2019 International LT — Tire Size, Pressure & Wheel Specs

As an ASE-certified master technician dealing with Class 8 commercial vehicles, I frequently field questions regarding the tire and wheel specifications for the 2019 International LT. Built for long-haul efficiency and heavy-duty performance, the International LT Series requires precise tire maintenance to ensure safety, maximize fuel economy, and extend tread life.

Below is your comprehensive guide to the tire sizes, inflation pressures, and wheel specs for the 2019 International LT.

Quick answer: 2019 International LT Tire Specs

• OEM Tire Size: 295/75R22.5 (Most common low-profile linehaul spec); 11R22.5 and 11R24.5 also widely available.
• Recommended Cold Tire Pressure (Door Placard): 105–110 PSI (Front/Steer) / 95–100 PSI (Rear/Drive tandems) — Always verify with your specific door jamb placard based on gross axle weight rating (GAWR).
• Bolt Pattern: 10-lug on 285.75mm (11.25 inches) standard hub-piloted.
• Wheel Size: 22.5" x 8.25" or 24.5" x 8.25" (Steel or Aluminum).
• Load Range / Speed Rating: Load Range G (14-ply) or H (16-ply) most common; Speed Rating L (75 mph) or M (81 mph).
• Spare Tire Size: N/A (Most Class 8 tractors do not carry a mounted spare from the factory).
• TPMS Frequency: 433 MHz (If equipped with factory Bendix SmarTire or similar integrated systems).

Tire Sizes by Configuration

While passenger cars categorize tires by "trim," Class 8 trucks like the International LT dictate tire size based on wheel specification, ride height, and application (Day Cab vs. Sleeper, regional vs. linehaul).

Note: Wide-base "Super Singles" are an optional spec on drive axles to save weight and improve rolling resistance.

Recommended Replacement Tires

Choosing the right tire for an International LT depends on your route and payload. Here are highly recommended commercial options broken down by tier:

1. Michelin X Line Energy Z (Steer) / D (Drive) — Premium Tier Unmatched fuel efficiency and casing durability. Excellent for cross-country linehaul fleets focused on minimizing cost-per-mile.
2. Bridgestone R213 Ecopia (Steer) / M713 (Drive) — Premium Tier Incredible wear resistance and wet traction. A favorite among owner-operators for its retreadability and even wear profile.
3. Goodyear Endurance RSA — Mid-Tier/Premium A fantastic all-around regional and linehaul tire that handles varied road surfaces well, featuring a tough casing that withstands curbing better than most.
4. Firestone FS591 / FD691 — Mid-Tier Solid, reliable performance at a lower upfront cost than the top-tier flagship brands, making it an excellent choice for budget-conscious fleets.

When to inflate to max load psi

Because the 2019 International LT is a heavy-duty Class 8 truck, tire pressure is inextricably tied to your GAWR (Gross Axle Weight Rating).

You should inflate tires to their maximum sidewall pressure (often 110 or 120 PSI for Load Range H) only when your axle weight demands it. For example, if your front steer axle is loaded to its maximum 12,000 or 13,200 lbs rating, you will typically need 105 to 110 PSI in the steer tires to safely carry the load. Driving empty with maximum tire pressure will cause rapid center-tread wear, harsh ride characteristics, and potential suspension fatigue. Always consult the Load and Inflation Tables provided by your tire manufacturer to match your scale weights.

Lug nut torque & pattern

• Bolt Pattern: 10 x 285.75mm (Hub-piloted).
• Lug Nut Torque: 450 – 500 lb-ft.
• Procedure: Always tighten in a star/crisscross pattern. For hub-piloted wheels, apply a couple of drops of oil to the wheel stud threads and between the nut and the integral washer. Never lubricate the mounting face of the wheel or hub. Always re-torque lug nuts after 50 to 100 miles of driving following a wheel installation.

Common tire issues for this vehicle

1. Rivering / Cupping on Steer Tires: The LT’s front suspension geometry requires exact alignment. Toe misalignment, worn shock absorbers, or loose kingpins frequently cause edge cupping or "river" wear on steer tires.
2. Mismatched Duals: On the rear drive tandems, failing to ensure dual tires are within 1/4-inch in diameter (or 4/32nds in tread depth) of each other will cause the larger tire to carry too much weight, leading to blowouts or irregular wear on both tires.
3. Underinflation: Commercial tires running even 10% underinflated generate massive amounts of heat, degrading the casing and significantly reducing fuel economy.

Need new tires? Find a trusted shop on Repairius.