Michelin 631944 TRX-B Radial Tire 200/60VR390 90V

The Michelin TRX-B 200/60VR390 is a classic ultra-high performance summer radial tire designed for vintage European sports cars and luxury vehicles from the 1970s and 1980s. This tire features the innovative TRX tire-and-wheel system introduced by Michelin in 1975, which pairs a low-profile tire design with a specially engineered metric rim for optimal performance.

Key Features:

• Load index 90V service description with V speed rating (up to 149 mph)
• 200mm section width with 60 aspect ratio profile on 390mm (15.35-inch) metric rim
• Overall diameter of 640mm (25.2 inches) with 206mm (8.1-inch) section width
• Blackwall sidewall styling for period-correct aesthetics
• Single-ply polyester casing with dual steel belts and polyamide reinforcement
• Maximum load capacity of 1,323 lbs at 51 psi
• Tubeless radial construction
• UTQG rating: 180 A A

The TRX-B design revolutionized tire technology with its distributed tension (Tension Repartie) construction, allowing even stress distribution throughout the tire casing. The flatter, lower rim flange works in harmony with the tire bead to create a gradual casing curvature that eliminates traditional S-shaped flexing. This innovative design delivers exceptional directional stability, remarkable grip through optimal contact patch pressure distribution, and superior cornering performance near the limit.

Racing Heritage: The Michelin TRX proved its capabilities in Formula 1 racing with the Renault team and in World Rally Championship competition on legendary vehicles including the Audi Quattro, Peugeot 205 Turbo 16, and Renault 5 Turbo.

Important Note: TRX tires require metric TRX-specific wheels and cannot be mounted on standard inch-sized rims. This is a summer tire not recommended for use in temperatures below 45°F (7°C), as cold weather can cause irreversible compound cracking.