2021 GMC Acadia Tire Size & Pressure

Quick Answer

• OEM Tire Size: 235/65R17, 235/60R18, 235/55R20
• Recommended Cold Tire Pressure (Door Placard): 35-36 PSI (front and rear, depending on trim and tire size)
• Bolt Pattern: 5x120mm
• Wheel Size: 17x7.5J, 18x7.5J, 20x8J
• Load Index/Speed Rating: Varies by tire size (e.g., 104H, 102H)
• Spare Tire Size: T165/90R18 (compact spare)
• TPMS Frequency: 315 MHz

Tire Sizes by Trim

Recommended Replacement Tires

Choosing the right replacement tires for your 2021 GMC Acadia is crucial for maintaining its performance, safety, and fuel economy. Here are a few popular options across different price tiers, suitable for various driving conditions.

Michelin Defender LTX M/S (Premium Tier)

These tires are a popular choice for SUVs like the Acadia, offering excellent all-season traction, a quiet and comfortable ride, and impressive tread life. They provide reliable grip in wet and dry conditions and are known for their durability. Expect to pay around $200-$250 per tire, depending on size.

Continental CrossContact LX25 (Mid-Range Tier)

The Continental CrossContact LX25 is another strong contender for the Acadia, balancing comfort, performance, and value. These tires deliver confident handling, good wet traction, and a quiet ride. They are a great all-around option for everyday driving. Prices typically range from $170-$220 per tire.

Cooper Discoverer SRX (Value Tier)

For a more budget-friendly option without sacrificing too much performance, the Cooper Discoverer SRX is a solid choice. These all-season tires offer a comfortable ride and dependable traction in various conditions, making them a good value for the price. You can usually find these for $140-$180 per tire.

When to Inflate to Max Load PSI

Your 2021 GMC Acadia is not a heavy-duty truck, and therefore, you generally should not inflate your tires to the "max load" PSI indicated on the tire's sidewall. The max load PSI is the maximum pressure the tire can safely hold to carry its maximum weight capacity.

For your Acadia, always refer to the recommended cold tire inflation pressure found on the driver's side door placard. This pressure is specifically chosen by GMC to provide the best balance of ride comfort, handling, tread life, and fuel efficiency for your vehicle under normal driving conditions. Over-inflating your tires can lead to a harsh ride, premature wear on the center of the tread, and potentially compromise handling.

Lug Nut Torque & Pattern

The correct lug nut torque is vital for ensuring your wheels are securely fastened and to prevent issues like stripped studs or warped rotors. Always use a torque wrench to tighten lug nuts to the manufacturer's specifications.

• Lug Nut Torque: 140 lb-ft (190 Nm)
• Lug Nut Pattern: Start by hand-tightening all lug nuts. Then, tighten them in a star or crisscross pattern to the specified torque. This ensures the wheel is seated evenly against the hub.

Common Tire Issues for This Vehicle

Owners of the 2021 GMC Acadia may occasionally encounter some common tire-related issues, similar to many other SUVs.

• Uneven Tire Wear: This can be caused by improper tire pressure, lack of regular tire rotations, or an out-of-spec wheel alignment. Regularly checking tire pressure and adhering to the recommended rotation schedule (typically every 5,000-7,500 miles) can help mitigate this.
• TPMS Sensor Malfunctions: The Tire Pressure Monitoring System (TPMS) sensors can sometimes fail due to battery depletion (they typically last 5-10 years) or damage. This will trigger a warning light on your dashboard. If a sensor fails, it will need to be replaced and reprogrammed.
• Road Hazard Damage: Potholes, curbs, and debris can cause punctures, bulges, or cuts in tires. While unavoidable at times, driving cautiously and being aware of road conditions can help reduce the risk. It's always a good idea to inspect your tires periodically for any signs of damage.
• Vibrations: Vibrations felt through the steering wheel or seat can often be attributed to unbalanced tires or an out-of-round tire. Having your tires balanced when they are new and re-balanced if you notice vibrations can resolve this.

Need new tires? Find a trusted shop on Repairius.