I have this clutch on my mt82. Same deal. I called mcleod since they manufacture it for lethal. They told me the same thing. My 18 comes with a dual mass flywheel which helps muffle it. With the solid fly wheel it's like a big bell amplifying the gear rollover
I get the wheel to tire fitment and the recommendations. Ive worked at a dealership my entire life and have done more tire work than I care to think of lol. I am more asking if anyone has a S550 lowered 1 inch all the way around with 325/30r19 and 285/35r19 for clearance reasons.