Last year I ran the 205/55VR14 R3S04’s on my ITA MR2. My car is REALLY easy on tires (balanced, light, lots of camber), and after a full year of road racing, I probably have half the tread left on them. The tires never really overheat, and I only get about 5-8psi growth in them. I can fit 225’s, but I haven’t because I’ve been afraid I wouldn’t get them hot enough. My thought is this year to run the A3S04 in 225/50VR14’s this year. Is this a good idea? Will I melt them? Thoughts?
BTW, from tirerack’s site:
“The availability of both compounds also allows drivers to match their tread compound’s capabilities to the weight and horsepower of their vehicle, as well as to the track and temperature conditions in which they will be running. Heavy vehicles, high horsepower, demanding tracks and warm ambient temperatures will probably require the use of R3S04 tires while light vehicles, low horsepower, less stressful tracks and cooler ambient temperatures may allow the use of the A3S04 tires.”
BTW, from tirerack’s site:
“The availability of both compounds also allows drivers to match their tread compound’s capabilities to the weight and horsepower of their vehicle, as well as to the track and temperature conditions in which they will be running. Heavy vehicles, high horsepower, demanding tracks and warm ambient temperatures will probably require the use of R3S04 tires while light vehicles, low horsepower, less stressful tracks and cooler ambient temperatures may allow the use of the A3S04 tires.”
