Quote:
Originally Posted by racingfool
This seems to say otherwise.
|
How old do you reckon that is? For sure that plot is going to be different for every tire, and IMO it's not necessarily giving an accurate picture of grip vs. slip angle for current race tires vs. extreme perf street tires vs. "normal" street tires.
Most modern "Extreme Performance" tires have *amazing* grip at very high slip angles. This has been the case since at least the Dunlop Z1 *spec (I remember being dumbfounded at the sliding grip those tires had in the wet as I tried to do donuts in a parking lot).
Meanwhile the OEM Primacies are kinda known to not have this property. I had a student a couple of years ago who was afraid to even run "sport/track mode" at the track, let alone the 5-second hold on the traction control button, based on how many times he'd looped his car at a skidpad test day with the Primacies. But he soon found the proper Extreme Perf tires he'd gotten for the car to be *way* more confidence-inspiring and was able to drive hard enough (in sport/track mode) that I signed him off for his license after he showed great car control throughout the day (along with excellent awareness of traffic and flags and consistently good clear-headed responses under changing conditions).
Regarding noise, some tires make a lot of noise while still providing grip, some tires slide without making much noise at all, I haven't found an absolute correlation between noise and sliding grip.