TireSizesFinder

265/55R19 vs 295/45R20

295/45R20 is 0.02 in (0.6 mm) shorter than 265/55R19, a −0.08% diameter difference. With the speedometer set for 265/55R19, an indicated 60 mph is 60.0 mph on 295/45R20.

Is this a safe swap?

Diameter difference −0.08%: under 1%

By overall diameter alone, 295/45R20 is a near match for 265/55R19; 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: 265/55R19 (30.48 in) vs 295/45R20 (30.45 in)265/55R1930.48 in × 10.43 in295/45R2030.45 in × 11.61 in
Side profile and tread width, drawn to the same scale.
265/55R19 vs 295/45R20 differences
Measurement265/55R19295/45R20Difference% diff
Overall diameter30.48 in (774.1 mm)30.45 in (773.5 mm)−0.02 in (−0.6 mm)−0.08%
Sidewall height5.74 in (145.8 mm)5.23 in (132.8 mm)−0.51 in (−13.0 mm)−8.92%
Section width10.43 in (265.0 mm)11.61 in (295.0 mm)+1.18 in (+30.0 mm)+11.32%
Circumference95.74 in (2,431.9 mm)95.67 in (2,430.0 mm)−0.07 in (−1.9 mm)−0.08%
Revolutions per mile662662+1+0.08%
True speed with the speedometer calibrated for 265/55R19
IndicatedActual on 265/55R19Actual on 295/45R20Difference
30 mph30.0 mph30.0 mph0.0 mph
60 mph60.0 mph60.0 mph0.0 mph
75 mph75.0 mph74.9 mph−0.1 mph

Ride-height change: 295/45R20 lowers the vehicle by 0.01 in (0.3 mm) at the axle (half the −0.6 mm diameter difference).

295/45R20 is 0.02 in shorter than 265/55R19 and 30 mm wider, a 0.08% difference in overall diameter.

With the speedometer calibrated for 265/55R19, an indicated 60 mph is actually 60.0 mph on 295/45R20, and revolutions per mile change from 662 to 662.

295/45R20 mounts on a 20-inch wheel, a plus-1 fitment from the 19-inch wheel of 265/55R19.

Size pages

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