2019 GMC Yukon — Tire Size & Pressure Guide

As an ASE-certified master technician, I frequently work on full-size SUVs like the 2019 GMC Yukon. Built on GM’s robust truck platform, the Yukon requires the right tires to maintain its towing capacity, ride comfort, and safety. Whether you are driving a base SLE or a fully loaded Denali, having accurate tire specifications is crucial for vehicle maintenance and performance.

Here is your comprehensive guide to the 2019 GMC Yukon’s tire sizes, pressures, wheel specs, and replacement options.

Quick answer

• OEM Tire Sizes: 265/65R18, 275/55R20, or 285/45R22 (depending on trim and options)
• Recommended Cold Tire Pressure: 35 PSI Front / 35 PSI Rear (check driver's side door jamb placard to confirm)
• Bolt Pattern: 6x139.7 (also known as 6x5.5")
• Wheel Sizes & Offsets: 18x8.5 (+24mm offset), 20x9 (+27mm offset), 22x9 (+24mm offset)
• Load Index / Speed Rating: 114T (18-inch), 111S (20-inch), 110H (22-inch)
• Spare Tire Size: 265/70R17 (Full-size spare on a 17-inch steel wheel)
• TPMS Frequency: 315 MHz or 433 MHz (check your specific RPO code, XL/Denali models may use 433 MHz)

Tire sizes by trim

The 2019 GMC Yukon was offered in a few distinct trim levels. The standard wheelbase and XL models share the same general wheel and tire diameters, but here is a breakdown of what came from the factory:

Recommended replacement tires

When it is time to replace your Yukon's tires, you want something that can handle the vehicle's heavy curb weight while delivering a quiet, comfortable ride. Here are three highly recommended options across different price points:

• Premium Tier: Michelin Defender LTX M/S This is arguably the best tire for the GMC Yukon. It offers exceptionally long tread life, fantastic wet traction, and a whisper-quiet highway ride. It handles the weight of a full-size SUV perfectly.
• Mid-Range Tier: Continental TerrainContact H/T A great balance of price and performance, this highway terrain tire provides excellent braking distances, a smooth ride, and confident handling in all seasons.
• All-Terrain Option: Cooper Discoverer AT3 4S If you occasionally take your Yukon off-road, down muddy paths, or deal with heavy snow, this all-terrain tire offers aggressive traction without generating excessive road noise on the highway.

When to inflate to max load psi

Note: The standard GMC Yukon is classified as a light-duty (half-ton) vehicle, unlike Heavy Duty (HD) 2500/3500 trucks.

For everyday driving, you should strictly follow the 35 PSI recommendation on the driver's door placard. However, if you are towing a heavy boat or loading the Yukon to its Gross Vehicle Weight Rating (GVWR), you can safely increase the rear tire pressure closer to the "Max Cold Press" listed on the tire's sidewall (typically 44-50 PSI for standard load tires). This reduces sidewall flex, lowers tire operating temperatures, and improves towing stability. Just remember to air back down to 35 PSI once you are done towing to avoid a harsh ride and premature center tread wear.

Lug nut torque & pattern

Proper wheel installation is a matter of safety. If you are rotating your tires or installing the spare, adhere to these factory torque specifications:

• Bolt Pattern: 6x139.7mm (6x5.5")
• Lug Nut Torque: 140 lb-ft (190 Nm)
• Thread Size: M14 x 1.5

Always use a calibrated torque wrench and tighten the lug nuts in a star (crisscross) pattern. Re-torque the lug nuts after 50 to 100 miles of driving.

Common tire issues for this vehicle

1. Outer Edge Wear on Front Tires: Due to the Yukon’s heavy front end and independent front suspension, the front tires are prone to shoulder wear, especially if cornering aggressively. Regular alignments and tire rotations every 5,000 to 7,000 miles are critical.
2. Harsh Ride on 22-inch Wheels: The Denali's optional 285/45R22 tires look fantastic but have a much shorter sidewall than the 18-inch setup. This leads to a noticeably stiffer ride and makes the wheels more susceptible to pothole damage.
3. TPMS Sensor Battery Failure: By the time a 2019 model is 5 to 7 years old, the internal batteries in the TPMS sensors begin to die. If your tire pressure light flashes for 60 seconds upon startup before going solid, you likely need a new sensor.

Need new tires? Find a trusted shop on Repairius.