175/80R14 tire size

A 175/80R14 tire is 25.02 inches (635.6 mm) tall, 6.89 in (175 mm) wide and fits a 14-inch wheel. In inch notation it is roughly a 25.0x6.9R14.

175/80R14 dimensions
Overall diameter	25.02 in	635.6 mm
Section width	6.89 in	175 mm
Sidewall height	5.51 in	140.0 mm
Circumference	78.61 in	1,997 mm
Revolutions	806.0 per mile	500.8 per km
Rim diameter	14 in	355.6 mm

Compare 175/80R14 with another size

Current size

New size

Speed in mphkm/h

Overall diameter difference

−0.39%

60 mph on the speedometer = 59.8 mph actual

Within the ±3 % diameter range most tire fitters accept.

Ground clearance: −1.3 mm (−0.05 in)
Revolutions: 806 → 809 per mile

175/80R14 185/75R14

Side-by-side dimensions

	Current	New	Difference	%
Diameter	25.02 in	24.93 in	−0.10 in	−0.39%
Diameter	635.6 mm	633.1 mm	−2.5 mm	−0.39%
Width	6.89 in	7.28 in	+0.39 in	+5.71%
Width	175.0 mm	185.0 mm	+10.0 mm	+5.71%
Sidewall	5.51 in	5.46 in	−0.05 in	−0.89%
Sidewall	140.0 mm	138.7 mm	−1.3 mm	−0.89%
Circumference	78.61 in	78.30 in	−0.31 in	−0.39%
Revs per mile	806.0	809.1	+3.2	+0.39%

Speedometer error

Speedometer shows	Actual speed	Difference
20 mph	19.9 mph	−0.1 mph
30 mph	29.9 mph	−0.1 mph
40 mph	39.8 mph	−0.2 mph
50 mph	49.8 mph	−0.2 mph
60 mph	59.8 mph	−0.2 mph
70 mph	69.7 mph	−0.3 mph
80 mph	79.7 mph	−0.3 mph

Alternative sizes on the same 14-inch wheel

Sizes in use within ±3 % of the overall diameter of 175/80R14:

Plus and minus sizes for 175/80R14

Size	Wheel	Diameter	Difference
195/65R15	Plus 1 (15 in)	24.98 in	−0.17%
215/60R15	Plus 1 (15 in)	25.16 in	+0.53%
185/70R15	Plus 1 (15 in)	25.20 in	+0.69%
225/55R15	Plus 1 (15 in)	24.74 in	−1.12%
205/55R16	Plus 2 (16 in)	24.88 in	−0.58%
225/50R16	Plus 2 (16 in)	24.86 in	−0.66%
195/60R16	Plus 2 (16 in)	25.21 in	+0.76%
185/60R16	Plus 2 (16 in)	24.74 in	−1.13%
205/50R17	Plus 3 (17 in)	25.07 in	+0.19%
225/45R17	Plus 3 (17 in)	24.97 in	−0.20%
215/45R17	Plus 3 (17 in)	24.62 in	−1.62%
195/55R17	Plus 3 (17 in)	25.44 in	+1.68%

Vehicles approved with 175/80R14 tires

Models whose Swiss type approval lists 175/80R14 as a standard or optional size (79 approvals in total). Always check your own vehicle's placard or papers.

Source: Swiss Federal Roads Office (FEDRO/ASTRA), open government data. Original data (downloaded 2026-09-29). Data processed by us; errors in processing are ours, not the publisher's.

Nearby 14-inch sizes

Reading the 175/80R14 size

175 — section width in millimetres (6.89 in).
80 — aspect ratio: the sidewall is 80 % of the width, 140.0 mm.
R — radial construction (ZR on the sidewall means a high-speed rated radial; the dimensions are the same).
14 — fits a 14-inch diameter wheel.

The load index and speed rating (for example 91V) follow the size on the sidewall. They must meet at least the values on your vehicle's tire placard.