Yesterday I went to the track and started with 28psi cold on MPS4S 305/30/19. After a session they were 32psi. Next session 32psi as well. Grip felt great.
On the way home at 65 mph I suddenly feel the car pulling left, then start to hop and I quickly stop on the shoulder. See photos of the tire.
I don't understand what happened. It is like the sidewalls were wearing from inside the tire until they were super thin and then completely ripped apart. Two part question:
1-What do you reckon likely caused that?
2-The remaining 3 tires have about 30% track life left. Would you replace just one, a pair, or all 4? I rotate after each track day but I reckon if I buy just one I could leave it on the front right corner (fastest wearing at my track) for the remainder of the set's life (about 4 days) and then replace all 4. WWYD?
Thanks!
*the last picture is one of the other 3 tires to give an idea of sidewall/tread outside wear. The inside sidewall/tread edge is better at 5/32nd.
On the way home at 65 mph I suddenly feel the car pulling left, then start to hop and I quickly stop on the shoulder. See photos of the tire.
I don't understand what happened. It is like the sidewalls were wearing from inside the tire until they were super thin and then completely ripped apart. Two part question:
1-What do you reckon likely caused that?
2-The remaining 3 tires have about 30% track life left. Would you replace just one, a pair, or all 4? I rotate after each track day but I reckon if I buy just one I could leave it on the front right corner (fastest wearing at my track) for the remainder of the set's life (about 4 days) and then replace all 4. WWYD?
Thanks!
*the last picture is one of the other 3 tires to give an idea of sidewall/tread outside wear. The inside sidewall/tread edge is better at 5/32nd.