2020 GMC Yukon: Tire Size, Pressure, & Wheel Specifications
AI-generated reference. Always verify torque values, fluid capacities, intervals, and procedures against the manufacturer's service manual or OEM repair information before performing work. Repairius is not liable for damage from acting on this content without verification.
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Quick Answer
- OEM Tire Sizes: 265/65R18, 275/55R20, 285/45R22
- Recommended Cold Tire Pressure (Door Placard): 30-35 PSI (Varies by trim and tire size)
- Bolt Pattern: 6x139.7mm
- Wheel Size: 18x8.5", 20x9", 22x9"
- Load Index/Speed Rating: Varies by tire size (e.g., 112S for 265/65R18)
- Spare Tire Size: Full-size spare, often matching one of the OEM sizes or a temporary spare (e.g., T175/80D17 depending on trim and options).
- TPMS Frequency: 315 MHz
Tire Sizes By Trim
| Trim Level | Tire Size | Wheel Size | Offset (approx.) |
|---|---|---|---|
| SLE | 265/65R18 | 18x8.5" | +24mm |
| SLT | 265/65R18 | 18x8.5" | +24mm |
| SLT | 275/55R20 | 20x9" | +24mm |
| Denali | 275/55R20 | 20x9" | +24mm |
| Denali (Optional) | 285/45R22 | 22x9" | +24mm |
Note: Wheel sizes and offsets are general and can vary slightly with specific wheel options.
Recommended Replacement Tires
The 2020 GMC Yukon, a full-size SUV, requires tires that can handle its weight, provide a comfortable ride, and offer reliable all-season performance. When choosing replacement tires, consider your driving habits and local climate.
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Michelin Defender LTX M/S (Premium Tier): This is a highly-rated all-season tire known for its excellent tread life, quiet ride, and strong wet and dry traction. It's a popular choice for SUVs and light trucks that prioritize comfort and longevity. Expect to pay in the range of $220-$280 per tire.
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Goodyear Wrangler SR-A (Mid-Range Tier): Often an OEM tire on many trucks and SUVs, the Wrangler SR-A offers a good balance of all-season traction and a comfortable ride. It's a solid choice for everyday driving. Prices generally fall between $180-$240 per tire.
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Falken Wildpeak H/T02 (Value Tier): For those seeking a durable highway-terrain tire with good all-season capability at a more accessible price point, the Falken Wildpeak H/T02 is an excellent option. It offers a robust construction and decent tread life. These typically cost around $160-$210 per tire.
When to Inflate to Max Load PSI
The 2020 GMC Yukon is not generally classified as an "HD (Heavy Duty) truck" in the same vein as a 2500 or 3500 series. Therefore, the concept of constantly inflating to "max load PSI" as you would for a heavy-duty work truck hauling extreme loads doesn't directly apply for typical use.
For your 2020 GMC Yukon, always adhere to the recommended cold tire pressures found on your vehicle's door placard. This pressure is optimized for ride comfort, handling, and tire longevity under normal driving conditions and typical passenger/cargo loads. Inflating to the maximum pressure listed on the tire's sidewall (which is the tire's maximum safe operating pressure, not the vehicle's recommended pressure) should only be considered if you are consistently carrying the absolute maximum payload or towing near the vehicle's maximum towing capacity, and even then, only if it does not exceed the vehicle manufacturer's recommendations. Over-inflating can lead to a harsher ride, uneven tire wear, and potentially reduced traction.
Lug Nut Torque & Pattern
The lug nut torque specification for the 2020 GMC Yukon is typically 140 lb-ft (190 Nm).
When tightening lug nuts, always follow a star or crisscross pattern to ensure even seating of the wheel against the hub. This prevents warping of the brake rotor or uneven stress on the wheel studs. After driving approximately 50-100 miles after a wheel removal/installation, it
More specs for the 2020 GMC Yukon
Oil Capacity & Filter
Capacity, weight, filter PN, drain plug torque, change interval.
Fluid Type Specs
Engine oil, coolant, ATF, diff, brake, PS, DEF — with OEM spec numbers.
Coolant Capacity & Type
Total system capacity, OEM coolant spec, flush interval, bleed tips.
Transmission Fluid & Service
Trans model, fluid spec, capacity, filter PN, service interval.
Torque Specifications
Lug nuts, drain plug, caliper, axle nut, plug, key fasteners.
Brake Pad & Rotor Specs
Pad PNs, rotor size, min thickness, caliper torque.
Battery Size & Group
Group size, CCA, AGM/flooded, dimensions, reset note.
A/C Refrigerant & Oil
R-134a or R-1234yf, charge oz, PAG oil spec.
Bulb Sizes (Headlight, Tail, Fog)
Headlight, fog, tail, turn, reverse, interior.
Factory Maintenance Schedule
Service intervals by mileage, severe-duty notes, known issues.
Towing Capacity & Payload
Max tow, payload, GVWR/GCWR, hitch class by trim.
Fuse Box Diagram & Amperage
Fuse box locations, layout, amps, and what each fuse controls.
Serpentine Belt Routing & Length
Belt routing, length, rib count, OEM + aftermarket PNs.
Wheel Alignment Specifications
Camber, caster, toe ranges (front & rear), adjustability notes.
Paint Color Codes
All factory colors with paint codes, sticker location, touch-up tips.
Wiper Blade Sizes
Driver/passenger/rear blade size, attachment, OEM + cross-refs.
Spark Plug Type & Gap
Plug PN, gap, torque, interval by engine.
Transmission & Axle Gear Ratios
Trans gear ratios, axle ratios, RPO codes, tow vs MPG impact.
Key Fob Programming
DIY programming steps, FCC ID, fob PN, battery, transponder.
Same spec — other model years
Maintenance & repair guides
2020 GMC Yukon Maintenance Schedule →
Available maintenance guidance; confirm the manufacturer schedule.
Repair planning references →
Plan the scope of work; detailed procedures need configuration-matched evidence.
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