2025 Freightliner Cascadia Tire Size, Pressure & Specs

Quick answer

• OEM Tire Size: 295/75R22.5 (steer), 275/80R22.5 (drive)
• Recommended Cold Tire Pressure (Placard): 110-120 psi (steer), 85-100 psi (drive)
• Bolt Pattern: 10x285.75mm
• Wheel Size: 22.5" x 8.25" (steer), 22.5" x 8.25" (drive)
• Load Index/Speed Rating: 144/141L (steer), 149/146L (drive)
• Spare Tire: Typically no spare; fleets use road service.
• TPMS Frequency: 433 MHz

Tire Sizes by Trim

Recommended Replacement Tires

• Michelin X-Line Energy Z (Steer): Premium steer tire for long-haul applications, known for fuel efficiency and a long tread life. ($$$$)
• Bridgestone R284 Ecopia (Steer): A fuel-efficient steer tire with excellent wet traction and a durable casing. ($$$)
• Goodyear Fuel Max LHD 2 (Drive): A popular choice for drive axles, offering low rolling resistance and a deep tread for long mileage. ($$$)
• Continental Conti EcoPlus HD3 (Drive): A third-generation drive tire with advanced compounding for improved fuel economy and durability. ($$$)
• Yokohama 712L (Drive): A value-oriented drive tire that provides a good balance of fuel efficiency and long life. ($$)

When to Inflate to Max Load PSI

For a Class 8 truck like the Freightliner Cascadia, tire pressure is critical for safety, fuel economy, and tire life. Unlike passenger cars, these tires are often inflated close to their maximum pressure to handle the immense weight of the vehicle and its cargo. The steer axle tires are typically inflated to a higher pressure than the drive axle tires.

• Steer Axles: Steer tires on the Cascadia should be inflated to the pressure indicated on the door placard, typically between 110 and 120 psi. This is essential for proper handling and to carry the weight of the engine and cab.
• Drive Axles: Drive axle tire pressure depends on the load. For a fully loaded trailer, inflating the drive tires to the maximum pressure listed on the tire sidewall (or close to it, adhering to placard recommendations) is necessary to safely carry the load. This is often in the 85-100 psi range for duals. Running underinflated tires with a heavy load can cause excessive heat buildup, leading to a catastrophic blowout.

Lug Nut Torque & Pattern

• Torque Spec: 450-500 ft-lbs
• Pattern: For a 10-lug wheel, tighten the nuts in a star or cross pattern. Start with one nut, then tighten the one directly opposite. Move to the nut two positions over and tighten it, then tighten the one directly opposite it. Continue this pattern until all nuts are snug. Then, repeat the pattern to bring all lug nuts to the final torque specification using a calibrated torque wrench.

Common Tire Issues for This Vehicle

• Irregular Wear on Steer Tires: Misalignment is a common cause of feathering or one-sided wear on steer tires. Given the high mileage these trucks see, even a minor alignment issue can destroy a tire quickly.
• River Wear on Drive Tires: This wavy wear pattern is common on the inner tires of a dual setup. It's often caused by a combination of factors including mismatched tire diameters, incorrect inflation, and axle alignment issues.
• Sidewall Damage: Due to the nature of their work—docking, tight turns, and navigating varied road conditions—Cascadias are susceptible to sidewall impacts that can cause cuts, bulges, and abrasions, compromising the tire's integrity.

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