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 ...
I was talking to a friend about the tires I want to purchase for my '70 LeMans Sport. This led to a heated discussion (and a bet) about tires and how their sizes are rated. My friend says a P235/50R15 ...
Traction equals performance and for traction you need rubber. The wider the better, but how wide is too wide? Since we don't all own tire and wheel shops, we can't randomly test-fit tire and wheel ...