Originally Posted By: ctechbob
Wish I still had my autocross car and timing equipment, I'd be willing to test the idea. Treat both tires on one side of the car and not the other two. Run a lengthy skidpad test in one direction and then in the other controlling as many variables as possible. You should be able to find out very quickly the grip and wear difference.
Shouldn't need a lengthy test to show grip difference. You'd be able to pull more lateral G's in one direction than the other.
Wear it'd depend, if there is an effect, on the mechanism.
If its just a lubrication effect (so grip and wear were inversely related), then it might show up in short term testing, though if the stuff gets absorbed then the timing might be critical.
If, OTOH, its primarily UV/Ozone protective effect, then it might not show up on practical timescales.
I thought of trying this type of "endless corner" testing when I was doing the sunflower oil treatment, but never got around to it.
I did do some half-assed emergency stop testing after standing overnight post-treatment, just to make sure it hadn't become very dangerous, and if anything it seemed to stop a bit better.
Perhaps the rubber was softened and got a bit stickier. The tyres, IIRC, were about 8 years old so probably fairly hard.