With stock rims, here is spec info that Chevrolet printed in 1953.
With stock rims and stock suspension you have to allow from front axle movement (hitting a pot hole for example) when turning. If the tires are too tall or too wide, they could rub the fender(s).
"Adding CFM to a truck will only help at engine speeds you don't want to use." "I found there was nothing to gain beyond 400 CFM."
