For years, the 15-inch-diameter wheel was the standard for us 'wheelers. It didn't matter whether we were running 31-inch- or 44-inch-diameter tires on our rigs-most of us used 15-inch wheels. Five ...

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 ...