All cars wheel fitment and tire size guide

BMW 8-series (E31) wheel sizes

Year	Wheel size	Offset	Bolt pattern	Tire size
BMW 8-series (E31) 840 Ci
1990	17x8.0	20	5x120	245/40R17
	17x8.0	20	5x120	235/45R17
	17x8.0	20	5x120	255/40R17
1991	17x8.0	20	5x120	235/45R17
	17x8.0	20	5x120	255/40R17
	17x8.0	20	5x120	245/40R17
1992	17x8.0	20	5x120	235/45R17
	17x8.0	20	5x120	255/40R17
	17x8.0	20	5x120	245/40R17
1993	17x8.0	20	5x120	255/40R17
	17x8.0	20	5x120	245/40R17
	17x8.0	20	5x120	235/45R17
1994	17x8.0	20	5x120	235/45R17
	17x8.0	20	5x120	255/40R17
	17x8.0	20	5x120	245/40R17
1995	17x8.0	20	5x120	255/40R17
	17x8.0	20	5x120	245/40R17
	17x8.0	20	5x120	235/45R17
1996	17x8.0	20	5x120	235/45R17
	17x8.0	20	5x120	255/40R17
	17x8.0	20	5x120	245/40R17
1997	17x8.0	20	5x120	245/40R17
	17x8.0	20	5x120	235/45R17
	17x8.0	20	5x120	255/40R17
1998	17x8.0	20	5x120	235/45R17
	17x8.0	20	5x120	255/40R17
	17x8.0	20	5x120	245/40R17
1999	17x8.0	20	5x120	235/45R17
	17x8.0	20	5x120	255/40R17
	17x8.0	20	5x120	245/40R17
BMW 8-series (E31) 850i
1990	17x8.0	20	5x120	235/45R17
	17x8.0	20	5x120	255/40R17
	17x8.0	20	5x120	245/40R17
1991	17x8.0	20	5x120	245/40R17
	17x8.0	20	5x120	235/45R17
	17x8.0	20	5x120	255/40R17
1992	17x8.0	20	5x120	235/45R17
	17x8.0	20	5x120	255/40R17
	17x8.0	20	5x120	245/40R17
1993	17x8.0	20	5x120	235/45R17
	17x8.0	20	5x120	255/40R17
	17x8.0	20	5x120	245/40R17
1994	17x8.0	20	5x120	235/45R17
	17x8.0	20	5x120	255/40R17
	17x8.0	20	5x120	245/40R17
1995	17x8.0	20	5x120	235/45R17
	17x8.0	20	5x120	255/40R17
	17x8.0	20	5x120	245/40R17
1996	17x8.0	20	5x120	255/40R17
	17x8.0	20	5x120	245/40R17
	17x8.0	20	5x120	235/45R17
1997	17x8.0	20	5x120	235/45R17
	17x8.0	20	5x120	255/40R17
	17x8.0	20	5x120	245/40R17
1998	17x8.0	20	5x120	245/40R17
	17x8.0	20	5x120	235/45R17
	17x8.0	20	5x120	255/40R17
1999	17x8.0	20	5x120	235/45R17
	17x8.0	20	5x120	255/40R17
	17x8.0	20	5x120	245/40R17

Wheel size BMW 8-series (E31):
PCD 5x120 diametr 17, width 8J, offset 20. Similar to BMW 5(E61) 520D 2010

Tire size 17 to 17, width 235 to 255 and tire aspect 40 to 45.
Smallest tire size: 245/40R17, Largest: 235/45R17.