Registered 2001 SLK320
Little help here; ran across a good deal on a staggered set CLS 550 wheels and tires. 18” with 275/35r front and 245/40r on rear. I’m not certain about this but the seller say they measure 7” deep from lug plate to inside lip of wheel. I know I need to keep the overall diameter of all four wheels within a certain circumference but I’m not sure exactly what that is. Has anyone moved up to such a size or would this be a problem for me? I already know what happens when the wrong size tires ore mounted so I don’t want that headache again. Thanks for any assistance anyone can offer!