C8 Corvette STREET vs. TRACK alignment. Randy Pobst shows TRACK alignments MASSIVE improvement.
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- čas přidán 6. 09. 2024
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🏎 Randy Pobst takes the C8 Corvette out on the track in 2 different alignment settings and the results may surprise you.
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#HorsePowerObsessed #C8Corvette #C8VSC7 #C7Corvette #Corvette #ZR1 #Supercharged #CorvetteStingray #C8Understeer #Z51 #HPO #C8TrackAlignment
Randy Pobst takes the C8 Corvette out on the track in 2 different alignment settings. GM provided a C8 with a track alignment and another with a street alignment. He also tests both of them against a C7. 👍👍
All this talk yet not mention of times ,stock V's track setting suspension and also nothing mentioned about the rear suspension, so just imagine what could be achieved if you know for sure the real differences of various tracks and what suspension and gear ratios required to get the best result, based on factory HP, twin turbo and exhaust and tune it ,then you will see a true HP hero for the track? People with cash and engine and transmission specialists will make this car into a massive quick race car or even top speed, like the C8-R with twin turbo set up with around 800HP will do it transmission and differential made stronger to handle the torque and HP, you will have a beast for the track like nuremberg and break all track records for a production car, then people will flock to by the car, its out yet not one person has taken a stock C8-z51 package to the track and see what it does will it be just under 7. 05 minutes ?
Also for those who track the car, then have the alignment done for the track, but for those who drive the car as a everyday car, then don't do it, if people do not know the difference between track ready suspension and a every day car setting then they should not be allowed to even buy the car its that simple so many stupid car crashes that we see of real expensive cars especially the mustangs, due to its a track ready car and they show off on the street, race ready cars have a totaly different suspension set up yet idiots try to show how they drive on st roads and bang ? So funny to see it happen they spend 200K on a car and then have no idea what the hell the car can do, even experienced seasoned race car driver smash race cars due to lack of concentration and even the wrong tyers or lack of grip ? Now what i would like to know is what were the times between the differences in suspension, after all so many will be doing this with the C8/z51 package ?
@@7071t6 Beating the production track record for Nuremberg will be a tall order. The all time record was recently blown away by the Porsche GT2. The C8 ran a pretty quick time at the ThunderHill 2 mile but was only a few tenths faster than last years 911 Carrera. If it has been the S model the story would be reversed. Don't know about alignments though. They will be at the tracks soon so we will see how they do because I run a lot of track days and test days at ThunderHill Raceway.
You might want to learn the difference between understeer and oversteer. And 3 degrees of camber does not a tire shredder make especially when coupled with minimal toe in.
Now imagine the Z06 & Hyper ZR1 versions!? They will be mind blowing!
It's definitely something else! 👍👍
Glenn Rosulek I don’t think their making a grand sport
Amazing how a few degrees of camber can increase the contact patch enough to make a marked difference in the handling. Gotta love physics. Alternatively, like you said, it can also destroy a set of tires on the road. Good stuff!👍
Thanks, Scott. Definitely an interesting "fix" for this issue. We'll see what happens.
@@HorsePowerObsessed Think there are better 'fix's for less rubber destroying use.
If you’re driving the corvette on the weekends, it probably will help preserve your tires a bit.
The common owner of a C8 will never even understand what these guys at MotorTrend are talking about. The C8 owner will never use more than 30% of the cars performance on his way to meet for lunch and mainly keeps it parked in the garage, unused. What do I know I have only owned three Vettes now a C3, C4 and C7. haha
You're absolutely right. Not everyone tracks their car even if it is built for it.
Agree I have also had a c5,. c6 and currently the C7 all driven not just a garage queen.
@@jimsollmi3600 exactly, meant to be driven! 💯
Agree, that should be said for almost every corvette sold not just the C8.
Randy is the best driver. He's very gifted. One of the best runs I've seen from Randy is in the Dodge Viper ACR. I wanted to get one of those. I didn't have a 144 thousand dollars. 😂
Randy pushing that Viper ACR is a great video. The ACR is a serious track car.
Kim's comment at the 8:32 mark says it all, "this really is a terrific car." We can only imagine what the C8 will perform like in two or three years and beyond. I'm guessing the C8 may not even have the longevity of the C7 before the C9 comes out. We will be in places that no one has gone before. Save the Wave.🙋♂️
I thought that same thing when the C8 was first announced, Peter.
Just wait till the aftermarket gets ahold of the suspension and tweeks the geometry a Lil' bit....Oh boy!
Glowing words from expert like Randy shows C8 is a marvel. Hope it meets the heightened expectations when it hits the road next year.
Randy also drove a 2019 ZR1 and loved it. Front mid, vs. rear mid.
So whats the take away? If you mount the tires in an impossible C7 alignment and not suitable for the street, it handles better than a C7? And if you don't, it doesn't? Or, why do it? This MT video was a convoluted answer to a simple question, is the stock C8 better than the stock C7? Why do you need two versions of the same car in such a comparison, for the first time ever?
The more they delay this car and release videos like this, when production is clearly possible, the more it looks like there is a problem they are trying to solve.
Well, Motor Trend initially reviewed the car with the street alignment while using it on the track and noticed a lot of understeer so GM wanted to show them it can be "fixed" by giving them 2 versions of the car to test again. I don't really love the fix considering 3 degrees of camber is insane, but apparently it is a "fix" none the less.
If GM have managed to make the c8 slower - given the huge advantages of ME - that would be a triumph of sorts 🙄
I still have faith they can't screw that up.
@@tcroft2165
There is a huge marketing advantage of ME, and a perceived track advantage but that remains iffy so far with the tail heavy C8 vs perfectly balanced C7. As far as straight line speed, front engine accounts for 49 of the top 50 on Dragy's leaderboard. #48 is an aftermarket twin turbo Huracan.
@@135iN55 Track advantage is clear for anyone who does track work. FE is a compromise. Fine for the road but not so much otherwise. You can make a rigid FE car handle but you are fighting physics all the time
@@tcroft2165
I think the terms FE and ME need more definition. The C7 is FME, the C8 is RME. Neither engine config overlaps an axle. Audi is true FE and Porsche is true RE. I think a track advantage is clear with ME vs FE or RE, but FME vs RME is less clear. Every weight transfer argument hinges on braking vs accelerating comparisons, where the two configs swap. As far as straight line performance, Dragy has put 49 nails out of 50 in the RME argument, empirically speaking, RME and RE are not remotely competitive with FE or FME cars as proven by real world Dragy results.
Another issue besides weight distro and transfer is torque vs power. Engines in front have more space and geometry to generate torque, which is the only force generated by an engine. Rear mounted engines are usually smaller and compensate with high racing redlines to generate power (HP = torque x rpm). This works great when lifecycle is not a consideration beyond a finish line, but is exponentially devastating to a road car's business case.
I have -2.75 in the front and -1.8 camber in the rear. Tire wear not too bad. Over inflate the tires when not racing.
One thing I can't stand from MT is they're nitpicking the C8 but when they test a Tesla performance model they don't even talk about how their cars corner at all. This leaves the Tesla fanboys saying a performance model 3 will corner around a track like a Corvette because the battery pack is so low to the ground. Bullshit, there's no way a car that weighs over 4k lbs and the model S p100d weighs 5k lbs isn't going to push like a dump truck in the corners. Not to mention the Tesla's are only good for a few laps before they need a charge because the lap times fall off so badly after the pack gets below 60%. They also don't talk about what tires look like after a few laps of a 4-5k lb car tortures them in corners.
The Model S drops off, because the pack overheats. The cooling in the Model 3 is better. You can tell with the charging rate of 250kw on a V3 super with a smaller pack. The upcoming plaid S, and especially the Roadster 2 should do well on a track.
@@fjalics all pretty common knowledge to those of us following performance cars and Tesla, model 3 is definitely an improvement but its lap times still drop off after the battery pack gets below a certain percentage. Where as an ICE vehicle will perform the same on a full tank of fuel compared to a near empty tank and once empty can be refueled in a few minutes. Even with supercharging you're looking at 20 minutes and if you want a full charge for best lap times and longer amount of time before another recharge it will be over a half hour. By then the ICE car will have put the EV several laps behind.
@ Which model, S or 3? The 3 has better cooling. When they limp, it's because the batteries overheat.
The S is not a track car. It's a luxury car, though the ludicrous one accelerates like a bat out of hell. It's batteries overheat if you run laps with it. The Model 3 performance has better cooling. I've seen videos of guys that track them, and they are plenty fast, but they did put coilovers on them, and wider sticky tires. There is a Plaid S coming. My assumption is that they will redo the pack. That 3 motor setup is going to be stupid fast. They have been playing with it at the Nurenbergring.
I'm not throwing a parade or jumping to conclusions until they eliminate all the variables in testing. Thats really the only way to know if the C8 is truly superior on the track. Give me C8 and a C7 on track alignment, with the same tires and a professional driver. I think that's a fair request.
Definitely agree.
C8 looking fire asf
🔥🔥🔥
GM Corvette "wants" independent expert feedback - why - they desire to leverage "all" talent, especially those who love Corvettes. C8 will evolve, don't wait for C8 + three years if you are ready to buy - remember, my C7 Z06 is the shoulders that Bowing Green and the GM Brand will not take all learnings, they will not become a "Marketing" company - Corvette means "improvement" - "competition" - means bringing in YOUNG ENTHUSIAST'S - you cannot live on yesterday, but you will always live on taking feedback - Corvette is not only a Brand - IT IS A PROMISE.
+HorsePower Obsessed - and Mr. Randy Pobst and Kim Reynolds, thank you for this awesome vlog on the C8. I can barely wait for the C8 future lineups. Again, thanks! ~ BG
You're quite welcome! Thank you for watching.
I feel a lot of disappointment from this review, the C8 its a great car, the problem is, it was oversold compered with a lot more expensive cars which are tuned for decades. Its not there yet and Corvette should have known better how to advertise.
So I will need to adjust camber 3degrees and basicaly buy a new set of tires on a regular basis if I want to track this car. The answer to that is to not race it to prove the engineers knew what they were doing. These two testers for MT proved it for what purpose? Most owners do not race their cars and would never set the camber 3 degrees.
Agreed. It's information very few will need but it's still interesting to know you can lessen the issue if needed.
Sounds like the C8 could use more front tire. How about 265s? Or maybe 18" wheels? And Cup2 tires...
GM is likely keeping this idea for the Z06/ZR1.
Just put 265 in the front (or 275 if you want to keep the rolling diameter closer to stock) and the problem goes away. You can also fit wider tires in the back without any concern. The fenders are extremely wide on this car.
Great content, funny thing is that your post is 3 hours after another post on the same topic. And you guys say the exact same thing. Maybe you both are collaborating in order to get us up to date. Thank you for the update.
Thank you! I didn't collaborate with anybody for this video, who are you referring to?
If you car guy. You know Randy give true opinion on C8 Corvette
My nickels worth of opinion due to inflation. Social media is great. Think of the big picture. .05% or less will take their car to the track ever and most of those only a couple of times. It's hard to build the perfect track car that's really made for the street. Having tracks accessible to the public is really a new thing. I've been once. I would go more but it's 2,5 hours away and it's a little expensive. And most of the very few who will track their C8 will not push it no where near what Randy the Savage can push it. Even Mike SP717 doesn't track much. Mostly street racing so over or under steer is not an issue for the majority. FYI I went see Ford vs Ferrari yesterday. Awesome movie.
Instead of doing so much camber could've just gone with more tire width up front and out back (maybe holding back for z06 or zr1 ?🤔). Or even adjusted springs and shocks. So many ways they can change behavior of the car.
Agreed. Wider tires are definitely coming later.
I've seen people fitting 265-275 in the front while keeping the rear unchanged, and they reported dramatic improvement both subjectively and objectively. GM simply didn't put enough rubber in the front and it's a really easy problem to solve. A lot easier to deal with than C7 Z06's constant cooling problems.
Maybe they will come out with an active camber system. That would be awesome.
That would be awesome!
The C7 ZR1 set the production car track record (2:37.25) on this course on a day when Ford was there testing the Ford GT. However, GM claimed they weren’t trying to set a record, it just worked out that way. :D Here's the video: czcams.com/video/j7j1gCM6-5M/video.html
I remember that quite well! I loved every second of it!
Great vídeo! It would be awesome to get the lap times too! Also, As design is concerned I think the C8 needs bigger wheels at least at the rear. When you see the lateral view of the car, it looks longer and leaner than the old one, not the muscular look we are used to these days. So the bigger wheels may help with that! The future looks bright for the Corvette!👍🏻
Thank you. I agree, bigger/different styled wheels will definitely help the look.
He drove a C7 without the track alignment.
Did you happen to read the article that Hennessy released saying they would be making a wide body kit and a 1500 horsepower engine kit for the base model C8?...... I can't wait to see what that looks like
I did see that. Pretty crazy for sure.
Believe the C7 Z06 has a 2+ deg negative off the floor when in Z07 set-up...
So what you are saying if you don't get this alignment it is no balance
Needs a functional rear wing...
it was understeer that was the concern which the track setup fixes but eats tires.
Now I want a c8 even more
Agreed! 👍👍
At 7:30 Randy asks a very good question that is never answered.
That's the same question I have. Especially since in the beginning he notes that you can visually SEE the camber... If it's that bad, it's an issue.
Agreed
I'll answer Randy's question:
C7 Stingray, 3298 lbs.
C8 Stingray, 3660 lbs.
Same power to weight, but the extra weight has to turn. GM knows the answer, thats why they provided a 3500 lb C7 Grand Sport and not a 3300 lb C7 Stingray for comparison.
@@135iN55 but that was a Stingray...
Did they show any lap times for VIR?
No. I don't think they were there for an official time.
@@HorsePowerObsessed would like to hear some unofficial times though, give us a ballpark to work with
As soon as I hear something, I'll let you know.
@@waltermiller249 Grattan Raceway was 1s in the reviews.
@ 1s gap.
over steer is when your rear end steps out understeer is when your front end goes straight when you should be turning.
Lags about 2 seconds per minute behind the C7 ZR-1 on this course. Stretching things here (comparing apples an oranges) a 7 minute lap (aka Nurburgring) 7:10 to 7:18.19
I'm guessing 7:18.19
That's the popular guess right now. I hope GM gives us some solid track numbers soon!
@@HorsePowerObsessed . GM said the C8 exceeded their expectations at the Nurburgring so I'm sure we'll finally actually get a Nurburgring lap time!!! FINALLY!!
I hope so! It took forever to finally hear the C7 Nurburgring numbers.
Interesting the MT reported understeer. I read the article but don't remember if they disclosed it was only on the figure 8. Can't say I've ever driven a car around a figure 8, therefore I don't give 2 shits what the car does on a figure 8. Seems like a really stupid item to nitpick in a situation that only auto testers will ever encounter.
Wow how things change from understeer to oversteer at high speeds in the street alignment. Nobody talked about oversteer in the previous reviews.
Agreed. It's the first I've heard of it as well.
Also said that understeer is more prevalent at slow speeds.
@@jeremywinslow7345 Yeah but its seems that the understeer did not upset Randy
@@ivanviera4773 he also said that when he tests a car he only looks for things he thinks are in need of improvement.
He basically said the faster you go the better it drives which is counter intuitive.
Torque steering is what they are experiencing. It's quite a weird feeling to keep the steering wheel in one position and use the gas pedal to change oversteer and understeer. Happens all the time in my mid engine
Randy said it wanted to WHEELIE COMING OF CORNERS. This thing is simply off the charts with potential for more performance. If Callaway supercharges this thing it will be unreal. The non z51 non mag ride version could be made super track ready with a aftermarket suspesion pack. The car continues to be amazing at the price.
100% agree!
I wonder by the time the C8 hits the showroom, If there will be any new manual C7 in any dealership? and at what price (or discount) can I get one?
I remember when C7 hit the showroom, a friend bought a C6 at great price.
I don't like to buy used performance cats. You never know what has been done to her... She may look good on the outside, but what about the inside. :-)
I've seen a few used car dealerships trying to snatch up the manual C7's because of the value increase being a real possibility.
@@HorsePowerObsessed
Good point. The manual value on C7 will go up. Because that's the last ,manual Corvette.
That seems to be the consensus. We'll see.
9k atm on discounts last time i looked.
Maybe GM should factor Randy to help with handling calibration from the onset.
Probably not a bad idea.
Needs a spoiler like a lip style like the old iroc z camaros had instead of that ugly spoiler.
3 degrees of negative camber at which axle?
both
Still keeping my c6zr1 with 750hp
Good video!!!🎬🎥🎤🏁🏁🏁👍🏾👍🏾👍🏾👍🏾
Thank you, my friend!
Interesting info as always!
Thanks, man! 👍👍
Think steep camber will chew up tires on a street car? Try getting significantly less laps that your competitors on a track and having to pit more often. Nobody will want to race this car. This is not the solution to understeer and GM is hiding the solution. IDK why the clowns at MT are falling for it.
There's plenty of room between the tire and the fenders. Put wider tires on the stock rims. Problem solved. Why is this so hard for expert car testers to understand and test? Or is GM deliberately hiding this solution on the stock car so they can show that it's fixed on a wider Z06?
I added 30mm of width on the front end and the understeer went away completely, like it never existed. The steering lightness went away as well. It felt like a video game with pucker factor cornering on stock tires. C'mon MT!
All valid points. I debate on whether or not to even put videos out when MT is the source because of this kind of stuff. It really seems iffy to me that these "professionals" don't seem to get it.
@Dale Walker yep. Stock camber at just under negative 1 degrees will eat up the shoulder of your tires. I run -2.2 and -2 front /rear on my z51 and it makes a very noticeable improvement in lap times. -3 degrees is what a lot of the 911 guys run. Even a few of the C6 guys have gotten to -3. This MT test doesn't strike me as too extreme.
Lime the Alfa 4c then. Alignment makes a difference.
Without lap times its all objective.
Great Except I run my 19 ZO6, Which cost me new, a lot less than the C8 stingray, and I am quicker on the track, on Michelin PSS.
Great video 👍
Thank you! 😁👍
YA YA when do we get to see the footage?!?
There was a good bit of footage in the video...
"The C8 handles and puts down the power better then the C7''
It freaking better...that was the whole point in building mid engine...and that is saying a shit ton as the C7 is very good for what it is....front engine RWD....probably one of..if not the most refined front engine RWD chassis with the most refined technically advanced OHV engine on the planet.
As for having 2 different alignment settings...or infinitely adjustable...the cars come from the factory set up for how 99% of them will be driven....
You want to track the car...you can play with and adjust everything.
When he said 80-100 MPH, I heard 8200 MPH.
" What it should have been all along " C5 / C6 winning Lemans over mid engines for decades says Hi. Nice try old man..
@N. Bentley I believe he was talking mid engines because that was the original plan for Corvettes. Im saying they beat mid engines for decades. So he shouldnt discredit them for being front engine. The Ferraris, Aston Martins all have front engine street cars. Are you saying c5, c6, c7 street cars dont compare to the c8 because its mid engine??
D Vette What is the C8R destroys the competition this weekend ? Things that make you go hmm 🤔 lol.
The typical Joe complained about under steer and will most likely get it wrong and crash the car.
Where does a 2:01.8 lap rank on this course?
4 seconds slower than the C7 ZR1.
@@HorsePowerObsessed .ty
You're welcome!
Did I misunderstand?? I just watch a vid with terminology that I don't have a great understanding of. But I do want to comment on a comment at 8:47 "this is what it should have been all along" ! Really! 2019, C7, can be purchased, new, for $48K. Now with Chevy's latest rendition, he says "this is what it should have been all along". From when? At the $30K price point, 40K? Did I misunderstand his comment? How many 2018 cars out performs a 2018 corvette, dollar for dollar?
+
If Dodge can make big power why can't Chevy?
They can, have, and will continue to. This is the Stingray (base) engine.
Maybe you should just say screw it all and trade your ZR for a Shelby??? 🙄🤟😎
Lol no way!