195/70R15C tire size

A 195/70R15C (C = commercial / van) tire is 25.75 inches (654.0 mm) tall, 7.68 in (195 mm) wide and fits a 15-inch wheel. In inch notation it is roughly a 25.7x7.7R15.

195/70R15C dimensions
Overall diameter	25.75 in	654.0 mm
Section width	7.68 in	195 mm
Sidewall height	5.37 in	136.5 mm
Circumference	80.89 in	2,055 mm
Revolutions	783.3 per mile	486.7 per km
Rim diameter	15 in	381.0 mm

Compare 195/70R15C with another size

Current size

New size

Speed in mphkm/h

Overall diameter difference

−0.46%

60 mph on the speedometer = 59.7 mph actual

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

Ground clearance: −1.5 mm (−0.06 in)
Revolutions: 783 → 787 per mile

195/70R15C 225/60R15

Side-by-side dimensions

	Current	New	Difference	%
Diameter	25.75 in	25.63 in	−0.12 in	−0.46%
Diameter	654.0 mm	651.0 mm	−3.0 mm	−0.46%
Width	7.68 in	8.86 in	+1.18 in	+15.38%
Width	195.0 mm	225.0 mm	+30.0 mm	+15.38%
Sidewall	5.37 in	5.31 in	−0.06 in	−1.10%
Sidewall	136.5 mm	135.0 mm	−1.5 mm	−1.10%
Circumference	80.89 in	80.52 in	−0.37 in	−0.46%
Revs per mile	783.3	786.9	+3.6	+0.46%

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	59.7 mph	−0.3 mph
70 mph	69.7 mph	−0.3 mph
80 mph	79.6 mph	−0.4 mph

Alternative sizes on the same 15-inch wheel

Sizes in use within ±3 % of the overall diameter of 195/70R15C:

Plus and minus sizes for 195/70R15C

Size	Wheel	Diameter	Difference
205/70R14	Minus 1 (14 in)	25.30 in	−1.74%
175/80R14	Minus 1 (14 in)	25.02 in	−2.81%
225/55R16	Plus 1 (16 in)	25.74 in	−0.02%
205/60R16	Plus 1 (16 in)	25.69 in	−0.24%
245/50R16	Plus 1 (16 in)	25.65 in	−0.40%
195/65R16	Plus 1 (16 in)	25.98 in	+0.90%
245/45R17	Plus 2 (17 in)	25.68 in	−0.26%
225/50R17	Plus 2 (17 in)	25.86 in	+0.43%
205/55R17	Plus 2 (17 in)	25.88 in	+0.50%
175/65R17	Plus 2 (17 in)	25.96 in	+0.81%
245/40R18	Plus 3 (18 in)	25.72 in	−0.12%
215/45R18	Plus 3 (18 in)	25.62 in	−0.50%
225/45R18	Plus 3 (18 in)	25.97 in	+0.87%
235/40R18	Plus 3 (18 in)	25.40 in	−1.35%

Vehicles approved with 195/70R15C tires

Models whose Swiss type approval lists 195/70R15C as a standard or optional size (580 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 195/70R15C size

195 — section width in millimetres (7.68 in).
70 — aspect ratio: the sidewall is 70 % of the width, 136.5 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.
C — commercial (van) construction with a higher load capacity at higher pressure.

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.