Can I fit 245/50 16" on the car? Am I limited to 225/50? You should be able to as some people run a 245-40/17. Check the S4/S6 registry to see what people are running. In fact there are factory tire pressure specs for this size on the fuel filler flap (at least on my 1993). S4 registry: http://www.win.net/~audvid/sreg/s4s6reg.html Frank-- '93 S4