TireSizesFinder

225/35R19 vs 265/30R19

265/30R19 is 0.06 in (1.5 mm) taller than 225/35R19, a +0.23% diameter difference. With the speedometer set for 225/35R19, an indicated 60 mph is 60.1 mph on 265/30R19.

Is this a safe swap?

Diameter difference +0.23%: under 1%

By overall diameter alone, 265/30R19 is a near match for 225/35R19; 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: 225/35R19 (25.20 in) vs 265/30R19 (25.26 in)225/35R1925.20 in × 8.86 in265/30R1925.26 in × 10.43 in
Side profile and tread width, drawn to the same scale.
225/35R19 vs 265/30R19 differences
Measurement225/35R19265/30R19Difference% diff
Overall diameter25.20 in (640.1 mm)25.26 in (641.6 mm)+0.06 in (+1.5 mm)+0.23%
Sidewall height3.10 in (78.8 mm)3.13 in (79.5 mm)+0.03 in (+0.8 mm)+0.95%
Section width8.86 in (225.0 mm)10.43 in (265.0 mm)+1.57 in (+40.0 mm)+17.78%
Circumference79.17 in (2,010.9 mm)79.36 in (2,015.6 mm)+0.19 in (+4.7 mm)+0.23%
Revolutions per mile800798−2−0.23%
True speed with the speedometer calibrated for 225/35R19
IndicatedActual on 225/35R19Actual on 265/30R19Difference
30 mph30.0 mph30.1 mph+0.1 mph
60 mph60.0 mph60.1 mph+0.1 mph
75 mph75.0 mph75.2 mph+0.2 mph

Ride-height change: 265/30R19 raises the vehicle by 0.03 in (0.8 mm) at the axle (half the +1.5 mm diameter difference).

265/30R19 is 0.06 in taller than 225/35R19 and 40 mm wider, a 0.23% difference in overall diameter.

With the speedometer calibrated for 225/35R19, an indicated 60 mph is actually 60.1 mph on 265/30R19, and revolutions per mile change from 800 to 798.

Both sizes mount on 19-inch wheels.

Size pages

Other comparisons with 225/35R19

Other comparisons with 265/30R19

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