225/45R15 (225 45 15) Nankang AR-1 AR1 87W XL Extra Load Semi Slick Track Day/Trackday Racing Tyres - Road Legal/List 1B - Motorsport/Circuit/Time Attack - 15 Inch Performance UHP - Street Legal - Sold Individually

225 45 15 Nankang AR1 87W XL trackday semi-slick - street approved, sold per tyre

Hunting for serious lap-time pace without giving up road use? The Nankang AR1 in 225/45 R15 is a street-approved, semi-slick competition tyre built for drivers who live for circuit sessions, sprints and time attack. This 15 inch size delivers ultra-high performance grip, razor-sharp steering feel and repeatable performance run after run.

We use these on our own builds at MJ Modifications and our customers love the confidence, consistency and dry grip. If you want a road-legal track tyre that feels slick-like when hot and stays predictable at the limit, this is it.

Why choose the AR1 for 225/45R15

• Semi-slick tread design for maximum dry traction and crisp turn-in
• Single rubber blend across the range for consistent behaviour and easy setup
• Supplied with 5.5 mm tread depth for strong performance out of the box
• XL load construction and W speed rating for stability at pace
• Street legal in the UK and EU with Motorsport UK List 1B approval
• Chosen as a control tyre in multiple club series and proven on podium-winning cars

Perfect for

• Track days and open pitlane events
• Club racing, sprints, autosolo and hill climb practice
• Fast-road builds wanting serious dry-weather grip

Key details

• Size: 225/45 R15
• Load and speed: 87W XL
• Construction: semi-slick competition-focused casing for fast warm-up and stability
• Sold individually - price is per tyre

Performance setup guidance

For best results, monitor temperatures and adjust pressures to suit your car and driving style.

• Optimum operating window: 71 to 104 degrees Celsius
• Suggested camber: between -1.0 to -3.0 degrees
• Recommended hot pressures:
  • Under 800 kg: 23 to 27.5 psi
  • 800 to 1,000 kg: 24 to 32 psi
  • 1,000 to 1,400 kg: 27.5 to 37 psi
  • Over 1,400 kg: 34 to 42 psi

Fitting notes

• Balance aid: align the yellow dot with the valve stem on both alloy and steel wheels
• EU grip, efficiency and noise data available on request

Professional fitting and advice

Have your tyres fitted by specialists who know track setups. MJ Modifications in Warwickshire can supply, fit and align these for your car. Email info@mjmodifications.co.uk for a quote and setup recommendations.

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