Gravel tire pressures tested!
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- čas přidán 3. 06. 2024
- I set out to determine what the best gravel tire pressure would be for my set up and the gravel I ride. So I started with the Zipp tire pressure calculator, determined the calculated optimal pressure, and adjusted up and down to see what effect if would have on my speed.
Watch for the results!
If you plan to buy one something I use, use my links below! It doesn't cost extra and helps the channel out.
Full bike specs:
3T Exploro Pro
Shift levers - SRAM Rival AXS (amzn.to/47s00OS)
Brake calipers - SRAM Rival AXS (amzn.to/47s00OS)
Crankset - SRAM Force 165mm - 48/35 (amzn.to/4aOimMY)
Front derailleur - SRAM Force AXS (amzn.to/48lgFFm)
Rear derailleur - SRAM Force AXS (amzn.to/48khRJ1)
Rear cassette - SRAM Rival AXS - 10-36 (amzn.to/3UyFysY)
Saddle - Selle Italia SLR Boost Kit Carbonio (amzn.to/48kgY39)
Wheelset - Zipp 303S (amzn.to/3ODKp8A)
Tires - Schwalbe G-One RS - 700x40c (amzn.to/3TNCTLy)
Handlebars - 3T Aeronova 38cm
Stem - Zipp Service Course SL 100mm -17 (amzn.to/3vw4Du0)
Bar tape - Fizik Terra
Video:
Editing: Macbook Pro M3 Pro (amzn.to/4aNhkAK)
Camera: Canon M6 Mark II (amzn.to/48F4iDI)
Lense: Sigma 16mm (amzn.to/41KDsIb)
Storage: G-Drive (amzn.to/3RQXT1g)
On the Bike:
Hammerhead Karoo 2
Polar OH1 optical HR monitor (amzn.to/3NTqUs2)
Kask Protone helmet (amzn.to/3RFuwPq)
Muc Off C3 dry chain lube (amzn.to/3TTaeor)
Look Keo Blade Carbon pedals (amzn.to/47oOvHZ)
Tailfin Top Tube Bag
Shoes - Fizik Powerstrap Gravel (amzn.to/3vrylk3)
#cycling #gravelbike #tirepressures
Chapters:
00:00 Intro
00:35 Tire pressure discussion
01:09 The test
02:26 Variables
02:56 The route
03:28 Controlling variables
04:31 Zipp calculator
06:35 Medium pressure
07:33 Low pressure
08:45 High pressure
09:55 Results
12:24 Final thoughts - Sport
Hello ! I am from Argentina ! And I recently bought my first gravel bike, I have a lot of experience racing track bikes, and I wanted to get into this modality. At the moment I love it! And I congratulate you for your video!!! And I thank you for the time and work! My conclusion is that what the page recommends is just the necessary measure to make it comfortable and fast.
Thanks for watching! Videos like this do take a lot of time and work but I enjoy doing it and hope they help others. I think prioritizing comfort is best for longer duration gravel rides and races.
The surface shown looked firm and packed in places is a thought. Great job good video
For sure it is mostly Hardpack with a few patches of loose gravel here and there. What boggles my mind is how the low pressures were faster than the mid pressures though if it being smoother was the case.
Thank you for the great report.
Thanks! Even though the results weren’t what I was expecting, knowing I shouldn’t stress too much about pressures helps. And, knowing I can run lower pressures without as much concern is also good for long distance races
Hello,
Thank you for your analysis.
My preference is more comfort rather than a a bit more speed, particularly on a longer and more enjoyable ride.
Cheers!
Thanks for watching! I’m usually the opposite. I’ll sacrifice a little comfort for more speed. But, this test has shown me that perhaps going a little lower on pressure isn’t costing me much speed and gaining a lot of comfort.
I've heard of a good way to test rolling resistance is to pick a hill to roll down and where you can come to a rolling stop on a flat. As long as you just let the brakes off to start from a marked position, don't pedal and keep the same body position, so the aero is the same, and you just have to mark where you finish rolling. Do this a few times to get an average. This removes any difference in power output.
That’s a good thought from a pure rolling resistance consideration. But, there are plenty of resources to get rolling resistance data. Rolling resistance and real world usage data don’t always correlate.
I think my fastest times have been when setting up the tires firmer although not as comfortable. I think it depends a lot on the terrain and the length of effort, short effort you can take more punishment longer effort you can less and so on. If I recall correctly the elite racers run pretty high pressures. With gravel seems to be many many variables.
In ideal conditions, I do think higher pressures will probably be faster. But like you said, there’s so many variables in gravel and you’re likely to see a lot of different terrain over a long gravel ride/race. Makes it really tough to figure out one specific pressure that’s best for all.
what would you normally before you did this test?
I would typically run what the Zipp tire pressure calculator said, although sometimes I’d go on the higher side of it due to the expectation that higher pressure were faster. Now I’ll definitely be running on the lower side due to comfort.
Try same pressures on single track
Good thought. Maybe I’ll try that. Which pressures do you think would be fastest on single track with a 40c tire?
@@JMCyclingVideos cyclocross pressures. Mid to high 20’s