BFGoodrich All Terrain T/A KO3 LT325/60R20 128S

Not every 20-inch truck fitment is a flotation size. LT325/60R20 is written in metric rather than the 35x12.50 style you see elsewhere, and it works out to roughly a 35-inch overall diameter with a 12.8-inch section width - which is why it turns up as an OE-adjacent upsize on modern half-tons that never left the metric convention.

The practical upside is that metric sizes tend to be easier on load index and easier to source in matching spare. This All-Terrain T/A KO3 is rated 128S, with the S speed symbol giving more highway headroom than the Q you find on most mud-terrains.

Available to order at Rev Auto Club. Sold individually.