I just bought a second handed 2010 E91 sports wagon in Hong Kong and I want to change the tyres and wheels. I’ve seen a lot of good pics online and I’ve also enquired with the shops about the rims and tyres. Most of the shops recommending me using 18x8J in the front with 225/40/18 while the rear using 18x9J 255/35/18. But I saw some local online comments saying the the setting will cause a running of fenders and will raise the fuel cost as well as making the car not as smooth as using 225/45/17 square. How do I choose? Anyone using my intended setting and got any rubbing problems?