How to chose offset and backspacing for your wheels
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- čas přidán 25. 06. 2024
- Choosing a wheel size can be difficult if you do not understand the measurements you need. I created this video to help you understand these terms and chose the appropriate rim size for your Jeep.
Below are the times each of the four major size topics start if you want to review or skip direct to each.
00:00 Introduction
01:44 Rim diameter
03:53 Rim Width
05:49 Rim Backspacing
08:36 Rim Offset
14:19 Conclusion and visuals
I am not suggesting that the size chosen in this video is the only size to run. Its just an example, and the principles apply regardless of your choice of brand, style or wheel design.
If you have any questions, please let me know in the comments down below, and I will get to them as quick as I can. If you need a deeper explanation on either of these major four topics, let me know.
This is the simplest way I could explain it. Hope it helps answer your questions!
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Safe Jeeping folks, and we will see you next time! - Jak na to + styl
Probably one of the best explanations I’ve heard and seen on this topic 👍
Thank you. 😀
Agreed
Agreed!!
His delivery and syntax is that of a kindergarten teacher explaining something to her students...
In other words, exactly what l needed!!❤💯💪
I'm 5 min in and I can tell this is the exact video I've been needing
You need to understand that although backspacing and offset are 2 different measurements they are completely intertwined. Change one and it changes the other. Offset is how much distance is between the centerline of the wheel and the hub mounting surface of the wheel. The backspacing is the distance from the back edge of the wheel and the hub mounting surface of the wheel.
So as long as the wheel width stays the same, if you change the backspacing it changes the offset.
Example: a 9" wide wheel with a 4.5" backspace will have a -12 offset. If you want it to have a positive or negative offset you have to change the backspacing.
This seems to be the first person here that understands this. This video says that they are different and not related when in fact that are directly related. One cannot change without affecting the other.
Strange that after decades in the industry he did not notice that offset = f(backspacing)
This is absolutely the most clear and understandable explanation of offset, and backspacing I've seen. Thanks for this info!
Outstanding explanation. So helpful to new jeep owner looking to do new tires and wheels.
EXCELLENT Information and explanation. Thank you.
Excellent video this is what I was looking for thank you for sharing your knowledge
Great video really helped me when going to look at wheels for my 2021 JL!
Excellent and easy to understand video. Thanks
Wow! Very clear explanation...thanks so much. By far the best I have found.
Outstanding! Straight to the point. Stayed on topic. Great visual explanations. This one I saved.
Great video. You help me a lot. Thanks from Quebec Canada
Thank you this is the best video on the subject I have seen
The best video on this topic on CZcams! Thank you sir!
Great video, Josh. Thank you.
Simply marvelous, you aced it.
Josh’s pace is so controlled and very easy to understand the knowledge! Such a great lecture! Thank you
Best video ever… Thank you! 🙏🏾
Your video was absolutely perfect! Been trying to figure out what i want to go with for our new Bronco. This was incredibly helpful!
Ditto with the previous comment. Awesome, explanation.
Thank you so much for this explanation and this channel! This has been so confusing to me and you explained it in a way I could actually understand.
OMG! Thank you so much! I have literally been racking my brain over this. One of the best explanations I have come across.
Great clear explanation.
Thanks I was having this problem I'm going with your set up..thanks again
Thank you!!! I m shopping for wheels and tires now after AEV lift installed to replace my stock wheels and tires. Your video is amazing!!!
Thank you! Thank you! Thank you! Just got a 2018 Wrangler JK 3 weeks ago and I knew from the photos of her that I wanted new rims asap. I actually gave up one week into my search. So many options and measurements I didn't understand. This video was so helpful. Thank you Josh.
Your video was easy to understand and follow. You made our purchase of wheels easy, thank you. We went with, Battle Born Sierra wheels.
Just got a 22 jl, this video helped me out a lot. 👍🏽
Glad to hear! 😀😃
Good morning to all of you. Cheers. I'm just smiling from ear to ear. Here's a Biggggg Hugggg. This what everyone has been looking for. Thank you so much. I just put the same setup on my truck just an r18 rim. It's a great comfort and enjoyment for the time you took to share with Everyone. Have a great day. Cheers.
Thanks for all that info
Clearly explained 👍🏼
Omg, thank you for helping a girl out!
Great info thank you !
Thanks, helped a lot.
Excellent explanation!
Thank you. 😀
Clearly outstanding!
Thank you 😊
That was awesome Thank You
Well explained brother
Thank you for this. I just subscribed😊
how did you make this so easy to understand? you earned a sub
Great video. Well done!
TY. Glad you appreciated it. 😀
Finally! find those numbers. Thanks, man.
Wheel: 17x9, 4.5 backspacing, -12 offset / Tire: 35x12.5
GO GO GO!!!!!
Thank you!
I need this video for 90's Tacomas...
Thank you.
Thank you
Thank you for this video. It was very helpful to me and helped me understand this topic. Please do a video on beadlock wheels. Pros and cons. Are they really needed?
Brilliant!
Great video Josh!! Finally someone knows how to explain properly. My only question I’m looking to same exact. My only concern does the -12mm offset put stress on the wheel bearings now that your pushing it out or with the 4 1//2 off set that compensates? Thank you. I’m looking to pick out rims in the next week or 2 great channel by the way!!! Subscribed here
Thanks
Thanks man .... 👌 👌
Yep
AWESOME
Great video it definitely helped. My question is what size tire do put on this for the look? I currently have the stock set so I have a 245/70R17 now and the new rim is the size you have. It’s a daily driver no lift I don’t want it to big or to wide just a good look that functions
I bought Mickey Thompson Classic 3 wheels. 35's on 17 x 9, 4.5" back space and -12 offset! I guess I got it right!
Amd I bet they look right on the Jeep too! 😉
I did not totally understand backspacing and offsets until watching your video. Job well done. Now that I can see the difference between a 0 and
-12, it's less than a 1/2 inch, which do I choose for a 22 Gladiator Overland. Thanks for your wheel education!
Outstanding video. Concise. Straightforward and without bias. I’m still torn between 17x9” or 17x 8.5”(does it matter??) wondering if a 315/70KO2 will stick out just enough on a Rubi if I go with 0 on the offset. Thanks!
Thank you! I would go 17x9 as later, if you wish to bigger on tires, you can use the same wheel. Be sure the back spacing is accurate for the tire size, and if it were me, I would chose a -6 offset or more for a nice mean look. 😉
Hey great video and thanks for the explanation, but I still don’t understand all that brewhaha. I currently have stock wheels and tires on a 2”lift with spacers so my wheels are even with my stock finders. I want to go to a 34” tire on a 17” wheel and get rid of the spacers and still have my wheels even with my finders. What rims size would I need to accomplish this?
Clear as mud.. if you change the offset, you change the backspace and vice versa. Just different units of measurement
That was awesomely explained. My dilemma is just that. But for wheels and tires for my Gladiator Sport S. Going with 33's and 17 inch rims. Now...offset?
I just bought a 2023 Gladiator Rubicon. I’m going to go with
35-11.50R17 Falken’s. I want to keep my new wheels as close to OEM offset.
Very helpful. Can you recommend the best place to purchase wheels and tires?
Depending upon where you are in this country, some of the best values I have found are either on discounttiredirect.com or wheelpros.com
I have a 2021 JLUR, 4 door Rubicon. I want to change my factory wheels with the 285/70R17 to a Method 703 wheel that measures 8.5x17 with 315/70R17 BFG K02 tires. The wheels are zero offset with 4.75" backspace. So far, so good, right?!! Now my question, do you think a small lift is going to be necessary for the occasional back country wheeling? No serious technical rock crawling. I've read some awful reviews of the Mopar 2" lift (which actually seems to lift about 3"-3.5"). My wife would have issues trying to get in and out easily if I go much more than the added lift from the 35" tires. Plus, I don't want to run into squabbles with my Mopar extended warranty. Help is appreciated with your experienced advice.
is that readymade mud fenders above the wheels?
Great video this made it easier for me to understand it better since I’m just learning on what all the terms mean. So if I was to get a 255/40R18 on the front with at least 3.5-4 backspacing & 275/40R18 on the rear with 4.5 backspacing. I should get a 18x8.5 in the front & 18x9 on the back right? I want my rear wheels to stick out bout how you have it in your video is that correct?
What kind of vehicle are we talking about? Just curious based on those tire sizes.
@@JeepingForBeginners it’s a 2007 crown Victoria police interceptor. Wanna make sure I understand you correctly.
Hey Josh. Great video! Just what I was looking for. One question--Does having a negative off set increase the likelihood of getting the dreaded death wobble?
The width of your rim, and or tire, has zero affect on the death wobble scenario. Though a wider track is more stable, the steering shake comes more from loose steering and suspension components then from tires... hope that helps. Thanks for the kind words! 😀
Hey thanks for that explanation. Just to clarify my goal was to find a tirewith 4.5 backspacing for my lift choice. It say it need it to clear the shocks mover. Now the wheel i was looking at is the aev they only come with a 5.77 backspacing so these rim will not work without out hitting my shocks.
True, and AEV has always tried to keep their products as close to stock as possible. But with 1.25" or larger wheel spacers, you can use the same wheels
True, and AEV has always tried to keep their products as close to stock as possible. But with 1.25" or larger wheel spacers, you can use the same wheels
@@JeepingForBeginners thanks the shock mount on the metal cloak are not needed 100%. They do say they are best so you can get the full affect of the flex or something like that. I will keep the spacer in mind.
Hey Josh, just discovered your channel and since you nicely asked for, I already subscribed... 😁 Obviously, I am on this video as I am a Jeep newbie and doing my own education and research before I decide what new, larger wheels/tires I will order. You explained the backspacing and offset great, most of it I digested, however I am a bit confused. In several places you mentioned the backspacing "we chose" as an example in this video is min 4.5" (that would automatically mean the 5" or 5.25" is still OK). If I am understanding correctly, should you be saying the backspacing should be a MAX of 4.5" (meaning 3.5" or 4" is OK)?
Thanks a million man... Cheers, Nash
In many cases, when selecting an aftermarket wheel, you can chose the needed back spacing. Rule of thumb, the wider the tire, the lower the nunber should be on the backspacing. Factory on a Jeep is close to about 6 inches. So it the tire you want to run is about 3 inches wider then stock, I would take half that number away from the back spacing and you get 4.5" if you keep it at 5.5 or 6, the tire will rub on the body or suspension components on the inside..... usually..... hope that helps. 🙏
@@JeepingForBeginners Thanks Josh, that is what I understood, so saying backspacing of min 4.5" in a video and down in comments is wrong then, and it should be said the backspacing of max 4.5"... That part got me confused, and I watched your entire video several times and even did that part few extra times, trying to figure out... 😁
jeep tj here. 4 inch lift with 4 inch flares. wanting to run 33x10.5 tires on 15 inch rims. i want my wheels to line up with my flares or a little out but not sucked in since the tires are narrow. what backspacing and offset would achieve that?
Can you run this set up on a factory lifted 2021 - JL?
what about 33" x 11"? 4.7 backspace and -6mm ok with no lift? on a 2017 Rubicon Recon
I need help...I want to run 37s on my wrangler on 17s. Was thinking 9.5 wide. But...do i need -12mm offset, or backspacing?
I have a 2021 wrangler unlimited rubicon JL which currently has 20x9 fuel assault rims on it 35” tire offset seems to be 1 they do poke a little I’m looking to go with 18” wheels should I stick with the 9” width and offset I’m lost think -12 would be okay and not stick out to much I am running stock suspension any info would help me thank you
I have a 1993 Chevy Silverado 1500 standard cab short bed 4x4
What would you recommend for a good stance on a 17” wheel?
Please give me tire size and wheel specs.
Thanks
HI bro wath do you think 15 wheels on 33x12.5 r15?
Hi Mr. Josh can you text me those exact sizes for the tires and the off sets when get chance I would totally appreciate it sir.
Good video but it would have been helpful to see what actually pushes the tire out of wheel well
soooo how do u set the backspacing??? doesn't a negative or positive offset affect the backspacing?
Factory height 2009 2 door Rubicón. I want to fit 33 15.5 15. Super swampers tsl sx Will It work
SO if you change the offset you will also be changing the back spacing
Excellent explanation! I have a follow up question. So a wheel that is 9 inches wide with 4.5 inch backspacing will always have -12 offset? Essentially adjusting one of these values (backspacing or offset) should uniformly adjust the other. Correct?
And that's has always been the confusion. But no. You can get that wheel, with that backspacing in three different offsets, 0mm, -6mm and -12mm.... some companies offer a fourth at -18mm...
It would make sense the offset would outweigh the BS... but it doesn't... they are two different measurements. Hence what I was trying to explain.
@@JeepingForBeginners Thanks for the response. I am having a hard time wraping my head around this. I am upgrading from factory to 35's and want to make sure I understand this right. So please bear with me.
Lets take your wheel for example; width (9") and back spacing (4.5'). Keeping both of these constant. Assume the offset for that wheel is 0 where in the hub sits perfectly at center line of the wheel and in direct contact with the mounting plate. Now if we want to change the offset such that the hub sits slightly inward of the wheel hence pushing the wheel out (a negative offset). Since the hub and the mounting plate are in direct contact wouldnt that pull the mounting plate closer to the lip of the wheel and reduce the back space measurement.
I hope I am not missing something rudimentary. Did watch the video twice!
Hi Nice video! Question i have 285/70 r17 can i fit a Wheel et-12 4.5 backspace jku 2014 without rub? Got another option et-14 4.45 backspace. Watch do you think will by better option? Thx
Both would look and handle about the same, 4.5 back space is a good fitment.... 👍
opinions on 17x9 wheel with 4.75 backspace and -6mm offset with 2 inch spacers for 37 inch tires?
Wheels are good, no need for the spacers.
Hey Josh. Super grateful for all your doing. I chatted a little with awhile back about shocks/springs.. now working to get to a rolling chasis for my 79 cj7 build. Im looking for just the sidewall bulges to peek out from under the oem flares. Heres what i have and my thoughts. With your experiencs i thought I'd ask.
2.5" BDS LIFT
NO OTHER suspension mods
15x8 wheels
32x11.5 tires
Which would give me the look described?
4"BS with -12mm offset
OR
3.75" BS with -19mm offset
??
The first choice would probably work, if you are looking for just a little outside the flare. A nice solid look for an 8" wheel, but the second option I think would look better....
@JeepingForBeginners the second option. Would put it further out another 1/4" ? Is that right?
Yes, I believe it would
@@JeepingForBeginners thank you so much for taking the time that you do. Grateful my friend. 🙏
Hey bud. One more question. If I change the AMC20 rear end from two axle to single and do a drum to disc conversion, does that change up the stance if I stick with 4"bs and -12 offset?
Ok hopefully your still in business I need help I have a 1 gen Touareg I have 5x130 20 inch 10 inch et45 275 50 20 and I want to put a negative offset 5x130 21 inches 12 inch some minus et so I can put 305 55 21 how will it affect my car can I drive will it rubb or not and most important my car is liftet with stock springs and 4 inch lift and also 40 and 50 mm speicers so can I can't I and will I crash ??
So how do you set the offset? Do you add that space to the backspace?
I still don't get it. The width of the wheel is fixed so if you change your offset that will move the mounting face, therefore changing the back space. If you change the backspace which is also measured to the mounting face that will change the offset. You can't change one without changing the other. Am I missing something?
Does a lift kit have an effect on the measurements you choose for the rim? Or that is just for tire size?
Some lift kits upgrade to larger sway bar links, which yes, would require a specific back spacing measurement. BUT, those kits will specify when that is needed
so is trying to do 17x9 -12mm on 37x13.50x17 out of the question? Would it work fine with 37x12.50x17? This is my dilemma. '22 JLUR
Appropriate backspacing and you will be fine. Min of 4.5" of back spacing will allow proper tire movement I'm sure
That was a very good explanation but for me it only clarified the back spacing for your specific tire and wheel setup. What if the wheel is wider than 9in? I’m still a little lost, someone help me out here.
When you start getting wider in rim size, the offset tends to change more. For example, on a 9" rim with 4" back spacing, you can see anywhere from a zero to -6 offset. Make it a 9.5" rim and same back spacing, now you can see up to a -18 offset, make it a 10" rim and you could see up to a -32..... keeping the back spacing the same, but growing the width, and the ratio for where the center of the tire to the hub changes.... which is why back spacing and Offset are NOT equal measurements.... though changing one or the other can affect each other....
Look, the wider the wheel over stock, the further it will stick out past the body.... easy way to look at it.
Hope that helps
What lift are you running on the rig in the video?\
At the time of this video, it was a 3.5" Rubicon Express lift.... those tires cleared fine with stock fenders with that lift as well. Which you can see in the video of our Hump 'N' Bump adventure as well.
I've changed it since however due to a more recent wheel and tire upgrade which we did for an adventure we took last month....
Hope that helps. 😀
hey got a question. what settings do you recommend for a rubican with 33inch tires and i want to go 17x9 rim. what backspace and offset do you recommend? i would like the tires to stick out around an inch past fender. i was thinking -6mm for offset but i have no idea about backspacing. thanks!
Like I said in the video, the back spacing is dependent on the tires desired width. Most 35s are 12.5 inches wide inflated, and average of 2 to 3 inches wider then stock. So after measuring your stock back spacing, (probably 5.5 to 6") then remove half the increased width of the tire (1 to1.5") you would set yourself an acceptable BS of between 4.5" and 3.75"..... in order to get this number exact, you need to pull a tape measure.
I use 3.75" of back spacing myself with a -32mm offset on my current wheels and they look badass personally. But it's up to you.
Hope that clarifies how to do that math to figure it out....
@@JeepingForBeginners thank you
hi
could you please tell me the size of the alloy. I'm planning to upgrade my jeep JL alloy and tire to 35/12.5/11/R17 so what rim size should I choose ?
I would use 17x9 with a minimum of 4.5" backspacing. Just like I explained in the video.
I’m going to run the rough country 2 1/2” suspension kit with coils. I’m looking to run 18 x 9 with 35” tires if I do a -12mm off set and 4 1/2” back spacing would that reduce the life of my wheel bearings?
The offset on the rims is not what is going to stress the Bearings. The weight of larger tires will.... regardless, over time, they will wear out... I run 37s now on a -38mm offset and jeeps runs out fine, but eventually...... make sense?
@@JeepingForBeginners thank you for the heads up
At 6:32 you measured the back spacing and it looked like 5" the tape was on 5.
Well explained! Very understandable..... However, say you prefer to keep your stock 18" wheels. Once again, any reason why I can not install a 305x70x18 or a 35x12.5x18? Your thoughts. Thanks
The tire will fit on the rim, but going that wide will rub on the control arms at full turn. If you use stock wheels, you can get wheel spacers to combat this. Though I don't recommend wheel spacers for the long haul, they do work. May be worth looking into.
hey I have a question I got a 2014 Jeep Sahara and I hit the brakes going around the curb and it started wobbling terrible I've heard of the death wobble but the front end is tight could that be caused by the antilock brakes? or have you experienced anything like this
A shake , or wobble like that is usually cause by a bushing or joint being loose. However, if every thing is tight, sometimes it's just the angle of approach, especially if the Jeep is not properly aligned. ABS can cause a weird pedal feeling if it activates, but not a shake in the front end... 🤔 be sure to check the ball joints, control arms and bushings, Trac bar and bushings, end links and the wheel bearing and hub assemblies. If anything has any movement at all... the death wobble can occur
@@JeepingForBeginners thanks brother yeah I've got an appointment to take it to a shop before that really scared me it was about 40 miles an hour
Just uploaded a new video that might be helpful with this very issue, if you haven't seen it already. 😉
@@JeepingForBeginners yes thank you I've already watched it haha I got it fixed it was the track bar
do you need back spacers if you choose the correct offset rim?
I never recommend spacers, so yes, with correct back spacing, you will not need spacers
@@JeepingForBeginners Why not? Spacers are a standard on jeeps
Would it be accurate to say a -12 offset will push the rim away from the frame 12mm (or almost 0.5 inch) and provide additional clearance for larger tires?
A -12mm offset will set the center force of the weight of the tire, 12mm outside the center hub of the rim. The back spacing itself is what allows for further frame clearance on larger tires
@@JeepingForBeginners So you are saying offset has no effect on the distance from the inside edge of the rim to the frame? Offset only affects where the center of the tire is in relation to the hub and backspacing is the only way to change the distance from the wheel to the frame? Trying to make sense of this in my head.
Back spacing is the measurement of the hub on the wheel, to the inner lip of the rim. Offset is the measurement of the center force of the tire in comparison to the center of the vehicle hub, a strong backspacing will lend to a strong offset, but they are two different measurements.... you can still have a positive offset, with a strong backspacing
Nice explainer!! Question. If you want the tire to pop out 2 inches from the fender what would the offset be?
What about only 1 inch?
Does negative offset ruin wheel bearings???
In a small amount, like 12mm? No, but using a 2.5" wheel spacer... yes...
@@JeepingForBeginners Thank you.
This was my question above thank you that was my concern ready to order!!!