2025 Kenworth W900 Tire Size & Pressure
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: Varies significantly based on configuration and axle. Common sizes include 285/75R24.5, 11R24.5, 295/75R22.5, 11R22.5.
- Recommended Cold Tire Pressure (Door Placard): Refer to the vehicle's specific tire placard. Typically ranges from 100-120 PSI for steer tires and 85-105 PSI for drive tires.
- Bolt Pattern: 10-hole, 285.75mm bolt circle (11.25 inches) for most heavy-duty applications.
- Wheel Size: 22.5 x 8.25 inches or 24.5 x 8.25 inches are common.
- Load Index/Speed Rating: Varies greatly by tire size and application. Commercial truck tires typically have load ranges from F to L and speed ratings from L (75 mph) to M (81 mph).
- Spare Tire Size: Spare tires are rarely carried on heavy-duty trucks. Fleets typically rely on roadside assistance or utilize a service truck.
- TPMS Frequency: 433 MHz is the most common frequency for new heavy-duty trucks.
Tire Sizes by Trim
For the Kenworth W900, tire sizes are not determined by "trim" in the traditional passenger vehicle sense. Instead, they are highly dependent on the vehicle's specific configuration, intended use (e.g., long-haul, vocational), axle ratings, and customer preference. Kenworth offers a wide range of axle and suspension options, which directly influence tire and wheel specifications.
| Axle Configuration | Common Steer Tire Sizes | Common Drive Tire Sizes |
|---|---|---|
| Single Steer Axle | 285/75R24.5, 11R24.5 | 285/75R24.5, 11R24.5 |
| 295/75R22.5, 11R22.5 | 295/75R22.5, 11R22.5 | |
| Tandem Drive Axles | 285/75R24.5, 11R24.5 | 285/75R24.5, 11R24.5 |
| 295/75R22.5, 11R22.5 | 295/75R22.5, 11R22.5 |
Note: This table represents common configurations. Always verify your specific vehicle's tire placard for exact specifications.
Recommended Replacement Tires
Selecting replacement tires for a Kenworth W900 involves considering factors like application (e.g., long-haul, regional, construction), desired tire life, fuel efficiency, and traction requirements. Here are a few popular options across different price tiers:
- Michelin X Line Energy Z (Steer) / D (Drive): Premium choice, known for excellent fuel efficiency and long tread life. Often seen in long-haul operations. (High Price Tier)
- Goodyear Fuel Max LHD (Drive) / LHS (Steer): Another top-tier option offering a balance of fuel economy, traction, and durability. (High Price Tier)
- Bridgestone M799 (Steer) / M760 (Drive): A popular workhorse tire, offering good all-around performance and robust construction for various applications. (Mid-High Price Tier)
- Continental Hybrid HS3 (Steer) / HD3 (Drive): Offers a good blend of fuel efficiency and mileage, suitable for a mix of highway and regional use. (Mid Price Tier)
- Hankook AH37 (Steer) / DH07 (Drive): A more budget-friendly option that still provides solid performance and durability for general applications. (Mid-Low Price Tier)
When to Inflate to Max Load PSI
For heavy-duty trucks like the Kenworth W900, maintaining correct tire pressure is critical for safety, fuel economy, and tire longevity. While there is a "max load PSI" indicated on the tire sidewall, it
More specs for the 2025 Kenworth W900
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
2025 Kenworth W900 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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