OK so since most folks are saying the Raijin are too narrow, I want to make sure I'm doing my calculations correct! Sorry for the long post...
I currently have the OEM 18" Touring wheels on my roadster. They are:
- Front: 18x8 + 43 mm offset with 225/50R18 Bridgestone Potenza RE50A (48.0 lbs. total -> wheel 21.0 lbs + tire 27.0 lbs.)
- Rear: 18x9 + 15 mm offset with 245/45R18 RE50A (52.5 lbs. total -> wheel 24.5 lbs. + tire 28.0 lbs.)
I used a level to measure the gap from the tire lip to the fender at wheel center.
- Fronts sit 7/8 inch (22 mm) in from fender
- Rears sit 1/2 inch (12.7 mm) in from fender
I do not like the look of wheels/tires that stick out past the fenders. I do not plan to lower my car. I want to step up to 19" diameter wheels. I'd like to reduce total tire+wheel weight if possible, esp. rear.
So in searching for aftermarket wheels, I've been trying to get from the OEM (too far inboard) setup to closer to the fenders... maybe 5 mm in.
The Raijin 19" I was looking at:
- Front: 19x8.5 + 35 mm offset with 245/40R19 Michelin Pilot Super Sport (48.1 lbs. total -> wheel 23.1 lbs. + tire 25.0 lbs.)
- Rear: 19x9.5 + 15 mm offset with 275/35R19 Super Sport (49.0 lbs. total -> wheel 23.1 lbs. + tire 25.9 lbs.) A 3.5 lbs. savings!!
This is how I estimated fit to fender:
Protrusion Compared to OEM =(OEM Offset mm - Aftermarket Offset mm)+(((Aftermarket wheel Width Inches - OEM Width Inches)/2)*25.4)
Raijin Front = (43 - 35) + (((8.5 - 8)/2)*25.4) = 14.35 mm further out than OEM, so about 8 mm in from fender.
If I did the 19x9.5 + 35 in front = (45 - 35) + (((9.5 - 8)/2)*25.4) = 29.1 mm further out than OEM, so 7 mm outside of fender.
I think I did that right, but if not let me know!!