BFGoodrich All Terrain T/A KO3 LT275/65R20 126/123S

Swapping a factory LT275/65R20 for anything taller changes speedometer readings, transmission shift points and ABS wheel-speed maths - which is exactly why this is one of the most requested replacement sizes on late-model three-quarter-ton trucks. Staying with the original dimension keeps all of that untouched while changing the tread to an all-terrain pattern.

126/123S covers 3,748 lb per tire in single fitment and 3,417 lb in dual, with a 112 mph limit. Rotation on a truck this heavy should not be deferred; uneven front-axle scrub is the usual cause of shoulder feathering long before the tread runs out. Available to order at Rev Auto Club.