Information from Tire Rack recommends 4/32nds is replacement time.
Originally Posted by Alpine300ZHP
Leslie...go to Pepboys and buy a 2 dollar tread depth guage. Check your depth in the middle of the tire (lowest point). If you are at 3/32nds or higher the tires
are fine. Below 2-3/32nds is replacement time. I cannot see how you need new rears when they were new and you only have put 3500 miles on them??? My 135i got 20k miles out of the rears and they were your typical BMW fare (Bridgestone RE050A run flats).
I live in the Pacific Northwest and we get lots of rain and I will not let my tires get below 4/32nds.
Before watching this video I was one of the guys who used a penny to check tread depth.
Last edited by Norm37; 05-28-2012 at 04:50 AM.