Audi Tread Depth

…drive and all-wheel drive vehicles. Manufacturers Recommendations Audi As published in their vehicle owner's manual, "rolling radius of all four tires must remain the same" or within 4/32-inch of each other in remaining tread depth. Porsche Cayenne within 30% of the other tire on the same axle's…

…in pairs (rather than sets of four) due to a lack of maintenance or when equivalent tread wear can't be achieved through periodic tire rotation. While it can't make up for performance differences due to tread depth, it is most important to match new tires to those originally used on the vehicle when…