235/45R17 NANKANG AR-1 97Y XL Motorsport Tyres Road Legal (sold individually)

Serious grip for serious drivers. If you want a street legal semi slick that excels on circuit days and delivers confidence on fast road, this 235/45 R17 AR-1 in 97Y Extra Load is the go-to choice. Proven by club racers and track-day regulars, it offers relentless dry grip, rock-solid stability and consistent lap-after-lap performance.

Sold individually. Size references for search: 235/45R17, 235 45 17, 235-45-17, 97Y XL, 17 inch performance tyre.

Why enthusiasts pick AR-1 for 235/45 R17

• Street legal semi slick, ideal for circuit use, time attack and fast road.
• 100TW construction with a strong carcass for razor-sharp steering response.
• Kevlar reinforced in 17 inch and above to enhance stability and consistency during long sessions.
• 5.5 mm initial tread depth for performance that stays predictable as the laps rack up.
• E-marked and MSA List 1B approved, used as a control tyre in multiple UK one-make and club series.

Trusted in competition

Chosen as control rubber in the M3 Cup, 330 Challenge and Classic VW Cup, and a podium-winning option in series such as CSCC New Millennium and 750MC Club Enduro. That real-world pedigree translates into dependable pace and repeatable performance for your track day.

On-track feel and performance

• Ultra-fast warm-up and a broad operating window for confidence from the out-lap.
• Predictable breakaway makes it easy to push to the limit and shave lap times.
• Stiff sidewalls deliver crisp turn-in and stable braking.

Setup guidance

Get the most from your 235/45 R17 AR-1 with the following baseline targets:

• Temperature sweet spot: approximately 71 to 104 °C.
• Camber: aim between -1.0 and -3.0 degrees depending on chassis and usage.
• Hot pressures by vehicle mass:
  • Under 800 kg: about 23 to 27.5 psi
  • 800 to 1000 kg: about 24 to 32 psi
  • 1000 to 1400 kg: about 27.5 to 37 psi
  • Over 1400 kg: about 34 to 42 psi

Fitting notes

• Yellow dot indicates the lightest point. Align with the valve stem to aid balancing.
• EU label data for efficiency, wet grip and noise available on request.

Who is it for

Perfect for hot hatch, saloon and coupe track builds looking for a 235 section 17 inch semi slick. Ideal as a street legal track day tyre, circuit tyre, sprint tyre, time trial tyre or fast-road UHP option.

Why buy from MJ Modifications

We run these on our own projects and our customers love the pace and consistency. Expect strong dry grip, excellent feedback and durable performance over full sessions at demanding venues like Nurburgring and Spa.

Professional fitting and setup

Want them supplied and fitted with a geometry check and corner-weighting advice? Book with MJ Modifications in Warwickshire. Email info@mjmodifications.co.uk for a quote.

Keywords for shoppers: semi slick tyres 235/45R17, street legal track tyres 17 inch, competition tyres 235 45 17, E marked circuit tyre, List 1B, fast road tyre, r-compound, ultra high performance UHP, time attack tyre.