155/70R14 tire size

A 155/70R14 tire is 22.54 inches (572.6 mm) tall, 6.10 in (155 mm) wide and fits a 14-inch wheel. In inch notation it is roughly a 22.5x6.1R14.

155/70R14 dimensions
Overall diameter	22.54 in	572.6 mm
Section width	6.10 in	155 mm
Sidewall height	4.27 in	108.5 mm
Circumference	70.82 in	1,799 mm
Revolutions	894.6 per mile	555.9 per km
Rim diameter	14 in	355.6 mm

Compare 155/70R14 with another size

Current size

New size

Speed in mphkm/h

Overall diameter difference

−0.44%

60 mph on the speedometer = 59.7 mph actual

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

Ground clearance: −1.3 mm (−0.05 in)
Revolutions: 895 → 899 per mile

155/70R14 165/65R14

Side-by-side dimensions

	Current	New	Difference	%
Diameter	22.54 in	22.44 in	−0.10 in	−0.44%
Diameter	572.6 mm	570.1 mm	−2.5 mm	−0.44%
Width	6.10 in	6.50 in	+0.39 in	+6.45%
Width	155.0 mm	165.0 mm	+10.0 mm	+6.45%
Sidewall	4.27 in	4.22 in	−0.05 in	−1.15%
Sidewall	108.5 mm	107.2 mm	−1.3 mm	−1.15%
Circumference	70.82 in	70.51 in	−0.31 in	−0.44%
Revs per mile	894.6	898.6	+3.9	+0.44%

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	79.7 mph	−0.3 mph

Alternative sizes on the same 14-inch wheel

Sizes in use within ±3 % of the overall diameter of 155/70R14:

Plus and minus sizes for 155/70R14

Size	Wheel	Diameter	Difference
175/70R13	Minus 1 (13 in)	22.65 in	+0.45%
205/60R13	Minus 1 (13 in)	22.69 in	+0.63%
155/80R13	Minus 1 (13 in)	22.76 in	+0.98%
145/80R13	Minus 1 (13 in)	22.13 in	−1.82%
175/55R15	Plus 1 (15 in)	22.58 in	+0.16%
135/70R15	Plus 1 (15 in)	22.44 in	−0.45%
145/65R15	Plus 1 (15 in)	22.42 in	−0.54%
195/50R15	Plus 1 (15 in)	22.68 in	+0.59%
175/50R16	Plus 2 (16 in)	22.89 in	+1.54%
195/45R16	Plus 2 (16 in)	22.91 in	+1.62%
195/40R17	Plus 3 (17 in)	23.14 in	+2.65%

Vehicles approved with 155/70R14 tires

Models whose Swiss type approval lists 155/70R14 as a standard or optional size (12 approvals in total). Always check your own vehicle's placard or papers.

Chevrolet Spark

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 155/70R14 size

155 — section width in millimetres (6.10 in).
70 — aspect ratio: the sidewall is 70 % of the width, 108.5 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.