245/35R20 Nankang AR-1 (AR1) 95Y XL Extra Load Semi Slick Track Day Tyre – Road Legal E Marked MSA List 1B 100TW – 245/35 ZR20 | 245 35 20 20 Inch – Motorsport/Time Attack Circuit/Racing – Sold Individually

245/35 ZR20 AR-1 semi-slick. Street approved circuit rubber for serious pace

Looking for a 20 inch semi slick that delivers confidence and lap time without sacrificing road legality? The AR-1 in 245/35 ZR20 95Y Extra Load hits the sweet spot for track-day regulars and fast-road drivers. E marked and MSA List 1B approved, this competition-bred radial gives relentless dry grip, superb stability and repeatable performance session after session.

We run AR-1 on our own builds and customer cars, and feedback is consistently positive. Strong turn-in, predictable breakaway and excellent heat tolerance make it a favourite for PB chasers and club racers alike.

• Size: 245/35 ZR20. Load and speed: 95Y XL reinforced
• Street legal semi-slick for circuit use. Ideal split: approx 10 percent fast-road and 90 percent track work
• Single rubber blend across the range with new depth of 5.5 mm for stability and even wear
• 17 inch and larger 100TW production features a Kevlar belt layer for improved consistency on high-energy circuits such as Nürburgring and Spa
• E marked with MSA List 1B status for UK club motorsport
• Championship proven as control rubber in series including M3 Cup, 330 Challenge and Classic VW Cup, plus podiums in CSCC New Millennium and 750 Motor Club Club Enduro

Why enthusiasts choose AR-1

• Serious dry grip and strong lateral support from a stiff carcass
• Consistent feel over long stints when managed in the correct heat window
• Fast warm-up compared with many rival circuit-focused options
• Confidence-inspiring feedback for predictable limits and clean exits

Tech guidance and setup tips

• Mounting tip: align the yellow balance mark with the valve stem to reduce weight needed for balancing
• Temperature sweet spot: 71 to 104 degrees Celsius
• Camber recommendation: between negative 1.0 and negative 3.0 degrees depending on platform and use
• Hot pressure targets by vehicle mass:
  • 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 sizing

AR-1 sizes span 13 through 20 inch with new fitments added regularly, making it a go-to choice for hot hatches, performance saloons and GT coupes needing a 245/35/20 semi-slick.

Road data

EU grip, efficiency and noise information available on request.

Professional fitting available

Want these installed and set up correctly? Book fitting and alignment with MJ Modifications in Warwickshire. Email info@mjmodifications.co.uk for a quote and availability.

Sold individually. Price is per tyre.

Search-friendly terms customers use

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