TireSizesFinder

315/30R22 vs 275/25R24

275/25R24 is 0.03 in (0.7 mm) shorter than 315/30R22, a −0.09% diameter difference. With the speedometer set for 315/30R22, an indicated 60 mph is 59.9 mph on 275/25R24.

Is this a safe swap?

Diameter difference −0.09%: under 1%

By overall diameter alone, 275/25R24 is a near match for 315/30R22; the speedometer changes by less than 1%. This check uses diameter only. It does not assess load index, speed rating, wheel width or clearance.

To-scale drawing: 315/30R22 (29.44 in) vs 275/25R24 (29.41 in)315/30R2229.44 in × 12.40 in275/25R2429.41 in × 10.83 in
Side profile and tread width, drawn to the same scale.
315/30R22 vs 275/25R24 differences
Measurement315/30R22275/25R24Difference% diff
Overall diameter29.44 in (747.8 mm)29.41 in (747.1 mm)−0.03 in (−0.7 mm)−0.09%
Sidewall height3.72 in (94.5 mm)2.71 in (68.8 mm)−1.01 in (−25.7 mm)−27.25%
Section width12.40 in (315.0 mm)10.83 in (275.0 mm)−1.57 in (−40.0 mm)−12.70%
Circumference92.49 in (2,349.3 mm)92.40 in (2,347.1 mm)−0.09 in (−2.2 mm)−0.09%
Revolutions per mile685686+1+0.09%
True speed with the speedometer calibrated for 315/30R22
IndicatedActual on 315/30R22Actual on 275/25R24Difference
30 mph30.0 mph30.0 mph0.0 mph
60 mph60.0 mph59.9 mph−0.1 mph
75 mph75.0 mph74.9 mph−0.1 mph

Ride-height change: 275/25R24 lowers the vehicle by 0.01 in (0.4 mm) at the axle (half the −0.7 mm diameter difference).

275/25R24 is 0.03 in shorter than 315/30R22 and 40 mm narrower, a 0.09% difference in overall diameter.

With the speedometer calibrated for 315/30R22, an indicated 60 mph is actually 59.9 mph on 275/25R24, and revolutions per mile change from 685 to 686.

275/25R24 mounts on a 24-inch wheel, a plus-2 fitment from the 22-inch wheel of 315/30R22.

Size pages

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Other comparisons with 275/25R24

Source: Calculated from standard tire geometry formulas. Verified . How these numbers are calculated.