ronsc1985

Did you have to change anything in the computer to account for the different tire diameter? I only ask because some people with C6Z06's had some problems when changing to larger diameter rear wheels. It thought the rear wheels had slowed down relative to the fronts and either brought up the anti lock system or some other warning which in essence said be careful your front wheels are sliding. There was much speculation about whether the engine power was being cut when the warning displayed.

The fix was to use some ECU hack program to reprogram the tire diameter.

threeMBs

ronsc, I've done that "trick" on many different MB cars. No issues. Also ran 1" taller diameter on Supra. No issues. The only "issue" was that my actual speed was a bit greater than my speedo was showing, which potentially may put one on a border line of getting a speeding ticket.

Dueclaws

You might enjoy this:
https://mbworld.org/forums/new-s-cla...ed-camaro.html
Might give you a rough idea of the potential of an E550 biturbo.

C63newdude

Well, the CLS comes with 285's in the rear and the coupe comes with 255. I test rode both and honestly both feels preety much the same despite the weight difference