2026 GMC Acadia tire size
Most common factory size
P255/65R18
- Factory sizes
- 4
- Across 7 trims
- Trims with it
- 2 of 7
- Trims with no size
- 7
- Diameter
- 31.05 in
- Revs per mile
- 650
Tire sizes by trim
Source marks: one source
| Size | Trims | Width, mm | Sidewall, % of width | Rim, in | Diameter, in | Sidewall, in | Revs per mile |
|---|---|---|---|---|---|---|---|
| P255/65R18 | Elevation FWD, Elevation AWD | 255 | 65 | 18 | 31.05 | 6.53 | 650 |
| P255/55R20 | Denali FWD, Denali AWD | 255 | 55 | 20 | 31.04 | 5.52 | 650 |
| P245/45R22 | Denali Ultimate FWD, Denali Ultimate AWD | 245 | 45 | 22 | 30.68 | 4.34 | 657 |
| P265/65R18 | AT4 AWD | 265 | 65 | 18 | 31.56 | 6.78 | 639 |
What P255/65R18 means
| Part | Number | Meaning |
|---|---|---|
| Type | P | Passenger car tire. |
| Width | 255 mm | Tread width. 10.0 in. |
| Sidewall | 65 | Sidewall height is 65% 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 |
|---|---|---|---|---|
| 255/70R17 | 17 | 31.06 | +0.0% | 60.0 mph |
| 255/60R19 | 19 | 31.05 | -0.0% | 60.0 mph |
| 235/65R19 | 19 | 31.03 | -0.1% | 60.0 mph |
| 275/60R18 | 18 | 30.99 | -0.2% | 60.1 mph |
| 275/55R19 | 19 | 30.91 | -0.5% | 60.3 mph |
| 285/60R18 | 18 | 31.46 | +1.3% | 59.2 mph |
| 245/75R17 | 17 | 31.47 | +1.3% | 59.2 mph |
| 245/70R18 | 18 | 31.50 | +1.5% | 59.1 mph |
| Size | Rim, in | Diameter, in | Change | Speedo reads at 60 mph |
|---|---|---|---|---|
| 255/60R19 | 19 | 31.05 | +0.0% | 60.0 mph |
| 255/50R21 | 21 | 31.04 | -0.0% | 60.0 mph |
| 235/65R19 | 19 | 31.03 | -0.1% | 60.0 mph |
| 285/45R21 | 21 | 31.10 | +0.2% | 59.9 mph |
| 235/60R20 | 20 | 31.10 | +0.2% | 59.9 mph |
| 275/55R19 | 19 | 30.91 | -0.4% | 60.3 mph |
| 285/50R20 | 20 | 31.22 | +0.6% | 59.7 mph |
| 275/50R20 | 20 | 30.83 | -0.7% | 60.4 mph |
| Size | Rim, in | Diameter, in | Change | Speedo reads at 60 mph |
|---|---|---|---|---|
| 275/40R22 | 22 | 30.66 | -0.1% | 60.0 mph |
| 275/45R21 | 21 | 30.74 | +0.2% | 59.9 mph |
| 275/35R23 | 23 | 30.58 | -0.3% | 60.2 mph |
| 285/35R23 | 23 | 30.85 | +0.6% | 59.7 mph |
| 265/45R21 | 21 | 30.39 | -0.9% | 60.6 mph |
| 285/40R22 | 22 | 30.98 | +1.0% | 59.4 mph |
| 265/40R22 | 22 | 30.35 | -1.1% | 60.7 mph |
| 255/40R23 | 23 | 31.03 | +1.1% | 59.3 mph |
| Size | Rim, in | Diameter, in | Change | Speedo reads at 60 mph |
|---|---|---|---|---|
| 265/70R17 | 17 | 31.61 | +0.1% | 59.9 mph |
| 245/70R18 | 18 | 31.50 | -0.2% | 60.1 mph |
| 245/75R17 | 17 | 31.47 | -0.3% | 60.2 mph |
| 285/60R18 | 18 | 31.46 | -0.3% | 60.2 mph |
| 235/80R17 | 17 | 31.80 | +0.8% | 59.5 mph |
| 255/65R19 | 19 | 32.05 | +1.5% | 59.1 mph |
| 255/70R18 | 18 | 32.06 | +1.6% | 59.1 mph |
| 255/75R17 | 17 | 32.06 | +1.6% | 59.1 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