235/45R21 tire size
A 235/45R21 tire is 29.33 in (744.9 mm) tall and 9.25 in (235.0 mm) wide, and turns 688 revolutions per mile.
- 29.33 inOverall diameter
- 4.16 inSidewall height
- 688Revolutions per mile
- 29.3x9.3R21Flotation equivalent
| Measurement | Inches | Millimeters |
|---|---|---|
| Overall diameter | 29.33 in | 744.9 mm |
| Section width | 9.25 in | 235.0 mm |
| Sidewall height | 4.16 in | 105.8 mm |
| Rim diameter | 21.00 in | 533.4 mm |
| Circumference | 92.13 in | 2,340 mm |
| Revolutions per mile | 688 | |
| Flotation equivalent | 29.3x9.3R21 (approx.) | |
235/45R21 is a 21-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 29.3x9.3R21.
Its overall diameter is 29.33 inches, so it rolls 92.1 inches per revolution and turns about 688 times per mile.
76 other sizes in this list are within 3% of that diameter.
Compare 235/45R21 with plausible swaps
- 255/50R19 vs 235/45R21 (−0.98%)
- 285/45R19 vs 235/45R21 (−0.78%)
- 235/55R19 vs 235/45R21 (−0.51%)
- 265/50R19 vs 235/45R21 (+0.36%)
- 245/55R19 vs 235/45R21 (+0.97%)
- 255/45R20 vs 235/45R21 (−0.99%)
- 295/40R20 vs 235/45R21 (−0.12%)
- 265/45R20 vs 235/45R21 (+0.21%)
- 305/40R20 vs 235/45R21 (+0.95%)
- 255/40R21 vs 235/45R21 (−1.01%)
- 295/35R21 vs 235/45R21 (−0.67%)
- 235/45R21 vs 265/40R21 (+0.07%)
- 235/45R21 vs 275/40R21 (+1.14%)
- 235/45R21 vs 245/45R21 (+1.21%)
- 235/45R21 vs 255/45R21 (+2.42%)
- 235/45R21 vs 255/35R22 (−1.02%)
- 235/45R21 vs 265/35R22 (−0.08%)
- 235/45R21 vs 315/30R22 (+0.39%)
Sizes within 3% of 29.33 in diameter
- 265/40R21 29.35 in (+0.07%)
- 265/35R22 29.30 in (−0.08%)
- 295/40R20 29.29 in (−0.12%)
- 225/75R16 29.29 in (−0.13%)
- 265/45R20 29.39 in (+0.21%)
- 275/25R24 29.41 in (+0.30%)
- 265/50R19 29.43 in (+0.36%)
- 315/30R22 29.44 in (+0.39%)
- 245/75R15 29.47 in (+0.48%)
- 235/55R19 29.18 in (−0.51%)
- 245/70R16 29.50 in (+0.60%)
- 265/60R17 29.52 in (+0.66%)
- 295/35R21 29.13 in (−0.67%)
- 245/65R17 29.54 in (+0.72%)
- 235/60R18 29.10 in (−0.77%)
- 285/45R19 29.10 in (−0.78%)
- 245/60R18 29.57 in (+0.85%)
- 255/70R15 29.06 in (−0.93%)
- 255/65R16 29.05 in (−0.94%)
- 265/70R15 29.61 in (+0.95%)
- 255/60R17 29.05 in (−0.95%)
- 305/40R20 29.61 in (+0.95%)
- 255/55R18 29.04 in (−0.97%)
- 245/55R19 29.61 in (+0.97%)
- 255/50R19 29.04 in (−0.98%)
- 255/45R20 29.04 in (−0.99%)
- 255/40R21 29.03 in (−1.01%)
- 235/65R17 29.03 in (−1.02%)
- 255/35R22 29.03 in (−1.02%)
- 245/50R20 29.65 in (+1.09%)
- 275/40R21 29.66 in (+1.14%)
- 285/40R20 28.98 in (−1.19%)
- 245/45R21 29.68 in (+1.21%)
- 315/35R21 29.68 in (+1.21%)
- 295/30R22 28.97 in (−1.22%)
- 235/70R16 28.95 in (−1.28%)
- 275/45R20 29.74 in (+1.42%)
- 235/75R15 28.88 in (−1.53%)
- 285/35R21 28.85 in (−1.61%)
- 275/50R19 29.83 in (+1.70%)
- 285/35R22 29.85 in (+1.80%)
- 235/75R16 29.88 in (+1.88%)
- 245/35R22 28.75 in (−1.96%)
- 275/55R18 29.91 in (+1.99%)
- 225/55R19 28.74 in (−1.99%)
- 275/45R19 28.74 in (−1.99%)
- 285/30R22 28.73 in (−2.03%)
- 245/40R21 28.72 in (−2.08%)
- 235/70R17 29.95 in (+2.13%)
- 215/75R16 28.70 in (−2.15%)
- 245/45R20 28.68 in (−2.20%)
- 315/35R20 28.68 in (−2.20%)
- 325/30R21 28.68 in (−2.22%)
- 285/40R21 29.98 in (+2.22%)
- 275/60R17 29.99 in (+2.27%)
- 275/40R20 28.66 in (−2.27%)
- 30x9.50R15 30.00 in (+2.30%)
- 245/50R19 28.65 in (−2.32%)
- 225/60R18 28.63 in (−2.38%)
- 235/65R18 30.03 in (+2.39%)
- 255/40R22 30.03 in (+2.40%)
- 255/45R21 30.04 in (+2.42%)
- 255/50R20 30.04 in (+2.43%)
- 245/55R18 28.61 in (−2.44%)
- 255/55R19 30.04 in (+2.44%)
- 255/60R18 30.05 in (+2.46%)
- 255/65R17 30.05 in (+2.47%)
- 255/70R16 30.06 in (+2.48%)
- 275/35R21 28.58 in (−2.55%)
- 245/60R17 28.57 in (−2.56%)
- 285/45R20 30.10 in (+2.63%)
- 235/60R19 30.10 in (+2.64%)
- 245/65R16 28.54 in (−2.68%)
- 225/65R17 28.52 in (−2.77%)
- 275/30R22 28.50 in (−2.83%)
- 235/55R20 30.18 in (+2.90%)
Open 235/45R21 in the tire size calculator
Source: Calculated from standard tire geometry formulas. Verified . How these numbers are calculated.