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Message: <blockquote data-quote="ReplicaR" data-source="post: 1509137" data-attributes="member: 9209">While the motor is out, and the car is down, I have been thinking about next improvements, and one thing that's been on my mind is the switch to 18 inch wheels. I've already bought the Saleen wheels in white, but those are street wheels (and occasional autoX), I wanted something wider and lighter for track. Enter Enkei RPF1, this time in 18x10.5 with 15mm offset. I've done the math on the fitment, and I knew that it would be possible to fit the wheels under stock fenders all around, if I could create more room on the back side. Switching from HyperCoil 450 lbs 10 inch spring to 450 lbs 8 inch spring allowed me to move the coilover perch 2 inches up, and that created a lot of room in the back, even allowing me to remove the 6mm wheel spacer that I was currently using with my 17x10 RPF1s. I am not worried about losing some bump travel, because I crunched the numbers based on measurements and dimensions from HyperCo, and I am only losing 1.1 inches of bump travel from static ride height (from 4.3 to 3.2 inches). At that compression, the wheel would be hitting bodywork, so I'm not worried about it. After everything is said and done, I will only have to worry about 5mm of extra clearance on the outside from the intended 295/30R18 tires. This will be a healthy step up of 20mm on all 4 corners. The tire in the pictures is a 315/30R18, which was slightly easier to find as a test fit part, and as you can see, I can kinda get away with using that tire as well, so I know I've got that in my back pocket at some point. I'm pretty excited about this, it literally worked out exactly as I thought it would, and I won't have to pony up money for wider front fenders or disrupt the clean lines of the car with those JDM fender flares.[ATTACH=full]20389[/ATTACH][ATTACH=full]20390[/ATTACH][ATTACH=full]20391[/ATTACH][ATTACH=full]20392[/ATTACH][ATTACH=full]20393[/ATTACH][ATTACH=full]20394[/ATTACH][ATTACH=full]20395[/ATTACH][ATTACH=full]20396[/ATTACH]</blockquote>