My car came with 195/55/15.
My new wheels came with 225/50/16.
Not right at all.
Using the tire size calculator, it says 205/45/16 and 215/45/16 will both be almost perfect matches for my original overall diameter… I’d rather go with the 205s for clearance issues, but will that width fit a 7.5" wide wheel?
Tires are not constructed as exactingly as this, but a good rough guide might be:
205 mm is about 8.0 inches / about 0.25 inches of rubber per side of rim
215 mm is about 8.5 inches / about 0.5 inches of rubber per side of rim
225 mm is about 8.8 inches / about 0.65 inches of rubber per side of rim
If your wheel is backspaced inboard toward the suspension or tight to subframe when turning the steering, any of these might work.