235/65R18 tire size
A 235/65R18 tire is 30.03 in (762.7 mm) tall and 9.25 in (235.0 mm) wide, and turns 672 revolutions per mile.
- 30.03 inOverall diameter
- 6.01 inSidewall height
- 672Revolutions per mile
- 30.0x9.3R18Flotation equivalent
| Measurement | Inches | Millimeters |
|---|---|---|
| Overall diameter | 30.03 in | 762.7 mm |
| Section width | 9.25 in | 235.0 mm |
| Sidewall height | 6.01 in | 152.8 mm |
| Rim diameter | 18.00 in | 457.2 mm |
| Circumference | 94.33 in | 2,396 mm |
| Revolutions per mile | 672 | |
| Flotation equivalent | 30.0x9.3R18 (approx.) | |
235/65R18 is a 18-inch tire with a 235 mm (9.25 in) section width and a 65% aspect ratio, giving a 6.01-inch sidewall and a flotation-style size of about 30.0x9.3R18.
Its overall diameter is 30.03 inches, so it rolls 94.3 inches per revolution and turns about 672 times per mile.
66 other sizes in this list are within 3% of that diameter.
Compare 235/65R18 with plausible swaps
- 235/75R16 vs 235/65R18 (−0.50%)
- 255/70R16 vs 235/65R18 (+0.09%)
- 215/85R16 vs 235/65R18 (+1.21%)
- 245/75R16 vs 235/65R18 (+1.47%)
- 235/70R17 vs 235/65R18 (−0.25%)
- 275/60R17 vs 235/65R18 (−0.12%)
- 255/65R17 vs 235/65R18 (+0.08%)
- 225/75R17 vs 235/65R18 (+0.87%)
- 235/60R18 vs 235/65R18 (−3.08%)
- 275/55R18 vs 235/65R18 (−0.39%)
- 235/65R18 vs 255/60R18 (+0.07%)
- 235/65R18 vs 245/65R18 (+1.70%)
- 235/65R18 vs 255/65R18 (+3.41%)
- 235/65R18 vs 275/50R19 (−0.67%)
- 235/65R18 vs 255/55R19 (+0.05%)
- 235/65R18 vs 235/60R19 (+0.25%)
- 235/65R18 vs 275/45R20 (−0.94%)
- 235/65R18 vs 255/50R20 (+0.04%)
- 235/65R18 vs 285/45R20 (+0.24%)
- 235/65R18 vs 235/55R20 (+0.50%)
Sizes within 3% of 30.03 in diameter
- 255/40R22 30.03 in (+0.01%)
- 255/45R21 30.04 in (+0.03%)
- 255/50R20 30.04 in (+0.04%)
- 255/55R19 30.04 in (+0.05%)
- 255/60R18 30.05 in (+0.07%)
- 255/65R17 30.05 in (+0.08%)
- 255/70R16 30.06 in (+0.09%)
- 30x9.50R15 30.00 in (−0.09%)
- 275/60R17 29.99 in (−0.12%)
- 285/40R21 29.98 in (−0.17%)
- 285/45R20 30.10 in (+0.24%)
- 235/60R19 30.10 in (+0.25%)
- 235/70R17 29.95 in (−0.25%)
- 275/55R18 29.91 in (−0.39%)
- 235/55R20 30.18 in (+0.50%)
- 235/75R16 29.88 in (−0.50%)
- 285/35R22 29.85 in (−0.58%)
- 275/50R19 29.83 in (−0.67%)
- 225/75R17 30.29 in (+0.87%)
- 295/40R21 30.29 in (+0.88%)
- 275/45R20 29.74 in (−0.94%)
- 265/40R22 30.35 in (+1.06%)
- 245/45R21 29.68 in (−1.15%)
- 315/35R21 29.68 in (−1.15%)
- 215/85R16 30.39 in (+1.21%)
- 265/45R21 30.39 in (+1.21%)
- 275/40R21 29.66 in (−1.22%)
- 305/35R22 30.41 in (+1.26%)
- 245/50R20 29.65 in (−1.27%)
- 265/50R20 30.43 in (+1.35%)
- 245/55R19 29.61 in (−1.39%)
- 265/70R15 29.61 in (−1.40%)
- 305/40R20 29.61 in (−1.40%)
- 295/45R20 30.45 in (+1.42%)
- 245/75R16 30.47 in (+1.47%)
- 265/55R19 30.48 in (+1.49%)
- 245/60R18 29.57 in (−1.51%)
- 245/70R17 30.50 in (+1.59%)
- 245/65R17 29.54 in (−1.63%)
- 265/60R18 30.52 in (+1.64%)
- 265/60R17 29.52 in (−1.69%)
- 245/65R18 30.54 in (+1.70%)
- 245/70R16 29.50 in (−1.74%)
- 265/65R17 30.56 in (+1.78%)
- 245/75R15 29.47 in (−1.86%)
- 265/70R16 30.61 in (+1.93%)
- 245/55R20 30.61 in (+1.94%)
- 315/30R22 29.44 in (−1.95%)
- 265/50R19 29.43 in (−1.98%)
- 275/25R24 29.41 in (−2.05%)
- 265/75R15 30.65 in (+2.07%)
- 275/40R22 30.66 in (+2.11%)
- 265/45R20 29.39 in (−2.12%)
- 265/40R21 29.35 in (−2.27%)
- 235/45R21 29.33 in (−2.33%)
- 285/30R24 30.73 in (+2.35%)
- 275/45R21 30.74 in (+2.39%)
- 265/35R22 29.30 in (−2.41%)
- 295/40R20 29.29 in (−2.45%)
- 225/75R16 29.29 in (−2.46%)
- 305/45R20 30.81 in (+2.60%)
- 275/50R20 30.83 in (+2.66%)
- 235/75R17 30.88 in (+2.83%)
- 235/55R19 29.18 in (−2.83%)
- 275/55R19 30.91 in (+2.94%)
- 295/35R21 29.13 in (−2.99%)
Open 235/65R18 in the tire size calculator
Source: Calculated from standard tire geometry formulas. Verified . How these numbers are calculated.