I also have a question about tire size. I have stock rims/Fuchs with tires:
205/55R16 - I believe the rim to be 6.5 x 16
and
225/50R16 - I belive the rim to be 7 x 16
Is there a tire size that I should go with to give me a taller height which would lower my rpms at the same speed? How large can I comfortably go with these rims or is there a larger rim with certain tire size that will fit the narrow body 89 911 without any issues?
