TireSizesFinder

265/50R19 vs 295/40R20

295/40R20 is 0.14 in (3.6 mm) shorter than 265/50R19, a −0.48% diameter difference. With the speedometer set for 265/50R19, an indicated 60 mph is 59.7 mph on 295/40R20.

Is this a safe swap?

Diameter difference −0.48%: under 1%

By overall diameter alone, 295/40R20 is a near match for 265/50R19; 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: 265/50R19 (29.43 in) vs 295/40R20 (29.29 in)265/50R1929.43 in × 10.43 in295/40R2029.29 in × 11.61 in
Side profile and tread width, drawn to the same scale.
265/50R19 vs 295/40R20 differences
Measurement265/50R19295/40R20Difference% diff
Overall diameter29.43 in (747.6 mm)29.29 in (744.0 mm)−0.14 in (−3.6 mm)−0.48%
Sidewall height5.22 in (132.5 mm)4.65 in (118.0 mm)−0.57 in (−14.5 mm)−10.94%
Section width10.43 in (265.0 mm)11.61 in (295.0 mm)+1.18 in (+30.0 mm)+11.32%
Circumference92.47 in (2,348.7 mm)92.02 in (2,337.3 mm)−0.45 in (−11.3 mm)−0.48%
Revolutions per mile685689+3+0.48%
True speed with the speedometer calibrated for 265/50R19
IndicatedActual on 265/50R19Actual on 295/40R20Difference
30 mph30.0 mph29.9 mph−0.1 mph
60 mph60.0 mph59.7 mph−0.3 mph
75 mph75.0 mph74.6 mph−0.4 mph

Ride-height change: 295/40R20 lowers the vehicle by 0.07 in (1.8 mm) at the axle (half the −3.6 mm diameter difference).

295/40R20 is 0.14 in shorter than 265/50R19 and 30 mm wider, a 0.48% difference in overall diameter.

With the speedometer calibrated for 265/50R19, an indicated 60 mph is actually 59.7 mph on 295/40R20, and revolutions per mile change from 685 to 689.

295/40R20 mounts on a 20-inch wheel, a plus-1 fitment from the 19-inch wheel of 265/50R19.

Size pages

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