Thats the same size tyers I got on mine, 225/50/16, they seem alright for me for comfot TBH, I use to run 17 inch on one of my old E30's and low profile tyers and it use to pick up every bump in the road and the roads around my way are crap and we have a lot of speed humps so with the 17's there was no give, but with these 225's it aint bad speicaily with me with a bad back and getting old
I like a bit more comfat
but thats not saying if found some 18" M3 wheels going cheap it would'nt stop me from putting them on sod comfat then