TireSizesFinder

245/30R19 vs 265/30R19

265/30R19 is 0.47 in (12.0 mm) taller than 245/30R19, a +1.91% diameter difference. With the speedometer set for 245/30R19, an indicated 60 mph is 61.1 mph on 265/30R19.

Is this a safe swap?

Diameter difference +1.91%: within the ±3% guideline

By overall diameter alone, 265/30R19 falls inside the ±3% range commonly used as a guideline when replacing 245/30R19. This check uses diameter only. It does not assess load index, speed rating, wheel width or clearance.

To-scale drawing: 245/30R19 (24.79 in) vs 265/30R19 (25.26 in)245/30R1924.79 in × 9.65 in265/30R1925.26 in × 10.43 in
Side profile and tread width, drawn to the same scale.
245/30R19 vs 265/30R19 differences
Measurement245/30R19265/30R19Difference% diff
Overall diameter24.79 in (629.6 mm)25.26 in (641.6 mm)+0.47 in (+12.0 mm)+1.91%
Sidewall height2.89 in (73.5 mm)3.13 in (79.5 mm)+0.24 in (+6.0 mm)+8.16%
Section width9.65 in (245.0 mm)10.43 in (265.0 mm)+0.79 in (+20.0 mm)+8.16%
Circumference77.87 in (1,977.9 mm)79.36 in (2,015.6 mm)+1.48 in (+37.7 mm)+1.91%
Revolutions per mile814798−15−1.87%
True speed with the speedometer calibrated for 245/30R19
IndicatedActual on 245/30R19Actual on 265/30R19Difference
30 mph30.0 mph30.6 mph+0.6 mph
60 mph60.0 mph61.1 mph+1.1 mph
75 mph75.0 mph76.4 mph+1.4 mph

Ride-height change: 265/30R19 raises the vehicle by 0.24 in (6.0 mm) at the axle (half the +12.0 mm diameter difference).

265/30R19 is 0.47 in taller than 245/30R19 and 20 mm wider, a 1.91% difference in overall diameter.

With the speedometer calibrated for 245/30R19, an indicated 60 mph is actually 61.1 mph on 265/30R19, and revolutions per mile change from 814 to 798.

Both sizes mount on 19-inch wheels.

Size pages

Other comparisons with 245/30R19

Other comparisons with 265/30R19

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