235/45R13 NANKANG AR-1 91V XL Motorsport Tyres Road Legal (sold individually)

235/45 R13 AR1 Semi Slick Track Day Tyre — V Rated, XL Reinforced

Chasing lap time without compromising road use approval? This 235/45 R13 AR1 delivers outstanding dry grip, stable handling and repeatable performance on circuit while remaining street legal under EU labelling with MSA List 1B approval. It is sold individually, so you can order the exact quantity you need for square or staggered setups.

We run these ourselves at MJ Modifications and our customers love the confidence they give on fast track work. Expect quick warm-up, strong lateral grip and a composed feel through long stints.

Why choose this 235/45R13 AR1

• Size variants for search: 235/45R13, 235 45 13, 235x45x13, 13 inch performance tyre
• Semi slick tread design aimed at circuit, sprint, hillclimb, time attack and fast road driving
• Single compound and 5.5 mm tread depth for consistent, predictable grip
• Load index 91 and V speed rating with XL extra load construction for added stability
• EU labelled with MSA List 1B approval for UK motorsport categories that permit List 1B
• Used as control rubber in M3 Cup, 330 Challenge and Classic VW Cup, plus proven podium results in CSCC New Millennium and 750MC Club Enduro

Note: The AR1 range spans 13 to 20 inch diameters. From 17 inch and above, 2019-on 100TW versions include a Kevlar lining for additional high-speed stability. The 235/45 R13 specification follows the proven AR1 construction without the Kevlar update.

Set-up guidance

• Operating temperature window: 71 to 104 degrees Celsius
• Camber preference: between -1.0 and -3.0 degrees depending on vehicle and circuit
• Recommended hot pressures by vehicle weight:
  • 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

Fitting advice

• Yellow balance dot is the lightest point of the tyre. Align it with the valve stem on alloy or steel wheels for optimal balance.
• EU grip, efficiency and external noise ratings are available on request.

Ideal for

• Track day enthusiasts seeking a road-approved semi slick
• Clubman racing, sprints and hillclimbs where List 1B tyres are permitted
• Drivers wanting dependable lap-after-lap consistency and strong mid-corner stability

Need professional fitting or a tailored setup? Book with MJ Modifications in Warwickshire. Email info@mjmodifications.co.uk for a quote and availability.

Keywords to help you find the right product: semi slick track tyre, trackday tyre 13 inch, performance 235 45 13, street legal track tyre, List 1B track tyre, extra load V rated, circuit tyre, fast road tyre.