215/55R18 tire size
A 215/55R18 tire is 27.31 in (693.7 mm) tall and 8.46 in (215.0 mm) wide, and turns 738 revolutions per mile.
- 27.31 inOverall diameter
- 4.66 inSidewall height
- 738Revolutions per mile
- 27.3x8.5R18Flotation equivalent
| Measurement | Inches | Millimeters |
|---|---|---|
| Overall diameter | 27.31 in | 693.7 mm |
| Section width | 8.46 in | 215.0 mm |
| Sidewall height | 4.66 in | 118.3 mm |
| Rim diameter | 18.00 in | 457.2 mm |
| Circumference | 85.80 in | 2,179 mm |
| Revolutions per mile | 738 | |
| Flotation equivalent | 27.3x8.5R18 (approx.) | |
215/55R18 is a 18-inch tire with a 215 mm (8.46 in) section width and a 55% aspect ratio, giving a 4.66-inch sidewall and a flotation-style size of about 27.3x8.5R18.
Its overall diameter is 27.31 inches, so it rolls 85.8 inches per revolution and turns about 738 times per mile.
73 other sizes in this list are within 3% of that diameter.
Compare 215/55R18 with plausible swaps
- 235/60R16 vs 215/55R18 (−0.76%)
- 225/65R16 vs 215/55R18 (+0.75%)
- 245/60R16 vs 215/55R18 (+0.97%)
- 215/60R17 vs 215/55R18 (−0.56%)
- 235/55R17 vs 215/55R18 (−0.49%)
- 215/50R18 vs 215/55R18 (−3.10%)
- 235/50R18 vs 215/55R18 (−0.22%)
- 295/40R18 vs 215/55R18 (−0.07%)
- 215/55R18 vs 265/45R18 (+0.29%)
- 215/55R18 vs 225/55R18 (+1.59%)
- 215/55R18 vs 235/55R18 (+3.17%)
- 215/55R18 vs 295/35R19 (−0.66%)
- 215/55R18 vs 235/45R19 (+0.06%)
- 215/55R18 vs 265/40R19 (+0.13%)
- 215/55R18 vs 305/35R19 (+0.35%)
- 215/55R18 vs 255/35R20 (−1.04%)
- 215/55R18 vs 225/40R20 (−0.82%)
- 215/55R18 vs 265/35R20 (−0.03%)
Sizes within 3% of 27.31 in diameter
- 265/35R20 27.30 in (−0.03%)
- 235/45R19 27.33 in (+0.06%)
- 295/40R18 27.29 in (−0.07%)
- 225/75R14 27.29 in (−0.09%)
- 265/40R19 27.35 in (+0.13%)
- 235/50R18 27.25 in (−0.22%)
- 265/45R18 27.39 in (+0.29%)
- 225/70R15 27.40 in (+0.33%)
- 305/35R19 27.41 in (+0.35%)
- 235/55R17 27.18 in (−0.49%)
- 215/60R17 27.16 in (−0.56%)
- 295/35R19 27.13 in (−0.66%)
- 275/30R21 27.50 in (+0.68%)
- 225/65R16 27.52 in (+0.75%)
- 205/75R15 27.11 in (−0.75%)
- 235/60R16 27.10 in (−0.76%)
- 225/40R20 27.09 in (−0.82%)
- 245/60R16 27.57 in (+0.97%)
- 275/35R20 27.58 in (+0.98%)
- 255/50R17 27.04 in (−0.99%)
- 255/45R18 27.04 in (−1.01%)
- 255/40R19 27.03 in (−1.02%)
- 255/35R20 27.03 in (−1.04%)
- 245/55R17 27.61 in (+1.10%)
- 215/65R16 27.00 in (−1.12%)
- 27x8.50R14 27.00 in (−1.14%)
- 225/60R17 27.63 in (+1.17%)
- 285/40R18 26.98 in (−1.23%)
- 245/50R18 27.65 in (+1.23%)
- 225/45R19 26.97 in (−1.24%)
- 295/30R20 26.97 in (−1.25%)
- 275/40R19 27.66 in (+1.28%)
- 245/45R19 27.68 in (+1.36%)
- 215/75R15 27.70 in (+1.41%)
- 245/40R20 27.72 in (+1.48%)
- 225/55R18 27.74 in (+1.59%)
- 275/45R18 27.74 in (+1.59%)
- 245/35R21 27.75 in (+1.61%)
- 225/50R18 26.86 in (−1.66%)
- 285/35R19 26.85 in (−1.67%)
- 215/70R15 26.85 in (−1.69%)
- 245/30R22 27.79 in (+1.74%)
- 295/25R22 27.81 in (+1.82%)
- 215/70R16 27.85 in (+1.97%)
- 285/35R20 27.85 in (+1.99%)
- 225/50R19 27.86 in (+2.00%)
- 245/35R20 26.75 in (−2.05%)
- 225/55R17 26.74 in (−2.08%)
- 285/30R20 26.73 in (−2.12%)
- 245/40R19 26.72 in (−2.18%)
- 215/75R14 26.70 in (−2.25%)
- 245/45R18 26.68 in (−2.31%)
- 235/70R15 27.95 in (+2.35%)
- 275/40R18 26.66 in (−2.38%)
- 295/30R21 27.97 in (+2.41%)
- 285/40R19 27.98 in (+2.44%)
- 245/50R17 26.65 in (−2.44%)
- 225/60R16 26.63 in (−2.49%)
- 215/65R17 28.00 in (+2.54%)
- 255/30R22 28.02 in (+2.61%)
- 235/65R16 28.03 in (+2.62%)
- 255/35R21 28.03 in (+2.62%)
- 255/40R20 28.03 in (+2.64%)
- 255/45R19 28.04 in (+2.65%)
- 255/50R18 28.04 in (+2.67%)
- 275/35R19 26.58 in (−2.68%)
- 285/45R18 28.10 in (+2.88%)
- 235/60R17 28.10 in (+2.90%)
- 205/75R16 28.11 in (+2.91%)
- 225/65R15 26.52 in (−2.91%)
- 275/30R20 26.50 in (−2.98%)
- 295/35R20 28.13 in (+3.00%)
- 205/65R16 26.49 in (−3.00%)
Open 215/55R18 in the tire size calculator
Source: Calculated from standard tire geometry formulas. Verified . How these numbers are calculated.