2026 RAM ProMaster tire size
Most common factory size
LT225/75R16
- Factory sizes
- 1
- Across 25 trims
- Trims with no size
- 72
- Diameter
- 29.29 in
- Revs per mile
- 689
Tire sizes by trim
Source marks: one source
| Size | Trims | Width, mm | Sidewall, % of width | Rim, in | Diameter, in | Sidewall, in | Revs per mile |
|---|---|---|---|---|---|---|---|
| LT225/75R16 | All 25 trims | 225 | 75 | 16 | 29.29 | 6.64 | 689 |
What LT225/75R16 means
| Part | Number | Meaning |
|---|---|---|
| Type | LT | Light truck tire. |
| Width | 225 mm | Tread width. 8.9 in. |
| Sidewall | 75 | Sidewall height is 75% of the width. |
| Construction | R | Radial tire. |
| Rim | 16 in | Fits 16 in wheels. |
Other sizes that fit
Within 3% of the stock diameter. A common shop guideline, not a maker spec.
| Size | Rim, in | Diameter, in | Change | Speedo reads at 60 mph |
|---|---|---|---|---|
| 245/70R16 | 16 | 29.50 | +0.7% | 59.6 mph |
| 255/60R17 | 17 | 29.05 | -0.8% | 60.5 mph |
| 245/65R17 | 17 | 29.54 | +0.9% | 59.5 mph |
| 235/65R17 | 17 | 29.03 | -0.9% | 60.5 mph |
| 235/70R16 | 16 | 28.95 | -1.1% | 60.7 mph |
| 235/75R15 | 15 | 28.88 | -1.4% | 60.9 mph |
| 215/70R17 | 17 | 28.85 | -1.5% | 60.9 mph |
| 235/70R17 | 17 | 29.95 | +2.3% | 58.7 mph |
Checked against 292 factory sizes listed for 2009-2027 US models.
What this cannot tell you
Tire pressure is on the driver door sticker. Not in this data.
Optional wheel packages may differ.
- Two or more sources agree
- One source
- Model-level or estimate
- Sources differ