max tire width on 20's
#3
Super Member
You can use a 275/25/20 is a smaller tire then what you are using, on a C63 people are using a 285/25 but i would go with a 275/25 that's what i'm using.
also what are your offets on the flowspec you have on the rear?
#4
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#9
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#10
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ET The offset of a vehicle's wheel is the distance between the centerline of the wheel and the plane of the hub-mounting surface of the wheel. It can thus be either positive or negative, and is typically measured in millimeters. Offset has a significant effect on many elements of a vehicle's suspension, including suspension geometry, clearance between the tire and suspension elements, the scrub radius of the steering system, and visually, the width of the wheel faces relative to the car's bodywork.
#12
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I have 20 x 9.5 with Pirelli P Zero Nero 285 25 20 on the rear. I get very slight rubbing going over dips if I have people in the back. No issues if I am in the car on my own which most of the time I am. It doesn't rub on the guard but on the rear stone guard that attaches to the rear bumper(not sure if the US car have it). My car is pretty low on coilovers