31/18.5-15LT Quick Time Pro DOT Tire

The 31/18.5-15LT Quick Time Pro DOT Tire from Hoosier is engineered for serious performance enthusiasts who demand competition-grade rubber without sacrificing street legality. This DOT-approved tire bridges the gap between drag strip dominance and road-legal capability, making it the go-to choice for bracket racers, street-legal drag cars, and weekend warriors pushing modified vehicles to their limits. Whether you're building a dedicated quarter-mile machine or a street car that sees occasional track duty, this tire delivers the launch characteristics and straight-line stability that separate winners from the rest.

The 31/18.5-15LT sizing (31-inch overall diameter, 18.5-inch width, mounted on 15-inch wheels) represents Hoosier's proven formula for traction-focused light truck applications. The Quick Time Pro compound is formulated for immediate grip on launch while maintaining predictable wear characteristics over multiple passes, critical for racers logging consistent ET sheets. The reinforced sidewall construction handles the abuse of hard launches and aggressive weight transfer without rolling or chunking, while the tread pattern—though minimal—is optimized for quick heat cycles that prepare the rubber for peak performance within the first few passes of a racing event.

This tire is ideal for owners of lifted trucks, Jeeps, and performance-oriented vehicles competing in bracket racing or autocross events where DOT approval is mandatory. Fitment requires a 15-inch wheel diameter, and the 18.5-inch width demands adequate fender clearance—verify your vehicle's suspension geometry and any lift modifications before purchase. At 42.35 lbs per tire, account for rotational mass when calculating vehicle dynamics; competitive builders often weigh individual tires to match sets for consistency. Installation on modern wheel balancing equipment is straightforward, though some shops may require special consideration for the aggressive sidewall construction.