275/55R18 tire size
A 275/55R18 tire is 29.91 in (759.7 mm) tall and 10.83 in (275.0 mm) wide, and turns 674 revolutions per mile.
- 29.91 inOverall diameter
- 5.95 inSidewall height
- 674Revolutions per mile
- 29.9x10.8R18Flotation equivalent
| Measurement | Inches | Millimeters |
|---|---|---|
| Overall diameter | 29.91 in | 759.7 mm |
| Section width | 10.83 in | 275.0 mm |
| Sidewall height | 5.95 in | 151.3 mm |
| Rim diameter | 18.00 in | 457.2 mm |
| Circumference | 93.96 in | 2,387 mm |
| Revolutions per mile | 674 | |
| Flotation equivalent | 29.9x10.8R18 (approx.) | |
275/55R18 is a 18-inch tire with a 275 mm (10.83 in) section width and a 55% aspect ratio, giving a 5.95-inch sidewall and a flotation-style size of about 29.9x10.8R18.
Its overall diameter is 29.91 inches, so it rolls 94.0 inches per revolution and turns about 674 times per mile.
73 other sizes in this list are within 3% of that diameter.
Compare 275/55R18 with plausible swaps
- 245/70R16 vs 275/55R18 (−1.36%)
- 235/75R16 vs 275/55R18 (−0.11%)
- 255/70R16 vs 275/55R18 (+0.49%)
- 265/60R17 vs 275/55R18 (−1.30%)
- 245/65R17 vs 275/55R18 (−1.24%)
- 235/70R17 vs 275/55R18 (+0.14%)
- 275/60R17 vs 275/55R18 (+0.28%)
- 255/65R17 vs 275/55R18 (+0.47%)
- 255/55R18 vs 275/55R18 (−2.90%)
- 245/60R18 vs 275/55R18 (−1.12%)
- 275/55R18 vs 235/65R18 (+0.39%)
- 275/55R18 vs 255/60R18 (+0.46%)
- 275/55R18 vs 275/60R18 (+3.62%)
- 275/55R18 vs 275/50R19 (−0.28%)
- 275/55R18 vs 255/55R19 (+0.45%)
- 275/55R18 vs 235/60R19 (+0.64%)
- 275/55R18 vs 245/50R20 (−0.88%)
- 275/55R18 vs 275/45R20 (−0.55%)
- 275/55R18 vs 255/50R20 (+0.43%)
- 275/55R18 vs 285/45R20 (+0.63%)
Sizes within 3% of 29.91 in diameter
- 235/75R16 29.88 in (−0.11%)
- 235/70R17 29.95 in (+0.14%)
- 285/35R22 29.85 in (−0.18%)
- 285/40R21 29.98 in (+0.22%)
- 275/60R17 29.99 in (+0.28%)
- 275/50R19 29.83 in (−0.28%)
- 30x9.50R15 30.00 in (+0.30%)
- 235/65R18 30.03 in (+0.39%)
- 255/40R22 30.03 in (+0.41%)
- 255/45R21 30.04 in (+0.42%)
- 255/50R20 30.04 in (+0.43%)
- 255/55R19 30.04 in (+0.45%)
- 255/60R18 30.05 in (+0.46%)
- 255/65R17 30.05 in (+0.47%)
- 255/70R16 30.06 in (+0.49%)
- 275/45R20 29.74 in (−0.55%)
- 285/45R20 30.10 in (+0.63%)
- 235/60R19 30.10 in (+0.64%)
- 245/45R21 29.68 in (−0.76%)
- 315/35R21 29.68 in (−0.76%)
- 275/40R21 29.66 in (−0.83%)
- 245/50R20 29.65 in (−0.88%)
- 235/55R20 30.18 in (+0.90%)
- 245/55R19 29.61 in (−1.00%)
- 265/70R15 29.61 in (−1.01%)
- 305/40R20 29.61 in (−1.01%)
- 245/60R18 29.57 in (−1.12%)
- 245/65R17 29.54 in (−1.24%)
- 225/75R17 30.29 in (+1.26%)
- 295/40R21 30.29 in (+1.28%)
- 265/60R17 29.52 in (−1.30%)
- 245/70R16 29.50 in (−1.36%)
- 265/40R22 30.35 in (+1.46%)
- 245/75R15 29.47 in (−1.47%)
- 315/30R22 29.44 in (−1.57%)
- 265/50R19 29.43 in (−1.59%)
- 215/85R16 30.39 in (+1.61%)
- 265/45R21 30.39 in (+1.61%)
- 305/35R22 30.41 in (+1.66%)
- 275/25R24 29.41 in (−1.66%)
- 265/45R20 29.39 in (−1.74%)
- 265/50R20 30.43 in (+1.75%)
- 295/45R20 30.45 in (+1.82%)
- 245/75R16 30.47 in (+1.87%)
- 265/40R21 29.35 in (−1.88%)
- 265/55R19 30.48 in (+1.90%)
- 235/45R21 29.33 in (−1.95%)
- 245/70R17 30.50 in (+1.99%)
- 265/35R22 29.30 in (−2.03%)
- 265/60R18 30.52 in (+2.04%)
- 295/40R20 29.29 in (−2.07%)
- 225/75R16 29.29 in (−2.08%)
- 245/65R18 30.54 in (+2.11%)
- 265/65R17 30.56 in (+2.19%)
- 265/70R16 30.61 in (+2.33%)
- 245/55R20 30.61 in (+2.34%)
- 235/55R19 29.18 in (−2.45%)
- 265/75R15 30.65 in (+2.47%)
- 275/40R22 30.66 in (+2.51%)
- 295/35R21 29.13 in (−2.61%)
- 235/60R18 29.10 in (−2.70%)
- 285/45R19 29.10 in (−2.71%)
- 285/30R24 30.73 in (+2.75%)
- 275/45R21 30.74 in (+2.79%)
- 255/70R15 29.06 in (−2.86%)
- 255/65R16 29.05 in (−2.87%)
- 255/60R17 29.05 in (−2.88%)
- 255/55R18 29.04 in (−2.90%)
- 255/50R19 29.04 in (−2.91%)
- 255/45R20 29.04 in (−2.92%)
- 255/40R21 29.03 in (−2.94%)
- 235/65R17 29.03 in (−2.95%)
- 255/35R22 29.03 in (−2.95%)
Open 275/55R18 in the tire size calculator
Source: Calculated from standard tire geometry formulas. Verified . How these numbers are calculated.