SoCal208

I got a set of Michelin Pilot AS3 245x45x17 on my 2012 E350 (luxury sedan, not Sport option). Now the question I have is : with my car (luxury sedan) with the above tires setup (square), can set of 18 inches 18x8.5 ET38 (square) will fit my car ?. What size of tires : 245x40x18 (or 245x45x18). I like this set (very good condition, 5 spokes AMG rims, only concern me is ET38, compare with ET48 in my car. 10mm offset different. Please advise.