235/45R18 tire size
A 235/45R18 tire is 26.33 in (668.7 mm) tall and 9.25 in (235.0 mm) wide, and turns 766 revolutions per mile.
- 26.33 inOverall diameter
- 4.16 inSidewall height
- 766Revolutions per mile
- 26.3x9.3R18Flotation equivalent
| Measurement | Inches | Millimeters |
|---|---|---|
| Overall diameter | 26.33 in | 668.7 mm |
| Section width | 9.25 in | 235.0 mm |
| Sidewall height | 4.16 in | 105.8 mm |
| Rim diameter | 18.00 in | 457.2 mm |
| Circumference | 82.71 in | 2,101 mm |
| Revolutions per mile | 766 | |
| Flotation equivalent | 26.3x9.3R18 (approx.) | |
235/45R18 is a 18-inch tire with a 235 mm (9.25 in) section width and a 45% aspect ratio, giving a 4.16-inch sidewall and a flotation-style size of about 26.3x9.3R18.
Its overall diameter is 26.33 inches, so it rolls 82.7 inches per revolution and turns about 766 times per mile.
67 other sizes in this list are within 3% of that diameter.
Compare 235/45R18 with plausible swaps
- 215/60R16 vs 235/45R18 (−0.64%)
- 205/65R16 vs 235/45R18 (+0.63%)
- 225/60R16 vs 235/45R18 (+1.15%)
- 235/50R17 vs 235/45R18 (−0.28%)
- 215/55R17 vs 235/45R18 (−0.06%)
- 235/40R18 vs 235/45R18 (−3.51%)
- 215/45R18 vs 235/45R18 (−2.69%)
- 225/45R18 vs 235/45R18 (−1.35%)
- 295/35R18 vs 235/45R18 (−0.75%)
- 235/45R18 vs 265/40R18 (+0.07%)
- 235/45R18 vs 215/50R18 (+0.52%)
- 235/45R18 vs 245/45R18 (+1.35%)
- 235/45R18 vs 255/45R18 (+2.69%)
- 235/45R18 vs 235/50R18 (+3.51%)
- 235/45R18 vs 305/30R19 (−0.46%)
- 235/45R18 vs 265/35R19 (−0.09%)
- 235/45R18 vs 235/40R19 (+0.28%)
- 235/45R18 vs 275/35R19 (+0.96%)
- 235/45R18 vs 255/30R20 (−1.15%)
- 235/45R18 vs 225/35R20 (−0.48%)
- 235/45R18 vs 265/30R20 (−0.25%)
- 235/45R18 vs 235/35R20 (+0.57%)
- 235/45R18 vs 275/30R20 (+0.64%)
Sizes within 3% of 26.33 in diameter
- 215/55R17 26.31 in (−0.06%)
- 265/40R18 26.35 in (+0.07%)
- 265/35R19 26.30 in (−0.09%)
- 205/70R15 26.30 in (−0.10%)
- 265/30R20 26.26 in (−0.25%)
- 225/70R14 26.40 in (+0.28%)
- 235/40R19 26.40 in (+0.28%)
- 235/50R17 26.25 in (−0.28%)
- 305/30R19 26.20 in (−0.46%)
- 225/35R20 26.20 in (−0.48%)
- 215/50R18 26.46 in (+0.52%)
- 235/35R20 26.48 in (+0.57%)
- 205/65R16 26.49 in (+0.63%)
- 275/30R20 26.50 in (+0.64%)
- 215/60R16 26.16 in (−0.64%)
- 225/65R15 26.52 in (+0.72%)
- 295/35R18 26.13 in (−0.75%)
- 205/75R14 26.11 in (−0.84%)
- 235/60R15 26.10 in (−0.85%)
- 225/40R19 26.09 in (−0.91%)
- 275/35R19 26.58 in (+0.96%)
- 255/45R17 26.04 in (−1.11%)
- 255/40R18 26.03 in (−1.12%)
- 255/35R19 26.03 in (−1.14%)
- 225/60R16 26.63 in (+1.15%)
- 255/30R20 26.02 in (−1.15%)
- 245/50R17 26.65 in (+1.21%)
- 215/65R15 26.00 in (−1.23%)
- 275/40R18 26.66 in (+1.27%)
- 225/45R18 25.97 in (−1.35%)
- 245/45R18 26.68 in (+1.35%)
- 295/30R19 25.97 in (−1.36%)
- 215/75R14 26.70 in (+1.41%)
- 245/40R19 26.72 in (+1.48%)
- 285/30R20 26.73 in (+1.54%)
- 225/55R17 26.74 in (+1.59%)
- 245/35R20 26.75 in (+1.62%)
- 205/55R17 25.88 in (−1.70%)
- 225/50R17 25.86 in (−1.78%)
- 285/35R18 25.85 in (−1.79%)
- 215/70R14 25.85 in (−1.81%)
- 215/70R15 26.85 in (+1.99%)
- 285/35R19 26.85 in (+2.00%)
- 225/50R18 26.86 in (+2.02%)
- 245/35R19 25.75 in (−2.18%)
- 195/70R15 25.75 in (−2.20%)
- 225/55R16 25.74 in (−2.21%)
- 285/30R19 25.73 in (−2.26%)
- 245/40R18 25.72 in (−2.32%)
- 295/30R20 26.97 in (+2.44%)
- 205/60R16 25.69 in (−2.44%)
- 225/45R19 26.97 in (+2.45%)
- 245/45R17 25.68 in (−2.45%)
- 285/40R18 26.98 in (+2.47%)
- 275/40R17 25.66 in (−2.53%)
- 27x8.50R14 27.00 in (+2.56%)
- 215/65R16 27.00 in (+2.57%)
- 225/60R15 25.63 in (−2.65%)
- 255/35R20 27.03 in (+2.66%)
- 255/40R19 27.03 in (+2.68%)
- 215/45R18 25.62 in (−2.69%)
- 255/45R18 27.04 in (+2.69%)
- 255/50R17 27.04 in (+2.71%)
- 275/35R18 25.58 in (−2.84%)
- 225/40R20 27.09 in (+2.89%)
- 235/60R16 27.10 in (+2.95%)
- 205/75R15 27.11 in (+2.96%)
Open 235/45R18 in the tire size calculator
Source: Calculated from standard tire geometry formulas. Verified . How these numbers are calculated.