Wierd Marks Appearing On Tires
These vertical marks around the tire circumfrence stared to appear on the rear tires of my 2012 silverado 3500 SRW. I recently rotated my tires and front tires did not have these marks. Since rotating...
Forum Discussion
My guess is an over inflation indicator. With over inflation you can wear out the center line while still showing good thread remaining elsewhere. I bet if a gauge is used, the thread depth at the center will be small compared to the thread depth as you move outwards.
