A OneHotLap reader sent us this picture and asked if we can help him diagnose the root cause of the tire chunking he's experiencing.
My 3 month-old Michelin PSS are busted after a weekend at Thunderhill. Probably because I don't have any camber right now in my stock BMW 135i. What do you think? 2 days, Saturday was 80 degrees, Sunday 77. 5 sessions per day, 20 min per session. Tires started chunking on day 1 and it got a lot worse on day 2 when the cords became visible.