225/45 R17 vs 225/40 R18 wheels
I want to put on my '95 E36 320i Coupe either 225/45 R17 or 225/40 R18 wheels with the same alloy rim and tire brands and model. Both sizes I like very much how look on E36, with a plus for 18 inch wheel. I know that only 225/45 R17 is a OEM size (see realoem.com). I want to know from your experience advantages and disadvantages for both wheel sizes, including fuel consumption, loading on engine and transmission, agility, steering response, etc. In theory I know how things work, but you know that in practise could be different!!!
Thank you E36 fans!