265/35R20 Nankang AR-1 (AR1) 99Y XL Semi Slick Road Legal Track Day Tyres (265/35 ZR20 | 20 Inch) Motorsport/Competition UHP Racing Tires, 100TW, MSA List 1B - Sold Individually

265/35 R20 AR1 Semi Slick XL 99Y – road approved track-day rubber, sold individually

Chasing lap times without sacrificing drive home convenience. The AR1 in 265/35 R20 delivers serious circuit performance with street approval, giving you the confidence to push hard at track days and club events while staying compliant for the journey there and back.

Engineered for drivers who run frequent open pit lane days and want predictable, repeatable grip, this competition-focused semi slick comes in a single, dialled-in compound and is manufactured with a 5.5 mm tread depth for quick warm-up and consistent handling. In 17 inch and above, the 100TW construction features a Kevlar lining to enhance stability and consistency on punishing venues such as Nurburgring and Spa.

• Track-first design that still carries road approval
• Single compound for reliable, repeatable pace
• 5.5 mm tread depth for fast activation and steady feedback
• Kevlar reinforced casing on 2019-on 100TW in 17 inch and above for high-speed stability
• Recognised with EU tyre labelling and MSA List 1B approval

Proven in UK club motorsport: used as a control tyre by M3 Cup, 330 Challenge and Classic VW Cup, and a podium winner in open-tyre series including CSCC New Millennium and 750MC Club Enduro.

Who is it for

Ideal for enthusiasts looking for a 20 inch semi slick with serious dry grip. If you are searching for 265/35 R20 track tyres, 265 35 20 semi slicks, ZR20 road legal racing tyres, 99Y XL competition tyres or ultra high performance rubber for circuit use, the AR1 is a top choice.

Real-world feedback

We run these ourselves and our customers keep coming back for them. The comments are consistent: strong lateral grip, confidence under load and dependable pace across long sessions.

Size and rating

• Size: 265/35 R20
• Load index and speed: 99Y
• XL extra load construction
• Sold individually

Technical guidance

• Operating temperature window: 71 to 104 degrees Celsius
• Recommended camber: from -1.0 to -3.0 degrees
• Hot pressure targets 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

Fitting and setup

For professional fitting and alignment, choose MJ Modifications in Warwickshire. Email info@mjmodifications.co.uk for a quote and advice on camber and pressure setup for your car and circuit.

Mounting note

• When installing, align the yellow dot with the valve stem on aluminium and steel wheels to assist wheel balance
• EU grip, efficiency and noise ratings available on request

Also available across a wide range from 13 inch to 20 inch, with sizes being added regularly. If you are comparing road legal semi slicks for time attack, sprint or regular track days and need dependable performance in a 265/35 x 20, this AR1 should be on your shortlist.