Why you "need" 4 tires replaced on an AWD all wheel drive as a set rather than 1, 2, or 3
CollegeAutomotiveClasses
50K views - 4 years ago
CollegeAutomotiveClasses examines how unequal tire wear affects the all-wheel-drive system on a Subaru. The lesson covers the mechanical strain placed on front-to-rear and side-to-side differentials when circumference differences exceed safe tolerances.