Translating tire size

Yeah that was a typo lol so the fronts good. Just one size bigger in the rear because it meets the size of the tire I have. The tire itself is 4.60-s16
There are 25.4 mm to the inch. So converting from inches to mm is just multiply the inches by 25.4. As in 4.60 x 25.4 + 116.8 Use a 110 or 120 both will work.
Converting from mm to inches is just the opposite. Divide the mm by 25.4. As in 130 divided by 25.4 is 5.11, rounded of to 5.10.