joshbrennan
+1y
wait i screwed that up.
a 7 inch wide wheel you will need at least +32, a 7.5 at least +40, an 8 at least +47.
personally for tire size i like a decent sidewall so for a 7" wide wheel i'd use a 205/40R18 and a 7.5 i'd use a 225/40R18, but its all up to you.