245/40R20 tire size
A 245/40R20 tire is 27.72 in (704.0 mm) tall and 9.65 in (245.0 mm) wide, and turns 728 revolutions per mile.
- 27.72 inOverall diameter
- 3.86 inSidewall height
- 728Revolutions per mile
- 27.7x9.6R20Flotation equivalent
| Measurement | Inches | Millimeters |
|---|---|---|
| Overall diameter | 27.72 in | 704.0 mm |
| Section width | 9.65 in | 245.0 mm |
| Sidewall height | 3.86 in | 98.0 mm |
| Rim diameter | 20.00 in | 508.0 mm |
| Circumference | 87.07 in | 2,212 mm |
| Revolutions per mile | 728 | |
| Flotation equivalent | 27.7x9.6R20 (approx.) | |
245/40R20 is a 20-inch tire with a 245 mm (9.65 in) section width and a 40% aspect ratio, giving a 3.86-inch sidewall and a flotation-style size of about 27.7x9.6R20.
Its overall diameter is 27.72 inches, so it rolls 87.1 inches per revolution and turns about 728 times per mile.
72 other sizes in this list are within 3% of that diameter.
Compare 245/40R20 with plausible swaps
- 245/50R18 vs 245/40R20 (−0.26%)
- 225/55R18 vs 245/40R20 (+0.10%)
- 275/45R18 vs 245/40R20 (+0.10%)
- 275/40R19 vs 245/40R20 (−0.20%)
- 245/45R19 vs 245/40R20 (−0.13%)
- 225/50R19 vs 245/40R20 (+0.51%)
- 285/40R19 vs 245/40R20 (+0.94%)
- 245/35R20 vs 245/40R20 (−3.48%)
- 225/40R20 vs 245/40R20 (−2.27%)
- 275/35R20 vs 245/40R20 (−0.50%)
- 245/40R20 vs 285/35R20 (+0.50%)
- 245/40R20 vs 255/40R20 (+1.14%)
- 245/40R20 vs 265/40R20 (+2.27%)
- 245/40R20 vs 245/45R20 (+3.48%)
- 245/40R20 vs 275/30R21 (−0.80%)
- 245/40R20 vs 245/35R21 (+0.13%)
- 245/40R20 vs 295/30R21 (+0.91%)
- 245/40R20 vs 245/30R22 (+0.26%)
- 245/40R20 vs 295/25R22 (+0.33%)
- 245/40R20 vs 255/30R22 (+1.11%)
Sizes within 3% of 27.72 in diameter
- 215/75R15 27.70 in (−0.07%)
- 225/55R18 27.74 in (+0.10%)
- 275/45R18 27.74 in (+0.10%)
- 245/35R21 27.75 in (+0.13%)
- 245/45R19 27.68 in (−0.13%)
- 275/40R19 27.66 in (−0.20%)
- 245/50R18 27.65 in (−0.26%)
- 245/30R22 27.79 in (+0.26%)
- 225/60R17 27.63 in (−0.31%)
- 295/25R22 27.81 in (+0.33%)
- 245/55R17 27.61 in (−0.38%)
- 215/70R16 27.85 in (+0.48%)
- 275/35R20 27.58 in (−0.50%)
- 285/35R20 27.85 in (+0.50%)
- 225/50R19 27.86 in (+0.51%)
- 245/60R16 27.57 in (−0.51%)
- 225/65R16 27.52 in (−0.72%)
- 275/30R21 27.50 in (−0.80%)
- 235/70R15 27.95 in (+0.85%)
- 295/30R21 27.97 in (+0.91%)
- 285/40R19 27.98 in (+0.94%)
- 215/65R17 28.00 in (+1.04%)
- 255/30R22 28.02 in (+1.11%)
- 235/65R16 28.03 in (+1.12%)
- 255/35R21 28.03 in (+1.12%)
- 305/35R19 27.41 in (−1.12%)
- 225/70R15 27.40 in (−1.14%)
- 255/40R20 28.03 in (+1.14%)
- 255/45R19 28.04 in (+1.15%)
- 255/50R18 28.04 in (+1.16%)
- 265/45R18 27.39 in (−1.18%)
- 265/40R19 27.35 in (−1.34%)
- 285/45R18 28.10 in (+1.38%)
- 235/60R17 28.10 in (+1.39%)
- 205/75R16 28.11 in (+1.41%)
- 235/45R19 27.33 in (−1.41%)
- 215/55R18 27.31 in (−1.46%)
- 265/35R20 27.30 in (−1.49%)
- 295/35R20 28.13 in (+1.49%)
- 295/40R18 27.29 in (−1.53%)
- 225/75R14 27.29 in (−1.55%)
- 235/55R18 28.18 in (+1.66%)
- 235/50R18 27.25 in (−1.68%)
- 305/30R21 28.20 in (+1.76%)
- 235/50R19 28.25 in (+1.93%)
- 235/55R17 27.18 in (−1.95%)
- 265/30R22 28.26 in (+1.96%)
- 215/60R17 27.16 in (−2.02%)
- 225/75R15 28.29 in (+2.06%)
- 295/40R19 28.29 in (+2.07%)
- 265/35R21 28.30 in (+2.12%)
- 295/35R19 27.13 in (−2.12%)
- 205/75R15 27.11 in (−2.20%)
- 235/45R20 28.33 in (+2.20%)
- 235/60R16 27.10 in (−2.22%)
- 225/40R20 27.09 in (−2.27%)
- 265/40R20 28.35 in (+2.27%)
- 265/45R19 28.39 in (+2.43%)
- 255/50R17 27.04 in (−2.44%)
- 255/45R18 27.04 in (−2.46%)
- 225/70R16 28.40 in (+2.47%)
- 255/40R19 27.03 in (−2.47%)
- 255/35R20 27.03 in (−2.49%)
- 215/65R16 27.00 in (−2.57%)
- 27x8.50R14 27.00 in (−2.59%)
- 265/50R18 28.43 in (+2.59%)
- 285/40R18 26.98 in (−2.67%)
- 225/45R19 26.97 in (−2.68%)
- 295/30R20 26.97 in (−2.70%)
- 275/30R22 28.50 in (+2.81%)
- 225/65R17 28.52 in (+2.88%)
- 245/65R16 28.54 in (+2.97%)
Open 245/40R20 in the tire size calculator
Source: Calculated from standard tire geometry formulas. Verified . How these numbers are calculated.