175/55R15 tire size
A 175/55R15 tire is 175 mm wide with a 96.3 mm sidewall, 55% of the width, on a 15-inch rim, which puts the whole tire at 573.5 mm, or about 22.6 inches, tall. Our data lists 1 models fitted with it from the factory, mostly hatchbacks.
Overall height
573.5 mm
22.6 in
Sidewall
96.3 mm
55%
Circumference
1,802 mm
Revs per km
555
Actual dimensions of 175/55R15
| Section width | 175 mm (6.9 in) |
| Sidewall height | 96.3 mm (3.79 in) |
| Rim diameter | 15 in (381.0 mm) |
| Overall diameter | 573.5 mm (22.6 in) |
| Circumference | 1,802 mm |
| Revolutions per km | 555 |
| Inch notation (height x width) | 22.6x6.9R15 |
Worked out: sidewall 175 x 0.55 = 96.25 mm, rim 15 x 25.4 = 381 mm, overall 381 + (96.25 x 2) = 573.5 mm, circumference 3.1416 x 573.5 = 1,802 mm. One turn of the tire moves the car about 1.80 m, which is 555 turns per kilometer. New to sidewall codes? See how to read a tire size.
These are nominal figures from the standard formula. Real tires vary slightly by brand and squat a little under the weight of the car.
Cars fitted with 175/55R15 from the factory
Models whose Thai-market specification lists 175/55R15; the source column links to the spec we checked.
| Model | Years | Grades | Source |
|---|---|---|---|
| Mitsubishi Mirage | 2012–present | GLX CVT Limited Edition | headlightmag.com |
Sizes that can replace 175/55R15
Sizes within ±3% of the overall height of 175/55R15. “At 100 km/h” is the real speed when the speedometer reads 100.
| Size | Height | Difference | At 100 km/h | Sidewall | Match | Compare |
|---|---|---|---|---|---|---|
| 195/50R15 | 576.0 mm | +2.5 mm (+0.44%) | 100.4 km/h | 97.5 mm | Very close | Compare |
| 165/65R14 | 570.1 mm | −3.4 mm (−0.59%) | 99.4 km/h | 107.3 mm | Close | Compare |
| 185/60R14 | 577.6 mm | +4.1 mm (+0.71%) | 100.7 km/h | 111.0 mm | Close | Compare |
| 195/45R16 | 581.9 mm | +8.4 mm (+1.46%) | 101.5 km/h | 87.8 mm | Close | Compare |
| 175/65R14 | 583.1 mm | +9.6 mm (+1.67%) | 101.7 km/h | 113.8 mm | Close | Compare |
| 185/55R15 | 584.5 mm | +11.0 mm (+1.92%) | 101.9 km/h | 101.8 mm | Close | Compare |
| 165/70R14 | 586.6 mm | +13.1 mm (+2.28%) | 102.3 km/h | 115.5 mm | Within range | Compare |
- Keeping your wheels, the closest is 195/50R15 at 576.0 mm, +2.5 mm (+0.44%) from the original. With the speedometer on 100 km/h, the car would actually be doing about 100.4 km/h. Ground clearance rises by about 1.3 mm.
- Moving up to 16-inch wheels, the closest height match is 195/45R16 (+1.46%), with the sidewall dropping from 96.3 mm to 87.8 mm.
- Going down to 14-inch wheels, 165/65R14 (−0.59%) is the closest match and raises the sidewall to 107.3 mm.
- A larger or wider tire also changes acceleration, fuel use and steering weight, so look beyond the percentage.
Buying 175/55R15 tires
Passenger tires in this size come in eco, comfort and sport lines. Japanese and European brands usually cost more than Asian ones, and the difference shows in noise, wet braking and tread life.
Check the production date in the DOT code before paying.
Check current prices
Search by brand
Links open marketplace search results; prices change constantly and not every brand makes this size.
Load index and speed rating for 175/55R15
The code after the size on the sidewall, as in 175/55R15 77H, is the load index and speed symbol. The common ratings for this size:
| Version | Index | Per tire | Four tires |
|---|---|---|---|
| Standard load (SL) | 77 | 412 kg | 1,648 kg |
The new tire's load index and speed symbol must be no lower than the door placard, and it only carries its rated load at the correct pressure.
Common speed symbols in this size
H
210 km/h
V
240 km/h
175/55R15 questions
How tall is a 175/55R15 tire?
About 22.6 inches, or 573.5 mm, from top to bottom before it carries weight. Each sidewall is 96.3 mm tall and the tire is 175 mm (6.9 in) wide.
Which cars use 175/55R15 tires?
From Thai-market specifications, 175/55R15 comes on Mitsubishi Mirage.
Can I fit 195/50R15 instead of 175/55R15?
Size-wise, yes: the height differs by +0.44% (+2.5 mm), so an indicated 100 km/h is really about 100.4 km/h. The tread is 20 mm wider. Check rim width and load index first.
How much weight can a 175/55R15 tire carry?
Most standard-load versions carry load index 77: 412 kg per tire, 1,648 kg across four. Look for the number after the size on the sidewall, as in 175/55R15 77H.
Other 15-inch sizes
To compare other sizes yourself, use the tire size calculator; changing rim size, try plus/minus sizing; and see speedometer error by speed.