175/70R13 vs 165/70R14

165/70R14 is 0.45 in (11.4 mm) taller than 175/70R13, a +1.98% diameter difference. With the speedometer set for 175/70R13, an indicated 60 mph is 61.2 mph on 165/70R14.

Is this a safe swap?

Diameter difference +1.98%: within the ±3% guideline

By overall diameter alone, 165/70R14 falls inside the ±3% range commonly used as a guideline when replacing 175/70R13. This check uses diameter only. It does not assess load index, speed rating, wheel width or clearance.

Side profile and tread width, drawn to the same scale.

175/70R13 vs 165/70R14 differences
Measurement	175/70R13	165/70R14	Difference	% diff
Overall diameter	22.65 in (575.2 mm)	23.09 in (586.6 mm)	+0.45 in (+11.4 mm)	+1.98%
Sidewall height	4.82 in (122.5 mm)	4.55 in (115.5 mm)	−0.28 in (−7.0 mm)	−5.71%
Section width	6.89 in (175.0 mm)	6.50 in (165.0 mm)	−0.39 in (−10.0 mm)	−5.71%
Circumference	71.14 in (1,807.0 mm)	72.55 in (1,842.9 mm)	+1.41 in (+35.8 mm)	+1.98%
Revolutions per mile	891	873	−17	−1.94%

True speed with the speedometer calibrated for 175/70R13
Indicated	Actual on 175/70R13	Actual on 165/70R14	Difference
30 mph	30.0 mph	30.6 mph	+0.6 mph
60 mph	60.0 mph	61.2 mph	+1.2 mph
75 mph	75.0 mph	76.5 mph	+1.5 mph

Ride-height change: 165/70R14 raises the vehicle by 0.22 in (5.7 mm) at the axle (half the +11.4 mm diameter difference).

165/70R14 is 0.45 in taller than 175/70R13 and 10 mm narrower, a 1.98% difference in overall diameter.

With the speedometer calibrated for 175/70R13, an indicated 60 mph is actually 61.2 mph on 165/70R14, and revolutions per mile change from 891 to 873.

165/70R14 mounts on a 14-inch wheel, a plus-1 fitment from the 13-inch wheel of 175/70R13.

Size pages

Other comparisons with 175/70R13

Other comparisons with 165/70R14

Source: Calculated from standard tire geometry formulas. Verified 2026-09-27. How these numbers are calculated.