Nankang AR-1 235/40R17 94W XL Extra Load Semi Slick Track Day Tyre | Road Legal Street Legal Road Approved List 1B E Marked 100TW Kevlar | AR1 Competition Racing Time Attack Drift | 235/40/17 235 40 17 17 Inch Performance Motorsport Tire | Single

235/40R17 AR-1 94W XL road approved semi slick

Chasing personal bests on circuit while staying street legal? This 235/40R17 AR-1 delivers serious dry grip, razor sharp steering feel and repeatable performance session after session. It is a favourite with track day regulars who want slick-like pace in a road-approved package. Sold per tyre.

Why enthusiasts choose the AR-1 in 235/40 R17

• Ultra-high grip semi slick tread pattern for rapid warm up and stable lap after lap consistency
• Single compound across the range and 5.5 mm new tread depth for a predictable balance front to rear
• 100TW construction in 17 inch and above features a Kevlar lining that improves stability and heat control on intense circuits including Nurburgring and Spa
• Road approved with List 1B classification, ideal for sprints, hillclimb, club racing practice and fast road shakedowns
• Extra Load 94W rating provides a strong carcass for heavier hot hatches, saloons and coupes

Proven in competition

Chosen as the control tyre in the M3 Cup, 330 Challenge and Classic VW Cup, with podiums in open-tyre series such as CSCC New Millennium and 750MC Club Enduro. Our own team and customers rate the AR-1 for its feedback, braking stability and pace from the first push lap.

Best for

• Track days and time attack where fast warm-up and consistent heat management matter
• Drivers wanting a road legal, competition-focused 235/40 R17 solution
• Setups that benefit from a stiff sidewall and precise turn-in

Key specs and setup guidance

• Size: 235/40R17
• Load and speed: 94W XL
• Treadwear: 100TW (17 inch and above include Kevlar lining)
• New tread depth: 5.5 mm
• Operating temperature window: 71 to 104 degrees celsius
• Recommended camber: negative 1.0 to negative 3.0 degrees
• Typical hot pressures:
  • 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

Fitment and mounting tips

• Align the yellow dot with the valve stem to aid wheel balance on both steel and alloy rims
• EU grip, efficiency and noise ratings available on request
• For professional fitting, heat cycling advice and four-wheel alignment, book with MJ Modifications in Warwickshire. Email info@mjmodifications.co.uk for a quote

Search-friendly sizing and terms

Also searched as: 235/40 R17 semi slick, 235 40 17 track day tyre, 235-40-17 road legal track tyre, AR1 235/40/17, 17 inch competition tyre, street legal track tyre UK, performance circuit tyre 94W XL.

Available across a wide size range from 13 to 20 inch for multi-vehicle setups. This listing is for 235/40R17 and is sold individually.