DaRuzzian

About to order some Michelin PS4s tires. After reading several topics, the consensus I gather is
295/30/19

Is the best upgrade for stock rims on the
2016 c63s sedan

Some have said 305's work just fine, but some also said they had rubbing issues. So, I'm sticking with the 295s.

I havent seen as much consensus on the fronts. Is there any reason to increase the fronts and if so by how much?

My main concern is track speeds 120+ mph, if not keeping factory ratio would have any effect.

GordonGEICO

I don't think I would try to fit 295s or 305s on the stock 19" sedan wheels. The thing to keep in mind is most people that are going with 295+ are coupe owners, and the coupe wheels are 1.0" wider in the rear compared to the sedan.

Stock sedan:
Wheels 19-inch AMG® twin 5-spoke (8.5x19 front, 9.5x19 rear)
Tires 245/35R19 front, 265/35R19 rear, high-performance

Stock coupe:
Wheels 19-inch AMG® twin 5-spoke (9.0x19 front, 10.5x19 rear)
Tires 255/35R19 front, 285/30R19 rear, high-performance

drbeck13

So heres my question Looking on a e400 CAB with Air Suspension. Why would they fit this gorgeous cars with UGLY 18 inch wheels and ties? And can I replace both with 19 inch AMG rims? And get NON RF tires