TIRE SIZE SPECIFICATIONS GUIDE BY DIAMETER - 18" DIAMETER
| TIRE SIZE | WHEEL MIN | WHEEL MAX | DIAMETER | WIDTH | SIDEWALL |
| 205/35R18 | 7" | 8" | 23.6" | 8.1" | 2.8" |
| 205/40R18 | 7" | 8" | 24.5" | 8.1" | 3.2" |
| 205/45R18 | 7" | 8" | 25.3" | 8.1" | 3.6" |
| 205/55R18 | 5.5" | 7.5" | 26.9" | 8.1" | 4.4" |
| 215/35R18 | 7" | 8.5" | 23.9" | 8.5" | 3" |
| 215/40R18 | 7" | 8.5" | 24.8" | 8.5" | 3.4" |
| 215/45R18 | 7" | 8" | 25.6" | 8.5" | 3.8" |
| 215/50R18 | 6" | 7.5" | 26.5" | 8.5" | 4.2" |
| 215/55R18 | 6" | 7.5" | 27.3" | 8.5" | 4.7" |
| 215/60R18 | 6" | 7.5" | 28.2" | 8.5" | 5.1" |
| 225/35R18 | 7.5" | 9" | 24.2" | 8.9" | 3.1" |
| 225/40R18 | 7.5" | 9" | 25.1" | 8.9" | 3.5" |
| 225/45R18 | 7" | 8.5" | 26" | 8.9" | 4" |
| 225/50R18 | 6" | 8" | 26.9" | 8.9" | 4.4" |
| 225/55R18 | 6" | 8" | 27.7" | 8.9" | 4.9" |
| 225/60R18 | 6" | 8" | 28.6" | 8.9" | 5.3" |
| 225/65R18 | 6" | 8" | 29.5" | 8.9" | 5.8" |
| 235/35R18 | 8" | 9" | 24.5" | 9.3" | 3.2" |
| 235/40R18 | 8" | 9.5" | 25.4" | 9.3" | 3.7" |
| 235/45R18 | 7.5" | 9" | 26.3" | 9.3" | 4.2" |
| 235/50R18 | 6.5" | 8.5" | 27.3" | 9.3" | 4.6" |
| 235/55R18 | 6.5" | 8.5" | 28.2" | 9.3" | 5.1" |
| 235/60R18 | 6.5" | 8.5" | 29.1" | 9.3" | 5.6" |
| 235/65R18 | 6.5" | 8.5" | 30" | 9.3" | 6" |
| 235/70R18 | 6" | 8" | 31" | 9.3" | 6.5" |
| 245/35R18 | 8" | 9.5" | 24.8" | 9.6" | 3.4" |
| 245/40R18 | 8" | 9.5" | 25.7" | 9.6" | 3.9" |
| 245/45R18 | 7.5" | 9" | 26.7" | 9.6" | 4.3" |
| 245/50R18 | 7" | 8.5" | 27.6" | 9.6" | 4.8" |
| 245/55R18 | 7" | 8.5" | 28.6" | 9.6" | 5.3" |
| 245/60R18 | 7" | 8.5" | 29.6" | 9.6" | 5.8" |
| 245/65R18 | 7" | 8.5" | 30.5" | 9.6" | 6.3" |
| 245/75R18 | 7" | 8.5" | 32.5" | 9.6" | 7.2" |
| 255/30R18 | 8.5" | 9.5" | 24" | 10" | 3" |
| 255/35R18 | 8.5" | 10" | 25" | 10" | 3.5" |
| 255/40R18 | 8.5" | 10" | 26" | 10" | 4" |
| 255/45R18 | 8" | 9.5" | 27" | 10" | 4.5" |
| 255/50R18 | 7" | 9" | 28" | 10" | 5" |
| 255/55R18 | 7" | 9" | 29" | 10" | 5.5" |
| 255/60R18 | 7" | 9" | 30" | 10" | 6" |
| 255/65R18 | 7" | 9" | 31.1" | 10" | 6.5" |
| 255/70R18 | 6.5" | 8.5" | 32.1" | 10" | 7" |
| 265/35R18 | 9" | 10.5" | 25.3" | 10.4" | 3.7" |
| 265/40R18 | 9" | 10.5" | 26.3" | 10.4" | 4.2" |
| 265/45R18 | 8.5" | 10" | 27.4" | 10.4" | 4.7" |
| 265/60R18 | 7.5" | 9.5" | 30.5" | 10.4" | 6.3" |
| 265/65R18 | 7.5" | 9.5" | 31.6" | 10.4" | 6.8" |
| 265/70R18 | 7" | 9" | 32.6" | 10.4" | 7.3" |
| 275/35R18 | 9" | 11" | 25.6" | 10.8" | 3.8" |
| 275/40R18 | 9" | 11" | 26.7" | 10.8" | 4.3" |
| 275/45R18 | 8.5" | 10.5" | 27.7" | 10.8" | 4.9" |
| 275/55R18 | 7.5" | 9.5" | 29.9" | 10.8" | 6" |
| 275/60R18 | 7.5" | 9.5" | 31" | 10.8" | 6.5" |
| 275/65R18 | 7.5" | 9.5" | 32.1" | 10.8" | 7" |
| 275/70R18 | 7" | 9" | 33.2" | 10.8" | 7.6" |
| 285/30R18 | 9.5" | 10.5" | 24.7" | 11.2" | 3.4" |
| 285/35R18 | 9.5" | 11" | 25.9" | 11.2" | 3.9" |
| 285/40R18 | 9.5" | 11" | 27" | 11.2" | 4.5" |
| 285/45R18 | 9" | 10.5" | 28.1" | 11.2" | 5" |
| 285/55R18 | 8" | 9" | 30.3" | 11.2" | 6.2" |
| 285/60R18 | 8" | 10" | 31.5" | 11.2" | 6.7" |
| 285/65R18 | 8" | 10" | 32.6" | 11.2" | 7.3" |
| 285/70R18 | 7.5" | 9.5" | 33.7" | 11.2" | 7.9" |
| 285/75R18 | 7.5" | 9.5" | 34.8" | 11.2" | 8.4" |
| 295/30R18 | 10" | 11" | 25" | 11.6" | 3.5" |
| 295/35R18 | 10" | 11.5" | 26.1" | 11.6" | 4.1" |
| 295/40R18 | 10" | 11.5" | 27.3" | 11.6" | 4.6" |
| 295/45R18 | 9.5" | 11" | 28.5" | 11.6" | 5.2" |
| 295/65R18 | 8" | 10" | 33.1" | 11.6" | 7.5" |
| 295/70R18 | 7.5" | 10" | 34.3" | 11.6" | 8.1" |
| 305/30R18 | 10" | 11.5" | 25.2" | 12" | 3.6" |
| 305/35R18 | 10" | 12" | 26.4" | 12" | 4.2" |
| 305/40R18 | 10" | 12" | 27.6" | 12" | 4.8" |
| 305/45R18 | 10" | 12" | 28.8" | 12" | 5.4" |
| 305/60R18 | 8.5" | 11" | 32.4" | 12" | 7.2" |
| 305/65R18 | 8.5" | 11" | 33.6" | 12" | 7.8" |
| 305/70R18 | 8.5" | 10" | 34.8" | 12" | 8.4" |
| 315/30R18 | 10.5" | 11.5" | 25.4" | 12.4" | 3.7" |
| 315/35R18 | 10.5" | 11.5" | 26.7" | 12.4" | 4.3" |
| 315/40R18 | 10.5" | 11.5" | 27.9" | 12.4" | 5" |
| 315/70R18 | 8" | 11" | 35.4" | 12.4" | 8.7" |
| 325/60R18 | 9" | 12" | 33.4" | 12.8" | 7.7" |
| 325/65R18 | 9" | 12" | 34.6" | 12.8" | 8.3" |
| 335/30R18 | 11.5" | 12.5" | 25.9" | 13.2" | 4" |
| 33X11.50R18 | 8" | 10.5" | 33" | 11.5" | 7.5" |
| 33X12.50R18 | 8.5" | 11" | 33" | 12.5" | 7.5" |
| 345/35R18 | 11.5" | 12.5" | 27.5" | 13.6" | 4.8" |
| 34X12.50R18 | 8.5" | 11" | 34" | 12.5" | 8" |
| 35X11.50R18 | 8" | 10.5" | 35" | 11.5" | 8.5" |
| 35X12.50R18 | 8.5" | 11" | 35" | 12.5" | 8.5" |
| 37X11.50R18 | 8" | 10.5" | 37" | 11.5" | 9.5" |
| 37X12.50R18 | 8.5" | 11" | 37" | 12.5" | 9.5" |
| 37X13.50R18 | 8.5" | 11" | 37" | 13.5" | 9.5" |
| 38X13.50R18 | 8.5" | 11" | 38" | 13.5" | 10" |
| 38X15.50R18 | 11" | 13" | 38" | 15.5" | 10" |
| 40X15.50R18 | 11" | 13" | 40" | 15.5" | 11" |