TireSizesFinder

245/65R17 vs 265/50R19

265/50R19 is 0.11 in (2.7 mm) shorter than 245/65R17, a −0.36% diameter difference. With the speedometer set for 245/65R17, an indicated 60 mph is 59.8 mph on 265/50R19.

Is this a safe swap?

Diameter difference −0.36%: under 1%

By overall diameter alone, 265/50R19 is a near match for 245/65R17; 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: 245/65R17 (29.54 in) vs 265/50R19 (29.43 in)245/65R1729.54 in × 9.65 in265/50R1929.43 in × 10.43 in
Side profile and tread width, drawn to the same scale.
245/65R17 vs 265/50R19 differences
Measurement245/65R17265/50R19Difference% diff
Overall diameter29.54 in (750.3 mm)29.43 in (747.6 mm)−0.11 in (−2.7 mm)−0.36%
Sidewall height6.27 in (159.3 mm)5.22 in (132.5 mm)−1.05 in (−26.7 mm)−16.80%
Section width9.65 in (245.0 mm)10.43 in (265.0 mm)+0.79 in (+20.0 mm)+8.16%
Circumference92.80 in (2,357.1 mm)92.47 in (2,348.7 mm)−0.33 in (−8.5 mm)−0.36%
Revolutions per mile683685+2+0.36%
True speed with the speedometer calibrated for 245/65R17
IndicatedActual on 245/65R17Actual on 265/50R19Difference
30 mph30.0 mph29.9 mph−0.1 mph
60 mph60.0 mph59.8 mph−0.2 mph
75 mph75.0 mph74.7 mph−0.3 mph

Ride-height change: 265/50R19 lowers the vehicle by 0.05 in (1.4 mm) at the axle (half the −2.7 mm diameter difference).

265/50R19 is 0.11 in shorter than 245/65R17 and 20 mm wider, a 0.36% difference in overall diameter.

With the speedometer calibrated for 245/65R17, an indicated 60 mph is actually 59.8 mph on 265/50R19, and revolutions per mile change from 683 to 685.

265/50R19 mounts on a 19-inch wheel, a plus-2 fitment from the 17-inch wheel of 245/65R17.

Size pages

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