245/45R18 tire size
A 245/45R18 tire is 26.68 in (677.7 mm) tall and 9.65 in (245.0 mm) wide, and turns 756 revolutions per mile.
- 26.68 inOverall diameter
- 4.34 inSidewall height
- 756Revolutions per mile
- 26.7x9.6R18Flotation equivalent
| Measurement | Inches | Millimeters |
|---|---|---|
| Overall diameter | 26.68 in | 677.7 mm |
| Section width | 9.65 in | 245.0 mm |
| Sidewall height | 4.34 in | 110.3 mm |
| Rim diameter | 18.00 in | 457.2 mm |
| Circumference | 83.82 in | 2,129 mm |
| Revolutions per mile | 756 | |
| Flotation equivalent | 26.7x9.6R18 (approx.) | |
245/45R18 is a 18-inch tire with a 245 mm (9.65 in) section width and a 45% aspect ratio, giving a 4.34-inch sidewall and a flotation-style size of about 26.7x9.6R18.
Its overall diameter is 26.68 inches, so it rolls 83.8 inches per revolution and turns about 756 times per mile.
65 other sizes in this list are within 3% of that diameter.
Compare 245/45R18 with plausible swaps
- 205/65R16 vs 245/45R18 (−0.71%)
- 225/60R16 vs 245/45R18 (−0.19%)
- 245/50R17 vs 245/45R18 (−0.13%)
- 225/55R17 vs 245/45R18 (+0.24%)
- 245/40R18 vs 245/45R18 (−3.62%)
- 225/45R18 vs 245/45R18 (−2.66%)
- 235/45R18 vs 245/45R18 (−1.33%)
- 215/50R18 vs 245/45R18 (−0.81%)
- 275/40R18 vs 245/45R18 (−0.07%)
- 245/45R18 vs 225/50R18 (+0.66%)
- 245/45R18 vs 255/45R18 (+1.33%)
- 245/45R18 vs 265/45R18 (+2.66%)
- 245/45R18 vs 245/50R18 (+3.62%)
- 245/45R18 vs 275/35R19 (−0.38%)
- 245/45R18 vs 245/40R19 (+0.13%)
- 245/45R18 vs 285/35R19 (+0.65%)
- 245/45R18 vs 235/35R20 (−0.77%)
- 245/45R18 vs 275/30R20 (−0.69%)
- 245/45R18 vs 285/30R20 (+0.19%)
- 245/45R18 vs 245/35R20 (+0.27%)
- 245/45R18 vs 295/30R20 (+1.08%)
Sizes within 3% of 26.68 in diameter
- 215/75R14 26.70 in (+0.06%)
- 275/40R18 26.66 in (−0.07%)
- 245/40R19 26.72 in (+0.13%)
- 245/50R17 26.65 in (−0.13%)
- 285/30R20 26.73 in (+0.19%)
- 225/60R16 26.63 in (−0.19%)
- 225/55R17 26.74 in (+0.24%)
- 245/35R20 26.75 in (+0.27%)
- 275/35R19 26.58 in (−0.38%)
- 225/65R15 26.52 in (−0.62%)
- 215/70R15 26.85 in (+0.63%)
- 285/35R19 26.85 in (+0.65%)
- 225/50R18 26.86 in (+0.66%)
- 275/30R20 26.50 in (−0.69%)
- 205/65R16 26.49 in (−0.71%)
- 235/35R20 26.48 in (−0.77%)
- 215/50R18 26.46 in (−0.81%)
- 225/70R14 26.40 in (−1.05%)
- 235/40R19 26.40 in (−1.05%)
- 295/30R20 26.97 in (+1.08%)
- 225/45R19 26.97 in (+1.09%)
- 285/40R18 26.98 in (+1.11%)
- 27x8.50R14 27.00 in (+1.20%)
- 215/65R16 27.00 in (+1.21%)
- 265/40R18 26.35 in (−1.25%)
- 255/35R20 27.03 in (+1.30%)
- 255/40R19 27.03 in (+1.31%)
- 235/45R18 26.33 in (−1.33%)
- 255/45R18 27.04 in (+1.33%)
- 255/50R17 27.04 in (+1.34%)
- 215/55R17 26.31 in (−1.39%)
- 265/35R19 26.30 in (−1.42%)
- 205/70R15 26.30 in (−1.43%)
- 225/40R20 27.09 in (+1.52%)
- 235/60R16 27.10 in (+1.58%)
- 265/30R20 26.26 in (−1.58%)
- 205/75R15 27.11 in (+1.59%)
- 235/50R17 26.25 in (−1.61%)
- 295/35R19 27.13 in (+1.68%)
- 215/60R17 27.16 in (+1.79%)
- 305/30R19 26.20 in (−1.79%)
- 225/35R20 26.20 in (−1.80%)
- 235/55R17 27.18 in (+1.86%)
- 215/60R16 26.16 in (−1.96%)
- 295/35R18 26.13 in (−2.07%)
- 235/50R18 27.25 in (+2.14%)
- 205/75R14 26.11 in (−2.15%)
- 235/60R15 26.10 in (−2.17%)
- 225/40R19 26.09 in (−2.23%)
- 225/75R14 27.29 in (+2.27%)
- 295/40R18 27.29 in (+2.29%)
- 265/35R20 27.30 in (+2.33%)
- 215/55R18 27.31 in (+2.36%)
- 235/45R19 27.33 in (+2.42%)
- 255/45R17 26.04 in (−2.42%)
- 255/40R18 26.03 in (−2.43%)
- 255/35R19 26.03 in (−2.45%)
- 255/30R20 26.02 in (−2.46%)
- 265/40R19 27.35 in (+2.49%)
- 215/65R15 26.00 in (−2.54%)
- 225/45R18 25.97 in (−2.66%)
- 265/45R18 27.39 in (+2.66%)
- 295/30R19 25.97 in (−2.67%)
- 225/70R15 27.40 in (+2.70%)
- 305/35R19 27.41 in (+2.72%)
Open 245/45R18 in the tire size calculator
Source: Calculated from standard tire geometry formulas. Verified . How these numbers are calculated.