TireSizesFinder

265/70R16 vs 225/75R17

225/75R17 is 0.32 in (8.1 mm) shorter than 265/70R16, a −1.04% diameter difference. With the speedometer set for 265/70R16, an indicated 60 mph is 59.4 mph on 225/75R17.

Is this a safe swap?

Diameter difference −1.04%: within the ±3% guideline

By overall diameter alone, 225/75R17 falls inside the ±3% range commonly used as a guideline when replacing 265/70R16. This check uses diameter only. It does not assess load index, speed rating, wheel width or clearance.

To-scale drawing: 265/70R16 (30.61 in) vs 225/75R17 (30.29 in)265/70R1630.61 in × 10.43 in225/75R1730.29 in × 8.86 in
Side profile and tread width, drawn to the same scale.
265/70R16 vs 225/75R17 differences
Measurement265/70R16225/75R17Difference% diff
Overall diameter30.61 in (777.4 mm)30.29 in (769.3 mm)−0.32 in (−8.1 mm)−1.04%
Sidewall height7.30 in (185.5 mm)6.64 in (168.8 mm)−0.66 in (−16.7 mm)−9.03%
Section width10.43 in (265.0 mm)8.86 in (225.0 mm)−1.57 in (−40.0 mm)−15.09%
Circumference96.15 in (2,442.3 mm)95.15 in (2,416.8 mm)−1.00 in (−25.4 mm)−1.04%
Revolutions per mile659666+7+1.05%
True speed with the speedometer calibrated for 265/70R16
IndicatedActual on 265/70R16Actual on 225/75R17Difference
30 mph30.0 mph29.7 mph−0.3 mph
60 mph60.0 mph59.4 mph−0.6 mph
75 mph75.0 mph74.2 mph−0.8 mph

Ride-height change: 225/75R17 lowers the vehicle by 0.16 in (4.1 mm) at the axle (half the −8.1 mm diameter difference).

225/75R17 is 0.32 in shorter than 265/70R16 and 40 mm narrower, a 1.04% difference in overall diameter.

With the speedometer calibrated for 265/70R16, an indicated 60 mph is actually 59.4 mph on 225/75R17, and revolutions per mile change from 659 to 666.

225/75R17 mounts on a 17-inch wheel, a plus-1 fitment from the 16-inch wheel of 265/70R16.

Size pages

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