I recently bought a set of Toyo Open Country HT tires for my Tundra and noticed they looked small, regardless of the proper spec P275/65r18. Next to my father's base GM p/u with P255/75r17 Goodyears, they still looked smaller. Got out a measuring tape, the Toyos measure 210mm wide on the tread, and the Goodyears measure 220mm wide. Why are the Toyos narrower? And the fuel consumption is higher than the stock BFG Rugged Trail.