225/45R17 (225/45/17) Nankang AR-1 AR1 94W XL Extra Load Semi Slick Track Day/Trackday Tyres - Road Legal E-Marked 100TW List 1B, 17 Inch Competition/Motorsport Racing Tyre (Sold Individually)

225/45R17 Nankang AR-1 94W XL semi slick road legal track tyre

Looking for a true track day weapon you can legally drive to the circuit on? The 225/45R17 Nankang AR-1 94W XL delivers relentless grip, rock solid stability and consistent lap-after-lap performance. Sold individually, this 17 inch extra load motorsport tyre is the go-to choice for serious enthusiasts who want a road legal semi slick with race car levels of feedback.

Also searched as: 225 45 17 AR1, 225/45/17 track tyres, 225-45-17 semi slicks, 17 inch competition tyres, W rated XL performance tyres, List 1B E-marked track day tyres UK.

Why choose AR-1 in 225/45R17 94W XL

• Road legal E-marked List 1B circuit tyre for fast road and predominantly track use
• XL casing and 94W speed and load rating for confidence at high speed and under heavy braking
• 5.5 mm tread depth out of the box for rapid warm-up and sharp turn-in
• Single compound strategy for predictable handling and easy setup
• Proven in competition as control rubber in M3 Cup, 330 Challenge and Classic VW Cup, with podiums in CSCC New Millennium and 750MC Club Enduro
• 2019-onwards 100TW production in 17 inch and above features Kevlar lining for enhanced stability and consistency on demanding circuits like the Nürburgring and Spa

Real-world confidence

Track drivers choose the AR-1 for its relentless dry grip, balanced rear stability and repeatable performance over long sessions. We run these ourselves on customer cars and feedback has been superb for lap time consistency, braking bite and steering precision. If you want a sticky 17 inch road legal racing tyre for sprint, time attack, club racing or open pit lane days, this size is a sweet spot for many hot hatches and performance saloons.

Key specifications

• Size: 225/45R17
• Load and speed: 94W XL
• Tread depth: 5.5 mm
• Compound: single compound, 100TW for 17 inch and above production
• Approval: E-marked with MSA List 1B status
• Usage profile: approximately 10 percent fast road, 90 percent track
• Availability across 13 to 20 inch diameters, with sizes continually expanding

Setup guidance for optimum performance

• Operating temperature window: 71 to 104 degrees Celsius
• Recommended static camber: between -1.0 and -3.0 degrees depending on vehicle and circuit
• Hot pressure guide:
  • 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 on both aluminium and steel wheels for best balance
• EU wet grip, fuel efficiency and noise data available on request

Perfect for

• Track days and open pit lane events
• Club racing, time attack, sprint and hillclimb
• Drivers wanting an E-marked semi slick that can drive to and from the circuit

Fitting and support

Professional fitting and geometry available at MJ Modifications in Warwickshire. Email info@mjmodifications.co.uk for a quote, setup advice and availability. We are happy to help you choose pressures and alignment to suit your car and track.

Note: This listing is for a single 225/45R17 Nankang AR-1 94W XL tyre. Buy the quantity you require for pairs or a full set.

Search-friendly terms

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