205/50R15 NANKANG AR-1 89W XL Motorsport Tyres Road Legal (sold individually)

Serious grip for serious lap times. If you want a 15 inch semi slick that you can drive to the circuit, attack the session and drive home, this 205 50 15 AR1 is the one.

The AR1 is Nankang’s proven track-focused, road-legal competition tyre for drivers chasing consistency, precision and raw pace. Built for frequent track day use and fast-road blasts, it delivers the feel and feedback you need to push harder with confidence.

Why enthusiasts choose AR1

• Track-first design with road legality for ultimate convenience
• Single compound and 5.5 mm tread depth for predictable, repeatable performance
• Stiff construction for razor-sharp steering response and stable braking
• Optimised for dry grip, heat stability and fast warm-up
• Used as a control tyre in M3 Cup, 330 Challenge and Classic VW Cup, and a podium winner in CSCC New Millennium and 750MC Club Enduro
• MSA List 1B approval with EU tyre labelling

We run AR1s on our own builds and many customer cars. Feedback is consistently strong on grip, balance and longevity for a semi slick. If your goal is quicker laps and dependable feel, this tyre is a standout choice.

Key details for this fitment

• Size: 205/50 R15
• Load/Speed: 89W XL (extra load casing for added stability)
• Usage split: approximately 10 percent fast road and 90 percent circuit
• Sold individually

The AR1 range spans 13 inch through 20 inch sizes, with new options added regularly. Later 100TW constructions in 17 inch and above feature a Kevlar lining for extra stability at high speed on demanding circuits such as Nürburgring and Spa, underlining the platform’s focus on consistency.

Set-up guidance

• Operating window: 71 to 104 degrees Celsius
• Camber: typically between -1.0 to -3.0 degrees depending on vehicle and circuit
• Hot pressures as a starting point:
  • Under 800 kg: 23 to 27.5 psi
  • 800 to 1000 kg: 24 to 32 psi
  • 1000 to 1400 kg: 27.5 to 37 psi
  • Over 1400 kg: 34 to 42 psi
• Mounting tip: align the yellow dot with the valve stem for best balance
• EU grip, efficiency and noise data available on request

Ideal for

Track days, time attack, club racing, sprints, hill climbs, autosolo and fast-road builds wanting a road-legal semi slick. Search terms you might know this by include semi slick 205/50/15, 205 50 R15 track day tyre, AR1 205-50-15, performance road legal competition tyre and 15 inch motorsport rubber.

Fitting and geometry

Want it supplied and fitted with a track-ready alignment? Book with MJ Modifications in Warwickshire. We offer tyre fitting, balancing and geo for track day setups. Email info@mjmodifications.co.uk for a quote.