325 Tire Size in Inches
A 325 tire is 12.8 inches wide (325 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
325 tire overall height (inches)
| Aspect | R15 | R16 | R17 | R18 | R19 | R20 | R21 | R22 |
|---|---|---|---|---|---|---|---|---|
| 325/35 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 |
| 325/40 | 25.2 | 26.2 | 27.2 | 28.2 | 29.2 | 30.2 | 31.2 | 32.2 |
| 325/45 | 26.5 | 27.5 | 28.5 | 29.5 | 30.5 | 31.5 | 32.5 | 33.5 |
| 325/50 | 27.8 | 28.8 | 29.8 | 30.8 | 31.8 | 32.8 | 33.8 | 34.8 |
| 325/55 | 29.1 | 30.1 | 31.1 | 32.1 | 33.1 | 34.1 | 35.1 | 36.1 |
| 325/60 | 30.4 | 31.4 | 32.4 | 33.4 | 34.4 | 35.4 | 36.4 | 37.4 |
| 325/65 | 31.6 | 32.6 | 33.6 | 34.6 | 35.6 | 36.6 | 37.6 | 38.6 |
| 325/70 | 32.9 | 33.9 | 34.9 | 35.9 | 36.9 | 37.9 | 38.9 | 39.9 |
| 325/75 | 34.2 | 35.2 | 36.2 | 37.2 | 38.2 | 39.2 | 40.2 | 41.2 |
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
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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 325 tire in inches?
325 mm ÷ 25.4 = 12.8 inches of section width. The tread itself is somewhat narrower than the section width.
How tall is a 325 tire?
It depends on the aspect ratio and wheel size. For example 325/70R17 is about 34.9 in tall and 325/55R20 about 34.1 in — see the chart.