All cars wheel fitment and tire size guide

Mercedes S-Class Coupe (C140) wheel sizes

Year	Wheel size	Offset	Bolt pattern	Tire size
Mercedes S-Class Coupe (C140) SEC/CL 420
1994	18x8.5	44	5x112	255/45R18
1995	18x8.5	44	5x112	255/45R18
1996	18x8.5	44	5x112	255/45R18
1997	18x8.5	44	5x112	255/45R18
1998	18x8.5	44	5x112	255/45R18
1999	18x8.5	44	5x112	255/45R18
Mercedes S-Class Coupe (C140) SEC/CL 500
1992	18x8.5	44	5x112	255/45R18
1992	18x8.5	44	5x112	275/40R18 rear
1993	18x8.5	44	5x112	255/45R18
1993	18x8.5	44	5x112	275/40R18 rear
1994	18x8.5	44	5x112	255/45R18
1994	18x8.5	44	5x112	275/40R18 rear
1995	18x8.5	44	5x112	255/45R18
1995	18x8.5	44	5x112	275/40R18 rear
1996	18x8.5	44	5x112	255/45R18
1996	18x8.5	44	5x112	275/40R18 rear
1997	18x8.5	44	5x112	255/45R18
1997	18x8.5	44	5x112	275/40R18 rear
1998	18x8.5	44	5x112	255/45R18
1998	18x8.5	44	5x112	275/40R18 rear
1999	18x8.5	44	5x112	255/45R18
1999	18x8.5	44	5x112	275/40R18 rear
Mercedes S-Class Coupe (C140) SEC/CL 600
1992	18x8.5	44	5x112	255/45R18
1992	18x8.5	44	5x112	275/40R18 rear
1993	18x8.5	44	5x112	255/45R18
1993	18x8.5	44	5x112	275/40R18 rear
1994	18x8.5	44	5x112	255/45R18
1994	18x8.5	44	5x112	275/40R18 rear
1995	18x8.5	44	5x112	255/45R18
1995	18x8.5	44	5x112	275/40R18 rear
1996	18x8.5	44	5x112	255/45R18
1996	18x8.5	44	5x112	275/40R18 rear
1997	18x8.5	44	5x112	255/45R18
1997	18x8.5	44	5x112	275/40R18 rear
1998	18x8.5	44	5x112	255/45R18
1998	18x8.5	44	5x112	275/40R18 rear
1999	18x8.5	44	5x112	255/45R18
1999	18x8.5	44	5x112	275/40R18 rear

Wheel size Mercedes S-Class Coupe (C140):
PCD 5x112 diametr 18, width 8.5J, offset 44. Similar to Mercedes CL-Class (C215) CL 500 2006

Tire size 18 to 18, width 255 to 275 and tire aspect 40 to 45.