2023 GMC Sierra 2500HD Tire Size, Pressure, & Wheel Specs

As an ASE-certified master technician, I regularly work on heavy-duty trucks like the 2023 GMC Sierra 2500HD. Knowing the exact tire size, load rating, and correct inflation pressures is critical for safety, especially when you are towing or hauling heavy payloads. Below is the comprehensive tire and wheel specification guide for your 2023 Sierra 2500HD.

Quick answer

• OEM Tire Size: LT245/75R17, LT275/70R18, or LT275/65R20 (depending on trim)
• Recommended Cold Tire Pressure: 60 PSI Front / 70–80 PSI Rear (check driver's door placard for your specific configuration)
• Bolt Pattern: 8x180
• Wheel Size: 17x7.5, 18x8, or 20x8.5 (Offset: ~44mm)
• Load Index / Speed Rating: 121/118S to 126/123R (Load Range E / 10-ply rated)
• Spare Tire Size: Matches OEM diameter (typically LT245/75R17 or LT275/70R18)
• TPMS Frequency: 433 MHz

Tire sizes by trim

The 2023 GMC Sierra 2500HD offers several wheel and tire packages depending on the trim level and optional equipment packages (like the AT4 or Denali).

Note: Always verify your specific tire size on the sidewall before purchasing replacements, as dealership add-ons can alter wheel sizes.

Recommended replacement tires

When you drive a heavy-duty truck, you need Load Range E tires that can handle the sheer weight and torque. Here are my top recommendations for the Sierra 2500HD across different driving needs:

1. Michelin Defender LTX M/S (Premium) – Excellent highway tire. Offers the smoothest ride, longest tread life, and great wet traction. Perfect if you mainly tow on pavement.
2. BFGoodrich All-Terrain T/A KO2 (Premium) – The gold standard for all-terrain capability. Great for the AT4 trim, offering severe snow rating (3PMSF) and tough sidewalls for off-roading.
3. Falken Wildpeak A/T3W (Mid-Range) – An incredibly popular all-terrain tire that balances aggressive looks, off-road performance, and a quiet highway ride at a competitive price.
4. Cooper Discoverer HT3 (Budget-Friendly) – A dependable, commercial-grade highway rib tire designed for heavy hauling without breaking the bank.

When to inflate to max load psi

Since the Sierra 2500HD is a heavy-duty truck, managing tire pressure based on your payload is essential. The door placard usually recommends around 60 PSI for the front and 70 to 80 PSI for the rear under normal conditions.

However, when you are towing a heavy 5th-wheel RV, hauling a heavy payload in the bed, or operating at the truck's Gross Vehicle Weight Rating (GVWR), you should inflate the rear tires to the maximum cold pressure listed on the tire sidewall (typically 80 PSI for Load Range E tires). This prevents the tire from flexing too much under load, which reduces heat buildup and prevents catastrophic blowouts. When unloaded, you can drop the rears back to the placard's lower rating (if a range is given) to improve ride comfort and ensure even tread wear.

Lug nut torque & pattern

• Bolt Pattern: 8x180 mm
• Lug Nut Torque: 140 lb-ft (190 Nm)
• Socket Size: 22mm or 7/8"

When reinstalling wheels, always tighten the lug nuts in a star (crisscross) pattern to ensure the wheel seats evenly against the hub. Re-torque the lug nuts after 50 to 100 miles of driving.

Common tire issues for this vehicle

Heavy-duty trucks like the Sierra 2500HD are notorious for specific tire wear issues due to their weight and solid rear axles:

• Cupping and Heel-Toe Wear: The front tires often suffer from cupping or scalloping if the shocks start to wear out, or if the heavy diesel engine's weight isn't offset by regular tire rotations. Rotate your tires every 5,000 to 7,500 miles.
• Center Tread Wear on Rear Tires: If you drive unloaded most of the time but keep the rear tires inflated to 80 PSI, the center of the tread will wear out prematurely.
• TPMS Sensor Failures: The 433 MHz sensors have internal batteries that typically last 5-7 years. If your dash shows a "Service Tire Monitor System" light, a sensor has likely died and needs replacement.

Need new tires? Find a trusted shop on Repairius.