175/65R14 Tire Size in Inches
Diameter, width, sidewall and the closest equivalent sizes, computed from the size code.
| Measurement | Inches | Millimetres |
|---|---|---|
| Overall diameter | 22.96 | 583 |
| Section width | 6.89 | 175 |
| Sidewall height | 4.48 | 113.8 |
| Wheel diameter | 14 | 356 |
| Circumference | 72.1 | 1832 |
| Revolutions per mile | 879 (546 per km) | |
What 175/65R14 means
175 is the section width in millimetres (6.9 in). 65 is the aspect ratio: the sidewall is 65% as tall as the tire is wide, which works out to 113.8 mm or 4.5 in. R14 is a radial tire for a 14-inch wheel.
Overall diameter is the wheel plus two sidewalls: 14 + 2 × 4.48 = 23.0 inches. These are the nominal dimensions every maker builds to; a real 175/65R14 can measure a few tenths of an inch differently by model and inflation.
Closest equivalent sizes
Common sizes within the usual 3% of 175/65R14's overall diameter. Confirm load index, speed rating and rim width before swapping.
| Size | Diameter | Width | Change | Speedometer at 60 |
|---|---|---|---|---|
| 185/55R15 new wheels | 23.0 in | 7.3 in | +0.2% | really 60.1 mph |
| 185/60R14 | 22.7 in | 7.3 in | -0.9% | really 59.4 mph |
| 195/60R14 | 23.2 in | 7.7 in | +1.1% | really 60.7 mph |
| 205/45R16 new wheels | 23.3 in | 8.1 in | +1.3% | really 60.8 mph |
| 195/55R15 new wheels | 23.4 in | 7.7 in | +2.1% | really 61.3 mph |
| 205/40R17 new wheels | 23.5 in | 8.1 in | +2.2% | really 61.3 mph |
Speedometer if you switch to 185/60R14
Your speedometer stays calibrated for 175/65R14. With a shorter tire you travel slower than it shows.
| Speedometer reads | True speed |
|---|---|
| 30 mph | 29.7 mph |
| 45 mph | 44.6 mph |
| 55 mph | 54.5 mph |
| 65 mph | 64.4 mph |
| 75 mph | 74.3 mph |
Shop 175/65R14 tires
Check the load index and speed rating on your door-jamb placard before you buy, especially for LT tires used for towing.
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Frequently Asked Questions
Last updated: October 2, 2026