2020 Ram 1500: Tire Size, Pressure & Wheel Specs
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 size: 275/65R18 or 275/55R20
- Recommended cold tire pressure (door placard): 36 PSI (front), 36 PSI (rear)
- Bolt pattern: 6x139.7 (6x5.5")
- Wheel size: 18x8" or 20x9"
- Load index/speed rating: 116T
- Spare tire size: 275/65R18
- TPMS frequency: 433 MHz
Tire sizes by trim
| Trim | Standard Tire Size | Optional Tire Size |
|---|---|---|
| Tradesman | 275/65R18 | 275/55R20 |
| Big Horn | 275/65R18 | 275/55R20 |
| Laramie | 275/65R18 | 275/55R20 |
| Rebel | 275/70R18 | - |
| Laramie Longhorn | 275/55R20 | - |
| Limited | 275/55R20 | 285/45R22 |
Recommended replacement tires
- Budget-friendly: GT Radial Adventuro HT
- Mid-tier/all-terrain: Falken Wildpeak A/T3W
- Premium highway: Michelin Defender LTX M/S
When to inflate to max load psi
For the 2020 Ram 1500, inflating to the maximum pressure indicated on the tire sidewall is only recommended when hauling heavy loads or towing at the maximum rated capacity. For everyday driving, stick to the 36 PSI recommended on the door placard for a smoother ride and more even tread wear.
Lug nut torque & pattern
- Torque: 130 lb-ft (176 Nm)
- Pattern: Use a star or crisscross pattern when tightening the lug nuts to ensure the wheel is seated evenly against the hub.
Common tire issues for this vehicle
While the 2020 Ram 1500 is a robust truck, some owners have reported premature wear on the OEM tires, particularly when frequently towing or hauling. Regular tire rotations (every 5,000–7,500 miles) are crucial for maximizing tire life. Additionally, ensuring proper alignment can prevent uneven wear patterns, such as feathering or cupping, which can lead to a noisy and uncomfortable ride.
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More specs for the 2020 Ram 1500
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 Ram 1500 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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