320/660/18 TYRE Nankang Slick SL-1

Nankang SL-1 320/660/18 slick tyre for 100 % circuit competition

The Nankang SL-1 in size 320/660/18 is a slick tyre developed exclusively for motorsport use. Designed for dry tracks, it is intended for drivers seeking maximum grip, excellent high-speed stability and consistent circuit performance.

Drawing on Nankang’s racing experience, particularly with the renowned AR-1, the Nankang SL-1 Slick uses a completely smooth tread to provide optimal contact with the asphalt. This design allows the chassis, braking and traction potential of a modified or competition vehicle to be fully exploited.

Role of the slick tyre

The slick tyre plays an essential role in a car’s circuit performance. Unlike a road or semi-slick tyre, it has no tread grooves, maximising the contact patch in dry conditions. The Nankang SL-1 therefore provides high grip under acceleration, braking and lateral load.

Its racing construction and specific compounds withstand the thermal and mechanical stresses of intensive driving: heavy braking, high cornering speeds, substantial lateral loads and repeated track sequences.

Symptoms or consequences of a worn or unsuitable tyre

A worn, unsuitable slick tyre or one subjected to too many heat cycles can seriously impair circuit handling. Loss of grip or uneven wear can reduce driver confidence and cause a significant loss of performance.

• Reduced grip in corners, under braking and acceleration
• Less consistent lap times and reduced traction on corner exit
• Unstable vehicle handling under heavy cornering loads
• Risk of overheating, premature degradation or uneven wear
• Loss of precision in changes of direction

Benefits of replacement

Replacing your worn tyres with Nankang SL-1 320/660/18 slick tyres restores optimal grip and improved consistency on track. This tyre is particularly suited to drivers seeking high-performance tyres for racing, private testing, intensive trackdays or competition vehicles.

• Maximum grip on dry tracks
• Excellent lateral stability in fast corners
• Increased driving precision and better running gear feedback
• Consistent performance over several laps
• Robust construction suited to motorsport demands
• Optimised contact patch to improve braking, traction and cornering grip

Specifications

• Brand: Nankang
• Model: Nankang SL-1 Slick
• Size: 320/660/18
• Range: 100 % slick tyre
• Use: circuit and competition use only
• Recommended conditions: dry track
• Tread: completely smooth for maximum contact area
• Product type: racing slick tyre
• Road approval: not approved for road use
• Delivery: free

Vehicle compatibility

The Nankang SL-1 320/660/18 is intended for competition vehicles, track cars, prototypes, GT cars, modified saloons, racing vehicles or trackday cars requiring 18-inch slick tyres compatible with size 320/660/18.

Before ordering, compatibility with the wheels, wheel arches, geometry, discipline regulations and vehicle fitting recommendations must be checked. As this tyre is reserved for competition, it must only be used in a suitable setting on a closed track.

Conclusion

The Nankang SL-1 320/660/18 slick tyre is a high-performance, durable and precise solution to fully exploit your car on circuit. Ideal for demanding drivers, it offers excellent dry-track grip and the consistency essential for intensive sporting use.