155/80R13 vs 175/65R14

175/65R14 is 0.19 in (4.9 mm) taller than 155/80R13, a +0.85% diameter difference. With the speedometer set for 155/80R13, an indicated 60 mph is 60.5 mph on 175/65R14.

Is this a safe swap?

Diameter difference +0.85%: under 1%

By overall diameter alone, 175/65R14 is a near match for 155/80R13; the speedometer changes by less than 1%. 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.

155/80R13 vs 175/65R14 differences
Measurement	155/80R13	175/65R14	Difference	% diff
Overall diameter	22.76 in (578.2 mm)	22.96 in (583.1 mm)	+0.19 in (+4.9 mm)	+0.85%
Sidewall height	4.88 in (124.0 mm)	4.48 in (113.8 mm)	−0.40 in (−10.2 mm)	−8.27%
Section width	6.10 in (155.0 mm)	6.89 in (175.0 mm)	+0.79 in (+20.0 mm)	+12.90%
Circumference	71.51 in (1,816.5 mm)	72.12 in (1,831.9 mm)	+0.61 in (+15.4 mm)	+0.85%
Revolutions per mile	886	879	−7	−0.84%

True speed with the speedometer calibrated for 155/80R13
Indicated	Actual on 155/80R13	Actual on 175/65R14	Difference
30 mph	30.0 mph	30.3 mph	+0.3 mph
60 mph	60.0 mph	60.5 mph	+0.5 mph
75 mph	75.0 mph	75.6 mph	+0.6 mph

Ride-height change: 175/65R14 raises the vehicle by 0.10 in (2.4 mm) at the axle (half the +4.9 mm diameter difference).

175/65R14 is 0.19 in taller than 155/80R13 and 20 mm wider, a 0.85% difference in overall diameter.

With the speedometer calibrated for 155/80R13, an indicated 60 mph is actually 60.5 mph on 175/65R14, and revolutions per mile change from 886 to 879.

175/65R14 mounts on a 14-inch wheel, a plus-1 fitment from the 13-inch wheel of 155/80R13.

Size pages

Other comparisons with 155/80R13

Other comparisons with 175/65R14

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