TireSizesFinder

285/45R19 vs 295/35R21

295/35R21 is 0.03 in (0.8 mm) taller than 285/45R19, a +0.11% diameter difference. With the speedometer set for 285/45R19, an indicated 60 mph is 60.1 mph on 295/35R21.

Is this a safe swap?

Diameter difference +0.11%: under 1%

By overall diameter alone, 295/35R21 is a near match for 285/45R19; 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: 285/45R19 (29.10 in) vs 295/35R21 (29.13 in)285/45R1929.10 in × 11.22 in295/35R2129.13 in × 11.61 in
Side profile and tread width, drawn to the same scale.
285/45R19 vs 295/35R21 differences
Measurement285/45R19295/35R21Difference% diff
Overall diameter29.10 in (739.1 mm)29.13 in (739.9 mm)+0.03 in (+0.8 mm)+0.11%
Sidewall height5.05 in (128.3 mm)4.06 in (103.3 mm)−0.98 in (−25.0 mm)−19.49%
Section width11.22 in (285.0 mm)11.61 in (295.0 mm)+0.39 in (+10.0 mm)+3.51%
Circumference91.42 in (2,322.0 mm)91.51 in (2,324.5 mm)+0.10 in (+2.5 mm)+0.11%
Revolutions per mile693692−1−0.11%
True speed with the speedometer calibrated for 285/45R19
IndicatedActual on 285/45R19Actual on 295/35R21Difference
30 mph30.0 mph30.0 mph0.0 mph
60 mph60.0 mph60.1 mph+0.1 mph
75 mph75.0 mph75.1 mph+0.1 mph

Ride-height change: 295/35R21 raises the vehicle by 0.02 in (0.4 mm) at the axle (half the +0.8 mm diameter difference).

295/35R21 is 0.03 in taller than 285/45R19 and 10 mm wider, a 0.11% difference in overall diameter.

With the speedometer calibrated for 285/45R19, an indicated 60 mph is actually 60.1 mph on 295/35R21, and revolutions per mile change from 693 to 692.

295/35R21 mounts on a 21-inch wheel, a plus-2 fitment from the 19-inch wheel of 285/45R19.

Size pages

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