COOKIES ON THE YOKOHAMA TIRE SITE
Paired tires should be of the same size designation, construction, and tread design and be as close as possible to same outside diameter. Mismatching duals forces the larger diameter tire to carry an overload, causing it to over-deflect and overheat. The smaller diameter tire, lacking proper road contact, wears faster and irregularly.
Note: Determine the actual difference in diameter by measuring the tires (with a steel tape) at least 24 hours after initial inflation. Matching should be done before installing tires on the vehicle. Applies only if tires are of the same tread.
Using the same tire size and construction that was specified as the original equipment for that vehicle will normally produce the best performance from the vehicle and the tires. However, there are times when mixing of different tire sizes and constructions on a vehicle is necessary. Some mixing of tires can be allowed if certain rules are followed: