2023 Buick Encore GX tire size
Most common factory size
P225/55R18
- Factory sizes
- 1
- Across 6 trims
- Diameter
- 27.74 in
- Revs per mile
- 727
Tire sizes by trim
Source marks: one source
| Size | Trims | Width, mm | Sidewall, % of width | Rim, in | Diameter, in | Sidewall, in | Revs per mile |
|---|---|---|---|---|---|---|---|
| P225/55R18 | All 6 trims | 225 | 55 | 18 | 27.74 | 4.87 | 727 |
What P225/55R18 means
| Part | Number | Meaning |
|---|---|---|
| Type | P | Passenger car tire. |
| Width | 225 mm | Tread width. 8.9 in. |
| Sidewall | 55 | Sidewall height is 55% of the width. |
| Construction | R | Radial tire. |
| Rim | 18 in | Fits 18 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 |
|---|---|---|---|---|
| 245/45R19 | 19 | 27.68 | -0.2% | 60.1 mph |
| 275/40R19 | 19 | 27.66 | -0.3% | 60.2 mph |
| 245/50R18 | 18 | 27.65 | -0.4% | 60.2 mph |
| 225/60R17 | 17 | 27.63 | -0.4% | 60.2 mph |
| 245/55R17 | 17 | 27.61 | -0.5% | 60.3 mph |
| 315/40R18 | 18 | 27.92 | +0.6% | 59.6 mph |
| 155/70R19 | 19 | 27.54 | -0.7% | 60.4 mph |
| 215/65R17 | 17 | 28.00 | +0.9% | 59.4 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