2021 Freightliner Cascadia Tire Size, Pressure & Wheel Specs
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Quick answer
- OEM tire size: 295/75R22.5 (standard)
- Recommended cold tire pressure (door placard): 110–120 psi (front axle), 85–100 psi (rear axles)
- Bolt pattern: 10x285.75mm
- Wheel size: 22.5" x 8.25" (standard)
- Load index/speed rating: 144/141L
- Spare tire size: Full-size spare recommended
- TPMS frequency: 433 MHz
Tire sizes by trim
| Trim | Standard Tire Size | Optional Tire Sizes |
|---|---|---|
| Cascadia (Day Cab) | 295/75R22.5 | 275/80R22.5, 11R22.5 |
| Cascadia (Sleeper) | 295/75R22.5 | 275/80R22.5, 11R22.5 |
Recommended replacement tires
- Michelin X Line Energy Z (steer): Premium, fuel-efficient steer tire with long tread life. ($$$)
- Bridgestone R283A Ecopia (steer): Durable steer tire with excellent fuel economy and a smooth ride. ($$$)
- Goodyear Endurance LHD (drive): Long-lasting drive tire with excellent traction and high mileage. ($$)
- Yokohama 712L (drive): Fuel-efficient drive tire with a deep tread for long life. ($$)
- BFGoodrich ST244 (trailer): Reliable trailer tire with a durable casing. ($)
When to inflate to max load psi
On a heavy-duty truck like the Freightliner Cascadia, it's critical to adjust tire pressure based on your load. The recommended cold tire pressure on the door placard is for a typical load. Inflate your tires to the maximum recommended pressure (as indicated on the tire sidewall) when you are carrying a full load to ensure stability, prevent overheating, and minimize wear.
Lug nut torque & pattern
- Lug nut torque: 450–500 ft-lbs
- Lug nut pattern: Crisscross pattern (star pattern)
Common tire issues for this vehicle
- Irregular wear: Improper inflation and alignment are the most common causes of irregular tire wear on the Cascadia. Regularly check your tire pressure and have your alignment checked every 6 months.
- Rivering/channel wear: This wear pattern is common on steer tires and is often caused by a combination of factors, including alignment, suspension, and tire design. Choosing a steer tire with a decoupling groove can help mitigate this issue.
- Shoulder wear: Worn steer axle kingpins and bushings can lead to excessive shoulder wear on the front tires.
Need new tires? Find a trusted shop on Repairius.
More specs for the 2021 Freightliner Cascadia
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
2021 Freightliner Cascadia 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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Values can vary by engine, trim and build date; check your VIN-specific service information. Updated 2026-08-14.