Yup, but IMO considering the alloy rims generally available in the market, there is more likelihood of finding a 17x7.5" than a 16x7.5".
I'm running aftermarket 17x7.5" in my CL9 with 215/45R17. The 215/45R17 is the stock tire size for a Type S CL9 but the stock rim is 17x7". Now, purely on visual inspection, ideally I should have 225/45R17 with my 17x7.5" rims. Going by that definition, the poster should ideally go for 8" wide rims if he wants to run 235 tires - and again, there is more likelihood of finding a 17x8" rim in the market than a 16x8".