Looking to order wheels for my clk 320 an would really like to go 20's. Alot of you guys run 19's but I like the tucked look of 20s when lowered . My question is...what size tire to run. My main concern is hitting the arm in the front. Any suggestions and or pics would be great.

 

Most questions can be answered if you use the advanced search function and select the w208 CLK section. here's the thread i found for you:
https://mbworld.org/forums/clk-class...20-wheels.html

 

Where do you live and what is the condition of your roads? Although I don't run 20s I have read enough to know that #1your car will ride rough because the normal or oem sidewall flex from regular tires will be gone. #2 one pot hole will end your rims life. You may like the look but you are asking for something (I would bet money) you won't like in the end. The only car with 20s that I like is Williams007. But he's done a lot of suspension work to make the car ride correctly and, the roads in Japan are in pretty good shape. Right Jimmy?