AtlanteanTitan

Changed the stock tires to Z rated 245/45R17 as well as the size setting on comand but the speedometer is still off by +3 mph which I believe is adding unnecessary miles to the odometer. Anything else that needs to be done that I do not know. Many thanks..........

BlownV8

At what speed is it reading 3 mph too high?

AtlanteanTitan

yes, i.e. instead of 50 mph it shows 53

BlownV8

When I looked up the stock size tire for the 2001 CL600, it is a 225/55/17. A 245/45/17 will throw off the speedometer by 4.14%. You should be running a 245/50/17 if you want to run a 245 width tire.

ItalianJoe1

A 600 came with 225 tires? Seems odd to have such a small tire on that car. My stock setup was 245/265 on my 03

BlownV8

Yes, a 225 was the standard tire on the 2001.

tusabes

Cars with the 18 inch rim package got 245/45/18 front and 265/40/18 rear
Cars with the amg appearance package got 245/45/18 front and 275/40/18 rear on wheels that were half an inch wider in the rear

But yes the standard base tire was puny 225

ItalianJoe1

I've had two amg package cl600s now and both had 265/40 rears. When was the 275 factory?

tusabes

My 2002 cl500 with amg appearance package specifies the 275 40 18
I don't know what other years used the 9.5 inch rear wheel, but amg used the 275 40 18 rear tire along with a 9.5 inch rear wheel for some years
http://www.alloywheelsdirect.net/inf.../mercedes-benz

BlownV8

+1