Charlie Guthrie wrote:
I felt that I was being held up on Saturday by my heat-cycled-out Toyo RA1's, so I swapped to 2+ year old Kumho's with one mismatched compound tire. The car seemed faster with the Kumhos, but I managed to cord two tires before the time trial. With so much sand stuck to the tires in the pits and with lots of tire worms on the tire, I had thought that the vibration was from the tire worms, but when I dusted off the tires before loading them in the trunk, I discovered that it's time to buy tires again.
Mike Whitney was right about the Toyo's, "you'll throw them away before you wear them out." There is still a hint of tread grooves on the tires, but they just dont seem to stick as well as they used to. In the tires defense, however, they have lasted almost twice as long as any tire I have run.
Charlie G
Charlie - I think you're mistaken about my comments. Hoosiers are the tires that get thrown away before they're worn out. Every set of Toyos I have used were absolutely fantastic right up until cord. They never, ever heat cycled out in my experience with 4 sets of tires on 2 cars. I'm really surprised at your experiences with them.
In summary for track use:
Heat cycle resistance: Toyo > Kumho V > Hoosier
Consistency: Toyo > Kumho V > Hoosier
New tire grip: Hoosier > Toyo > Kumho
Old tire grip: Toyo > Kumho V > Hoosier
Heat soak (fade) resistance: Toyo > Hoosier > Kumho V
Longevity (to cord): All close to the same
I don't think I will ever use anything but Toyo on track until something better comes out and is proven. I'll buy your "heat cycled out" tires if they're for sale

_________________
Mike Whitney
whit32@gmail.com, 919-454-5445
V10, V8, V8t, I6, I6, V6, F4t, I4, I4, I4, I4, I2, 1, 1