215/80R15 tire size

A 215/80R15 tire is 28.54 inches (725.0 mm) tall, 8.46 in (215 mm) wide and fits a 15-inch wheel. In inch notation it is roughly a 28.5x8.5R15 — a "29-inch" tire.

215/80R15 dimensions
Overall diameter	28.54 in	725.0 mm
Section width	8.46 in	215 mm
Sidewall height	6.77 in	172.0 mm
Circumference	89.67 in	2,278 mm
Revolutions	706.6 per mile	439.0 per km
Rim diameter	15 in	381.0 mm

Compare 215/80R15 with another size

Current size

New size

Speed in mphkm/h

Overall diameter difference

−0.90%

60 mph on the speedometer = 59.5 mph actual

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

Ground clearance: −3.3 mm (−0.13 in)
Revolutions: 707 → 713 per mile

215/80R15 225/75R15

Side-by-side dimensions

	Current	New	Difference	%
Diameter	28.54 in	28.29 in	−0.26 in	−0.90%
Diameter	725.0 mm	718.5 mm	−6.5 mm	−0.90%
Width	8.46 in	8.86 in	+0.39 in	+4.65%
Width	215.0 mm	225.0 mm	+10.0 mm	+4.65%
Sidewall	6.77 in	6.64 in	−0.13 in	−1.89%
Sidewall	172.0 mm	168.8 mm	−3.3 mm	−1.89%
Circumference	89.67 in	88.87 in	−0.80 in	−0.90%
Revs per mile	706.6	713.0	+6.4	+0.90%

Speedometer error

Speedometer shows	Actual speed	Difference
20 mph	19.8 mph	−0.2 mph
30 mph	29.7 mph	−0.3 mph
40 mph	39.6 mph	−0.4 mph
50 mph	49.6 mph	−0.4 mph
60 mph	59.5 mph	−0.5 mph
70 mph	69.4 mph	−0.6 mph
80 mph	79.3 mph	−0.7 mph

Alternative sizes on the same 15-inch wheel

Sizes in use within ±3 % of the overall diameter of 215/80R15:

Plus and minus sizes for 215/80R15

Size	Wheel	Diameter	Difference
225/70R16	Plus 1 (16 in)	28.40 in	−0.50%
215/75R16	Plus 1 (16 in)	28.70 in	+0.54%
205/80R16	Plus 1 (16 in)	28.91 in	+1.30%
235/70R16	Plus 1 (16 in)	28.95 in	+1.43%
225/65R17	Plus 2 (17 in)	28.52 in	−0.10%
235/60R17	Plus 2 (17 in)	28.10 in	−1.54%
235/65R17	Plus 2 (17 in)	29.03 in	+1.70%
255/55R17	Plus 2 (17 in)	28.04 in	−1.75%
225/60R18	Plus 3 (18 in)	28.63 in	+0.30%
235/55R18	Plus 3 (18 in)	28.18 in	−1.28%
215/60R18	Plus 3 (18 in)	28.16 in	−1.35%
255/55R18	Plus 3 (18 in)	29.04 in	+1.75%

Vehicles approved with 215/80R15 tires

Models whose Swiss type approval lists 215/80R15 as a standard or optional size (30 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 15-inch sizes

Reading the 215/80R15 size

215 — section width in millimetres (8.46 in).
80 — aspect ratio: the sidewall is 80 % of the width, 172.0 mm.
R — radial construction (ZR on the sidewall means a high-speed rated radial; the dimensions are the same).
15 — fits a 15-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.