We've explained dozens of times over the years the difference between P-metric and imperial tire sizes so we won't cover a whole lot of the same ground, but we really haven't published a conversion ...

You’ll also find the recommended tire size, as well as the speed and load ratings for your vehicle, on a placard in the driver’s doorjamb, in the glove compartment, or on the fuel-filler door.

More often than not, the answer has less to do with the vehicle, and more to do with what the user’s intentions are with the rig. Sure, most rigs look badass on 40-inch-tall tires, but if all you do ...