295/40R21 tire size

A 295/40R21 tire is 30.29 in (769.4 mm) tall and 11.61 in (295.0 mm) wide, and turns 666 revolutions per mile.

• 30.29 inOverall diameter
• 4.65 inSidewall height
• 666Revolutions per mile
• 30.3x11.6R21Flotation equivalent

295/40R21 is a 21-inch tire with a 295 mm (11.61 in) section width and a 40% aspect ratio, giving a 4.65-inch sidewall and a flotation-style size of about 30.3x11.6R21.

Its overall diameter is 30.29 inches, so it rolls 95.2 inches per revolution and turns about 666 times per mile.

71 other sizes in this list are within 3% of that diameter.

Compare 295/40R21 with plausible swaps

• 255/55R19 vs 295/40R21 (−0.82%)
• 235/60R19 vs 295/40R21 (−0.62%)
• 265/55R19 vs 295/40R21 (+0.61%)
• 255/50R20 vs 295/40R21 (−0.83%)
• 285/45R20 vs 295/40R21 (−0.64%)
• 235/55R20 vs 295/40R21 (−0.38%)
• 265/50R20 vs 295/40R21 (+0.47%)
• 295/45R20 vs 295/40R21 (+0.53%)
• 245/55R20 vs 295/40R21 (+1.05%)
• 295/35R21 vs 295/40R21 (−3.83%)
• 275/40R21 vs 295/40R21 (−2.08%)
• 285/40R21 vs 295/40R21 (−1.04%)
• 255/45R21 vs 295/40R21 (−0.84%)
• 295/40R21 vs 265/45R21 (+0.32%)
• 295/40R21 vs 285/35R22 (−1.44%)
• 295/40R21 vs 255/40R22 (−0.86%)
• 295/40R21 vs 265/40R22 (+0.18%)
• 295/40R21 vs 305/35R22 (+0.38%)
• 295/40R21 vs 275/40R22 (+1.22%)

Sizes within 3% of 30.29 in diameter

• 225/75R17 30.29 in (−0.01%)
• 265/40R22 30.35 in (+0.18%)
• 215/85R16 30.39 in (+0.32%)
• 265/45R21 30.39 in (+0.32%)
• 235/55R20 30.18 in (−0.38%)
• 305/35R22 30.41 in (+0.38%)
• 265/50R20 30.43 in (+0.47%)
• 295/45R20 30.45 in (+0.53%)
• 245/75R16 30.47 in (+0.58%)
• 265/55R19 30.48 in (+0.61%)
• 235/60R19 30.10 in (−0.62%)
• 285/45R20 30.10 in (−0.64%)
• 245/70R17 30.50 in (+0.70%)
• 265/60R18 30.52 in (+0.75%)
• 255/70R16 30.06 in (−0.78%)
• 255/65R17 30.05 in (−0.79%)
• 255/60R18 30.05 in (−0.81%)
• 245/65R18 30.54 in (+0.82%)
• 255/55R19 30.04 in (−0.82%)
• 255/50R20 30.04 in (−0.83%)
• 255/45R21 30.04 in (−0.84%)
• 255/40R22 30.03 in (−0.86%)
• 235/65R18 30.03 in (−0.87%)
• 265/65R17 30.56 in (+0.90%)
• 30x9.50R15 30.00 in (−0.96%)
• 275/60R17 29.99 in (−0.99%)
• 265/70R16 30.61 in (+1.04%)
• 285/40R21 29.98 in (−1.04%)
• 245/55R20 30.61 in (+1.05%)
• 235/70R17 29.95 in (−1.12%)
• 265/75R15 30.65 in (+1.18%)
• 275/40R22 30.66 in (+1.22%)
• 275/55R18 29.91 in (−1.26%)
• 235/75R16 29.88 in (−1.36%)
• 285/35R22 29.85 in (−1.44%)
• 285/30R24 30.73 in (+1.46%)
• 275/45R21 30.74 in (+1.49%)
• 275/50R19 29.83 in (−1.53%)
• 305/45R20 30.81 in (+1.70%)
• 275/50R20 30.83 in (+1.77%)
• 275/45R20 29.74 in (−1.81%)
• 235/75R17 30.88 in (+1.94%)
• 245/45R21 29.68 in (−2.01%)
• 315/35R21 29.68 in (−2.01%)
• 275/55R19 30.91 in (+2.04%)
• 275/40R21 29.66 in (−2.08%)
• 245/50R20 29.65 in (−2.13%)
• 245/55R19 29.61 in (−2.25%)
• 265/70R15 29.61 in (−2.26%)
• 305/40R20 29.61 in (−2.26%)
• 285/40R22 30.98 in (+2.26%)
• 275/60R18 30.99 in (+2.31%)
• 31x10.50R15 31.00 in (+2.34%)
• 31x10.50R16 31.00 in (+2.34%)
• 245/60R18 29.57 in (−2.37%)
• 235/65R19 31.03 in (+2.43%)
• 255/50R21 31.04 in (+2.47%)
• 245/65R17 29.54 in (−2.48%)
• 255/55R20 31.04 in (+2.48%)
• 255/60R19 31.05 in (+2.50%)
• 255/65R18 31.05 in (+2.51%)
• 255/70R17 31.06 in (+2.52%)
• 265/60R17 29.52 in (−2.55%)
• 275/65R17 31.07 in (+2.59%)
• 245/70R16 29.50 in (−2.60%)
• 285/45R21 31.10 in (+2.66%)
• 245/75R15 29.47 in (−2.72%)
• 315/30R22 29.44 in (−2.81%)
• 265/50R19 29.43 in (−2.83%)
• 275/25R24 29.41 in (−2.90%)
• 265/45R20 29.39 in (−2.98%)

Open 295/40R21 in the tire size calculator

Source: Calculated from standard tire geometry formulas. Verified 2026-09-27. How these numbers are calculated.