2020 Chevrolet Suburban Tire Size & Pressure

Quick answer

• OEM Tire Size: 265/65R18, 275/55R20, 285/45R22
• Recommended Cold Tire Pressure (Door Placard): 35 PSI (all tires)
• Bolt Pattern: 6x139.7mm
• Wheel Size: 18x8.5", 20x9", 22x9"
• Load Index/Speed Rating: Varies by tire size and trim. Typically 113S or 116H.
• Spare Tire Size: 265/70R17 (or full-size spare matching OEM wheel/tire package for certain trims)
• TPMS Frequency: 315 MHz

Tire sizes by trim

The 2020 Chevrolet Suburban offered a range of tire and wheel options depending on the trim level. It's important to note that wheel diameter and tire aspect ratio will change, but the overall tire diameter remains relatively consistent to maintain speedometer accuracy and vehicle performance.

Recommended replacement tires

When replacing tires on your 2020 Chevrolet Suburban, consider tires that offer a good balance of ride comfort, handling, and longevity, suitable for an SUV of its size and capability. Here are a few popular options across different price tiers:

• Michelin Defender LTX M/S (Premium): A popular choice for SUVs and trucks, known for its excellent all-season traction, long tread life, and comfortable ride. Expect to pay around $200-$280 per tire.
• Goodyear Wrangler SR-A (Mid-Range): Often an OEM tire, this option provides good all-season performance and a quiet ride. Price typically ranges from $170-$230 per tire.
• Kumho Crugen HT51 (Value): A solid all-season highway tire that offers good performance in various conditions at a more accessible price point. Generally costs between $140-$190 per tire.

When to inflate to max load psi

The 2020 Chevrolet Suburban, while a large SUV, is not typically classified as a "heavy-duty (HD) truck" in the same vein as a 2500/3500 series pickup that would require inflation to max load PSI for heavy hauling. For the vast majority of driving conditions, you should always adhere to the recommended cold tire pressure listed on your vehicle's door jamb placard (35 PSI for all tires).

Inflating to the maximum PSI molded on the tire's sidewall should generally be avoided unless you are operating the vehicle at its absolute maximum gross vehicle weight rating (GVWR) for extended periods, and even then, consultation with your vehicle's owner's manual or a tire professional is recommended. Overinflating can lead to a harsher ride, premature tire wear in the center of the tread, and potentially compromised handling.

Lug nut torque & pattern

Proper lug nut torque is crucial for wheel security and to prevent issues like warped brake rotors. For the 2020 Chevrolet Suburban, the recommended lug nut torque specification is 140 lb-ft (190 Nm). Always use a torque wrench to ensure accurate tightening.

When tightening lug nuts, follow a star or criss-cross pattern. This ensures even pressure on the wheel hub and prevents the wheel from seating improperly. Start by hand-tightening all lug nuts, then progressively tighten them to the specified torque in the correct pattern.

Common tire issues for this vehicle

Owners of the 2020 Chevrolet Suburban may experience some common tire issues, many of which are typical for large SUVs:

• Uneven Tire Wear: Given the Suburban's weight and suspension design, proper tire rotation and alignment are critical. Neglecting these can lead to feathering, cupping, or excessive wear on the inner or outer edges of the tires. Regular alignments (at least every other year or after suspension work) and rotations every 5,000-7,500 miles can mitigate this.
• TPMS Sensor Issues: The 315 MHz TPMS sensors can occasionally malfunction due to battery degradation or impact. If your TPMS light comes on, it's important to check tire pressures manually first, then have the system diagnosed by a professional if the problem persists after correcting pressure.
• Road Noise: Due to the vehicle's size and the types of tires often fitted (especially more aggressive all-terrain or worn highway tires), road noise can sometimes be a concern. Choosing tires known for their quiet ride can help, as can ensuring proper inflation and rotation.
• Pothole Damage: Large, heavy SUVs are susceptible to tire and wheel damage from potholes. Always be vigilant for road hazards. Impact damage can lead to bulges in the tire sidewall, bent wheels, or even internal tire damage not immediately visible.

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