TireSizesFinder

285/40R22 vs 265/45R22

265/45R22 is 0.41 in (10.5 mm) taller than 285/40R22, a +1.33% diameter difference. With the speedometer set for 285/40R22, an indicated 60 mph is 60.8 mph on 265/45R22.

Is this a safe swap?

Diameter difference +1.33%: within the ±3% guideline

By overall diameter alone, 265/45R22 falls inside the ±3% range commonly used as a guideline when replacing 285/40R22. This check uses diameter only. It does not assess load index, speed rating, wheel width or clearance.

To-scale drawing: 285/40R22 (30.98 in) vs 265/45R22 (31.39 in)285/40R2230.98 in × 11.22 in265/45R2231.39 in × 10.43 in
Side profile and tread width, drawn to the same scale.
285/40R22 vs 265/45R22 differences
Measurement285/40R22265/45R22Difference% diff
Overall diameter30.98 in (786.8 mm)31.39 in (797.3 mm)+0.41 in (+10.5 mm)+1.33%
Sidewall height4.49 in (114.0 mm)4.69 in (119.3 mm)+0.21 in (+5.3 mm)+4.61%
Section width11.22 in (285.0 mm)10.43 in (265.0 mm)−0.79 in (−20.0 mm)−7.02%
Circumference97.32 in (2,471.8 mm)98.61 in (2,504.8 mm)+1.30 in (+33.0 mm)+1.33%
Revolutions per mile651643−9−1.32%
True speed with the speedometer calibrated for 285/40R22
IndicatedActual on 285/40R22Actual on 265/45R22Difference
30 mph30.0 mph30.4 mph+0.4 mph
60 mph60.0 mph60.8 mph+0.8 mph
75 mph75.0 mph76.0 mph+1.0 mph

Ride-height change: 265/45R22 raises the vehicle by 0.21 in (5.3 mm) at the axle (half the +10.5 mm diameter difference).

265/45R22 is 0.41 in taller than 285/40R22 and 20 mm narrower, a 1.33% difference in overall diameter.

With the speedometer calibrated for 285/40R22, an indicated 60 mph is actually 60.8 mph on 265/45R22, and revolutions per mile change from 651 to 643.

Both sizes mount on 22-inch wheels.

Size pages

Other comparisons with 285/40R22

Other comparisons with 265/45R22

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