265/45R21 tire size
A 265/45R21 tire is 30.39 in (771.9 mm) tall and 10.43 in (265.0 mm) wide, and turns 664 revolutions per mile.
- 30.39 inOverall diameter
- 4.69 inSidewall height
- 664Revolutions per mile
- 30.4x10.4R21Flotation equivalent
| Measurement | Inches | Millimeters |
|---|---|---|
| Overall diameter | 30.39 in | 771.9 mm |
| Section width | 10.43 in | 265.0 mm |
| Sidewall height | 4.69 in | 119.3 mm |
| Rim diameter | 21.00 in | 533.4 mm |
| Circumference | 95.47 in | 2,425 mm |
| Revolutions per mile | 664 | |
| Flotation equivalent | 30.4x10.4R21 (approx.) | |
265/45R21 is a 21-inch tire with a 265 mm (10.43 in) section width and a 45% aspect ratio, giving a 4.69-inch sidewall and a flotation-style size of about 30.4x10.4R21.
Its overall diameter is 30.39 inches, so it rolls 95.5 inches per revolution and turns about 664 times per mile.
69 other sizes in this list are within 3% of that diameter.
Compare 265/45R21 with plausible swaps
- 255/55R19 vs 265/45R21 (−1.14%)
- 235/60R19 vs 265/45R21 (−0.95%)
- 265/55R19 vs 265/45R21 (+0.29%)
- 255/50R20 vs 265/45R21 (−1.15%)
- 285/45R20 vs 265/45R21 (−0.96%)
- 235/55R20 vs 265/45R21 (−0.70%)
- 265/50R20 vs 265/45R21 (+0.14%)
- 295/45R20 vs 265/45R21 (+0.21%)
- 245/55R20 vs 265/45R21 (+0.73%)
- 265/40R21 vs 265/45R21 (−3.43%)
- 245/45R21 vs 265/45R21 (−2.33%)
- 255/45R21 vs 265/45R21 (−1.17%)
- 295/40R21 vs 265/45R21 (−0.32%)
- 265/45R21 vs 275/45R21 (+1.17%)
- 265/45R21 vs 285/45R21 (+2.33%)
- 265/45R21 vs 265/50R21 (+3.43%)
- 265/45R21 vs 255/40R22 (−1.18%)
- 265/45R21 vs 265/40R22 (−0.14%)
- 265/45R21 vs 305/35R22 (+0.05%)
- 265/45R21 vs 275/40R22 (+0.89%)
Sizes within 3% of 30.39 in diameter
- 215/85R16 30.39 in (0.00%)
- 305/35R22 30.41 in (+0.05%)
- 265/50R20 30.43 in (+0.14%)
- 265/40R22 30.35 in (−0.14%)
- 295/45R20 30.45 in (+0.21%)
- 245/75R16 30.47 in (+0.26%)
- 265/55R19 30.48 in (+0.29%)
- 295/40R21 30.29 in (−0.32%)
- 225/75R17 30.29 in (−0.34%)
- 245/70R17 30.50 in (+0.38%)
- 265/60R18 30.52 in (+0.43%)
- 245/65R18 30.54 in (+0.49%)
- 265/65R17 30.56 in (+0.57%)
- 235/55R20 30.18 in (−0.70%)
- 265/70R16 30.61 in (+0.71%)
- 245/55R20 30.61 in (+0.73%)
- 265/75R15 30.65 in (+0.86%)
- 275/40R22 30.66 in (+0.89%)
- 235/60R19 30.10 in (−0.95%)
- 285/45R20 30.10 in (−0.96%)
- 255/70R16 30.06 in (−1.10%)
- 255/65R17 30.05 in (−1.11%)
- 255/60R18 30.05 in (−1.13%)
- 285/30R24 30.73 in (+1.13%)
- 255/55R19 30.04 in (−1.14%)
- 255/50R20 30.04 in (−1.15%)
- 255/45R21 30.04 in (−1.17%)
- 275/45R21 30.74 in (+1.17%)
- 255/40R22 30.03 in (−1.18%)
- 235/65R18 30.03 in (−1.19%)
- 30x9.50R15 30.00 in (−1.28%)
- 275/60R17 29.99 in (−1.31%)
- 285/40R21 29.98 in (−1.36%)
- 305/45R20 30.81 in (+1.37%)
- 235/70R17 29.95 in (−1.44%)
- 275/50R20 30.83 in (+1.44%)
- 275/55R18 29.91 in (−1.58%)
- 235/75R17 30.88 in (+1.61%)
- 235/75R16 29.88 in (−1.68%)
- 275/55R19 30.91 in (+1.71%)
- 285/35R22 29.85 in (−1.76%)
- 275/50R19 29.83 in (−1.85%)
- 285/40R22 30.98 in (+1.93%)
- 275/60R18 30.99 in (+1.98%)
- 31x10.50R15 31.00 in (+2.01%)
- 31x10.50R16 31.00 in (+2.01%)
- 235/65R19 31.03 in (+2.10%)
- 275/45R20 29.74 in (−2.12%)
- 255/50R21 31.04 in (+2.14%)
- 255/55R20 31.04 in (+2.15%)
- 255/60R19 31.05 in (+2.16%)
- 255/65R18 31.05 in (+2.18%)
- 255/70R17 31.06 in (+2.19%)
- 275/65R17 31.07 in (+2.25%)
- 245/45R21 29.68 in (−2.33%)
- 315/35R21 29.68 in (−2.33%)
- 285/45R21 31.10 in (+2.33%)
- 275/40R21 29.66 in (−2.40%)
- 245/50R20 29.65 in (−2.45%)
- 245/55R19 29.61 in (−2.57%)
- 265/70R15 29.61 in (−2.58%)
- 305/40R20 29.61 in (−2.58%)
- 245/60R18 29.57 in (−2.68%)
- 305/30R24 31.20 in (+2.68%)
- 285/50R20 31.22 in (+2.73%)
- 245/65R17 29.54 in (−2.80%)
- 265/60R17 29.52 in (−2.86%)
- 245/70R16 29.50 in (−2.91%)
- 295/40R22 31.29 in (+2.97%)
Open 265/45R21 in the tire size calculator
Source: Calculated from standard tire geometry formulas. Verified . How these numbers are calculated.