315/35ZR17 (315/35R17, 315 35 17) Nankang AR-1 AR1 102W 100TW Semi Slick Track Day Tyres - Road Legal / Street Legal R Compound Motorsport Performance | E-Marked MSA List 1B (Sold Individually)

315/35 ZR17 AR1 semi slick - street legal circuit rubber for serious pace

Hunt faster lap times with the 315/35R17 AR1 in 100 treadwear. This ultra high performance semi slick delivers massive dry grip, razor sharp steering feel and repeatable performance session after session. Load index 102 and W speed rating give track-ready confidence in a road legal casing, so you can drive to the venue, attack the day and head home on the same set. Sold individually.

Why drivers choose AR1 for track days and club motorsport

• Sticky 100TW compound for outstanding traction and braking on dry surfaces
• Single compound with 5.5 mm tread depth for consistency and predictable wear
• Aramid Kevlar reinforcement on 17 inch and larger sizes from 2019 production for extra carcass stability on high load corners
• E-marked and MSA List 1B approved for road use and eligible series
• Proven in competition - used as a control tyre in M3 Cup, 330 Challenge and Classic VW Cup, plus podiums in CSCC New Millennium and 750MC Club Enduro
• Confidence-inspiring breakaway and fast warm up to its operating window

Who it suits

Perfect for track day regulars, time attack, sprint and hill climb competitors who want the feel and bite of an R compound with the convenience of road legality. Ideal for powerful rear wheel drive and wide-arch track builds needing a 315 section width in 17 inch.

Fitment and setup guidance

• Balance mark: align the yellow dot with the valve stem to help minimise static imbalance
• Camber: works best between negative 1.0 and negative 3.0 degrees depending on platform and circuit
• Operating temperature: approximately 71 to 104 degrees Celsius
• Recommended hot pressures by vehicle weight:
  • 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
• EU grip, efficiency and noise data available on request

Real world confidence

We run these on our own cars and customer builds. Feedback is consistently positive about their dry grip, stable shoulder support and repeatable lap-after-lap performance on demanding circuits like the Nordschleife and Spa-Francorchamps.

Fitting service

Want these supplied and fitted by specialists We can help. Book professional mounting, balancing and a track-focused alignment with MJ Modifications in Warwickshire. Email info@mjmodifications.co.uk for a quote and availability.

Common search terms to help you find the right size

315/35R17, 315 35 17, 315-35-17, 315 35ZR17, AR1 semi slick, road legal track tyre, street legal race tyre, R compound track day tyre, performance tyres UK, circuit tyres, UHP tyres, time attack tyres, club racing tyres.