TireSizesFinder

225/65R17 vs 235/50R19

235/50R19 is 0.26 in (6.7 mm) shorter than 225/65R17, a −0.93% diameter difference. With the speedometer set for 225/65R17, an indicated 60 mph is 59.4 mph on 235/50R19.

Is this a safe swap?

Diameter difference −0.93%: under 1%

By overall diameter alone, 235/50R19 is a near match for 225/65R17; 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: 225/65R17 (28.52 in) vs 235/50R19 (28.25 in)225/65R1728.52 in × 8.86 in235/50R1928.25 in × 9.25 in
Side profile and tread width, drawn to the same scale.
225/65R17 vs 235/50R19 differences
Measurement225/65R17235/50R19Difference% diff
Overall diameter28.52 in (724.3 mm)28.25 in (717.6 mm)−0.26 in (−6.7 mm)−0.93%
Sidewall height5.76 in (146.3 mm)4.63 in (117.5 mm)−1.13 in (−28.7 mm)−19.66%
Section width8.86 in (225.0 mm)9.25 in (235.0 mm)+0.39 in (+10.0 mm)+4.44%
Circumference89.58 in (2,275.5 mm)88.76 in (2,254.4 mm)−0.83 in (−21.0 mm)−0.93%
Revolutions per mile707714+7+0.93%
True speed with the speedometer calibrated for 225/65R17
IndicatedActual on 225/65R17Actual on 235/50R19Difference
30 mph30.0 mph29.7 mph−0.3 mph
60 mph60.0 mph59.4 mph−0.6 mph
75 mph75.0 mph74.3 mph−0.7 mph

Ride-height change: 235/50R19 lowers the vehicle by 0.13 in (3.4 mm) at the axle (half the −6.7 mm diameter difference).

235/50R19 is 0.26 in shorter than 225/65R17 and 10 mm wider, a 0.93% difference in overall diameter.

With the speedometer calibrated for 225/65R17, an indicated 60 mph is actually 59.4 mph on 235/50R19, and revolutions per mile change from 707 to 714.

235/50R19 mounts on a 19-inch wheel, a plus-2 fitment from the 17-inch wheel of 225/65R17.

Size pages

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