235/40R18 Nankang AR-1 (AR1) 95Y XL Extra Load 100TW Road Legal Semi-Slick Track Day Tyre R-Compound Motorsport/Competition Fast Road – 18 Inch – 235/40/18 235 40 18 – E-Marked (Sold Individually)

235/40/18 AR-1 semi slick for circuit and street use. Extra Load 95Y speed rating. Sold per tyre.

Serious about lap times? This 235/40R18 AR-1 delivers huge dry grip, crisp steering feel and repeatable performance for drivers who live for track days, time attack and club racing. It is street approved, making it a great choice for fast-road blasts to and from the circuit while remaining overwhelmingly circuit focused.

We run AR-1 on our own cars and our customers love them for their stability, feedback and confidence at the limit. If you want a road legal semi slick that just works, this is it.

Why drivers choose AR-1 in 235/40R18

• Road legal semi slick with a strong circuit bias, approximately 90 percent track use.
• Single compound with a sticky 100TW rating for consistent grip and predictable balance.
• All sizes are supplied new with 5.5 mm tread depth for quick warm up and sharp response.
• Kevlar reinforced construction on 2019-on 100TW sizes from 17 inch upward for extra stability and consistency on high-load venues like Nurburgring and Spa.
• Proven in competition as a control tyre in series such as M3 Cup, 330 Challenge and Classic VW Cup, with podiums in open-tyre championships including CSCC New Millennium and 750MC Club Enduro.
• MSA List 1B approved with EU tyre labelling. E-marked for UK road use.
• XL loading and 95Y speed rating for performance saloons, hot hatches and coupes running 18 inch wheels.

Search-friendly fitment terms

235 40 18 semi slick tyres, 18 inch track day tyres UK, road legal track tyres, competition tyres 235/40R18, R compound radial, time attack tyres, club motorsport tyres, fast road tyres, dry grip track tyres.

Technical guidance

• Operating temperature window: 71 to 104 degrees Celsius.
• Recommended static camber: between -1.0 and -3.0 degrees depending on vehicle and usage.
• Suggested 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
• Balancing tip: align the yellow dot with the valve to minimise weights on both steel and alloy rims.
• EU grip, efficiency and noise ratings available on request.

Sizes

AR-1 is produced in a wide range from 13 inch to 20 inch, with new sizes being added regularly.

Professional fitting

Want them fitted and set up correctly first time? Book expert installation and geometry with MJ Modifications in Warwickshire. Email info@mjmodifications.co.uk for a quote.