What is the overall diameter of a 175/65R14 tire?

A 175/65R14 tire is about 22.96″ (583 mm) in overall diameter, with a sidewall height of 113.8 mm and a circumference of 72.12″.

How many revolutions per mile does a 175/65R14 tire turn?

A 175/65R14 turns roughly 879 revolutions per mile (546 per kilometre). This is the number that determines speedometer and odometer accuracy when you change tire size.

What do the numbers in 175/65R14 mean?

175 is the tread width in millimetres, 65 is the aspect ratio — the sidewall height as a percentage of the tread width — and 14 is the wheel diameter in inches. So the sidewall is 175 × 65% = 113.8 mm tall.

175/65R14

Overall diameter

22.96″

583 mm

Sidewall height

4.48″

113.8 mm

Tread width

175 mm

6.9″

Circumference

72.12″

6.0 ft

Revs per mile

879

546 per km

Wheel diameter

14″

aspect ratio 65%

Compare 175/65R14 in the tool Compare with a custom size

Cross-section

Overall diameter: 22.96″
Sidewall (each side): 4.48″
Wheel: 14″

175/65R14 compared with other sizes

All 9 practical swaps involving 175/65R14 — diameter change, speedometer impact and a fit verdict for each.

175/65R14 → 175/65R15

175/65R15

Diameter −4.2% · Marginal fit — proceed with care

175/65R14 → 185/60R15

185/60R15

Diameter −3.3% · Marginal fit — proceed with care

175/65R14 → 185/55R16

185/55R16

Diameter −4.4% · Marginal fit — proceed with care

175/65R14 → 195/50R16

195/50R16

Diameter −3.0% · Marginal fit — proceed with care

175/65R15 → 175/65R14

175/65R15

Diameter +4.4% · Marginal fit — proceed with care

195/50R16 → 175/65R14

195/50R16

Diameter +3.1% · Marginal fit — proceed with care

185/60R15 → 175/65R14

185/60R15

Diameter +3.4% · Marginal fit — proceed with care

185/55R16 → 175/65R14

185/55R16

Diameter +4.6% · Marginal fit — proceed with care

195/60R15 → 175/65R14

195/60R15

Diameter +5.5% · Not recommended

Common questions

What is the overall diameter of a 175/65R14 tire?: A 175/65R14 tire is about 22.96″ (583 mm) in overall diameter, with a sidewall height of 113.8 mm and a circumference of 72.12″.
How many revolutions per mile does a 175/65R14 tire turn?: A 175/65R14 turns roughly 879 revolutions per mile (546 per kilometre). This is the number that determines speedometer and odometer accuracy when you change tire size.
What do the numbers in 175/65R14 mean?: 175 is the tread width in millimetres, 65 is the aspect ratio — the sidewall height as a percentage of the tread width — and 14 is the wheel diameter in inches. So the sidewall is 175 × 65% = 113.8 mm tall.