255 Tire Size in Inches
A 255 tire is 10.04 inches wide (255 mm ÷ 25.4). Its overall height depends on the aspect ratio and wheel size — the chart below works out every common combination.
Calculated from the size designation · Updated 2026-11-05 · By CarWhere Research
255 tire overall height (inches)
| Aspect | R15 | R16 | R17 | R18 | R19 | R20 | R21 | R22 |
|---|---|---|---|---|---|---|---|---|
| 255/35 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 |
| 255/40 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 |
| 255/45 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 |
| 255/50 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | 32 |
| 255/55 | 26 | 27 | 28 | 29 | 30 | 31 | 32 | 33 |
| 255/60 | 27 | 28 | 29 | 30 | 31 | 32 | 33 | 34 |
| 255/65 | 28.1 | 29.1 | 30.1 | 31.1 | 32.1 | 33.1 | 34.1 | 35.1 |
| 255/70 | 29.1 | 30.1 | 31.1 | 32.1 | 33.1 | 34.1 | 35.1 | 36.1 |
| 255/75 | 30.1 | 31.1 | 32.1 | 33.1 | 34.1 | 35.1 | 36.1 | 37.1 |
Calculated nominal dimensions. Actual measured size varies by tire model and rim width. Linked values are factory sizes on vehicles in our data.
Other widths
Check the exact vehicle, not just the model
Trim, package and production changes all move these numbers. Decode the 17-character VIN with the free VIN decoder to confirm the engine and trim, or see the federal engine and MPG specs. Shopping? Browse live inventory and what buyers actually paid.
Frequently asked questions
How wide is a 255 tire in inches?
255 mm ÷ 25.4 = 10.04 inches of section width. The tread itself is somewhat narrower than the section width.
How tall is a 255 tire?
It depends on the aspect ratio and wheel size. For example 255/70R17 is about 31.1 in tall and 255/55R20 about 31 in — see the chart.