205/60R14 vs 155/80R14

155/80R14 is 0.08 in (2.0 mm) taller than 205/60R14, a +0.33% diameter difference. With the speedometer set for 205/60R14, an indicated 60 mph is 60.2 mph on 155/80R14.

Is this a safe swap?

Diameter difference +0.33%: under 1%

By overall diameter alone, 155/80R14 is a near match for 205/60R14; 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.

205/60R14 vs 155/80R14 differences
Measurement	205/60R14	155/80R14	Difference	% diff
Overall diameter	23.69 in (601.6 mm)	23.76 in (603.6 mm)	+0.08 in (+2.0 mm)	+0.33%
Sidewall height	4.84 in (123.0 mm)	4.88 in (124.0 mm)	+0.04 in (+1.0 mm)	+0.81%
Section width	8.07 in (205.0 mm)	6.10 in (155.0 mm)	−1.97 in (−50.0 mm)	−24.39%
Circumference	74.41 in (1,890.0 mm)	74.66 in (1,896.3 mm)	+0.25 in (+6.3 mm)	+0.33%
Revolutions per mile	852	849	−3	−0.33%

True speed with the speedometer calibrated for 205/60R14
Indicated	Actual on 205/60R14	Actual on 155/80R14	Difference
30 mph	30.0 mph	30.1 mph	+0.1 mph
60 mph	60.0 mph	60.2 mph	+0.2 mph
75 mph	75.0 mph	75.2 mph	+0.2 mph

Ride-height change: 155/80R14 raises the vehicle by 0.04 in (1.0 mm) at the axle (half the +2.0 mm diameter difference).

155/80R14 is 0.08 in taller than 205/60R14 and 50 mm narrower, a 0.33% difference in overall diameter.

With the speedometer calibrated for 205/60R14, an indicated 60 mph is actually 60.2 mph on 155/80R14, and revolutions per mile change from 852 to 849.

Both sizes mount on 14-inch wheels.

Size pages

Other comparisons with 205/60R14

Other comparisons with 155/80R14

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