I burn a new set of RRs in a weekend. 5 or 6 heat cycles max, after that, they aren't competitive. Usable for practice for heat cycles 7-10.
I burn a new set of RRs in a weekend. 5 or 6 heat cycles max, after that, they aren't competitive. Usable for practice for heat cycles 7-10.
There's an R888R out now. 100 treadwear at ~6/32" tread depth (RR is 4/32" RA is 8/32"). I wonder if a higher treadwear tire will be more consistent across heat cycles?
Toyo/Nitto have a bunch of tires with varying tread depths in the 100 treadwear range, R888R, R888, RA1, and NT01. There's also an RS1 full slick, however it's non-DOT.
https://www.toyotires.com/tires/competition-tires
- Josh
CMC #50
It probably depends on the load the tire sees. Mike's car with full aero likely puts significantly more load on the tires than a CMC car. A few degree temperature increase due to higher load per heat cycle might make them drop off much more dramatically, just a hypothesis. So when comparing across platforms it could be both. Tyler is seeing potential better life on the Miata.
I'm assuming the tires are 'curing' with heat cycles, (i.e. getting harder, would last longer rubberwise but have less grip). Does the length of the heat cycle matter? If you over cook a set by trying to pass Jerry for 10 laps can you use them up in one race by getting the tire temp to 250*F? If you don't get them up to 220* (max recommended temp) is it a partial cycle? Clearly, I don't understand tire design.
- Josh
CMC #50
It was the fast miata guys that introduced me to the phrase "no more than five to be in the top five", so my guess is once Tyler is at full song in a Miata he'll have the same experience.
I am getting comfortable with the notion that the thin to win RA1s weren't actually thin to win, rather that we were just slow.
Al Fernandez
James Proctor
http://www.jp-motorsports.com
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