235/40ZR18 TYRE Nankang CRS

1. Product introduction

The Nankang CRS / CR-S tyre in size 235/40R18 is a road-approved semi-slick designed for drivers seeking high levels of grip during sports road driving, trackdays, historic hill climbs or occasional circuit use. Developed to deliver behaviour close to a competition tyre while remaining suitable for public roads, it is ideally suited to sports vehicles and performance-focused builds.

2. Role of the part

The tyre provides the direct connection between the vehicle and the road. It transfers engine power, braking forces and cornering loads to the ground. On a sports vehicle, a semi-slick tyre such as the Nankang CR-S improves traction, driving precision and stability under heavy demands.

Its tread incorporates two wide circumferential grooves on the inner section, combined with an optimised groove sidewall angle and a rounded groove base. This design promotes water dispersion and improves behaviour on damp or wet roads.

The outer part of the tread adopts a pattern inspired by rally competition tyres, providing excellent lateral grip and improved handling under cornering loads. The intermediate micro-grooves also contribute to rapid heat dissipation during intensive use.

3. Symptoms or consequences of a worn or defective part

• Loss of grip under acceleration, braking or cornering.
• Longer braking distances, particularly on wet surfaces.
• Lack of steering precision and a vague feeling on turn-in.
• Uneven wear that may cause vibrations, rolling noise or loss of stability.
• Increased risk of aquaplaning when the groove depth becomes insufficient.

4. Benefits of replacement

• Restores high grip levels for more effective and reassuring sports driving.
• Improves traction and stability under hard acceleration.
• Optimises chassis feedback thanks to a stiff sidewall produced using a new fibre process.
• Promotes better water dispersion compared with an excessively worn semi-slick.
• Allows warm-up suited to dynamic road or circuit sessions.
• Offers an excellent balance of performance, road approval and recreational sports use.

5. Specifications

• Brand: Nankang
• Model: CRS / CR-S road-approved
• Type: sports semi-slick tyre
• Size: 235/40R18
• Load index: 95 XL
• Speed rating: Y
• Use: sports road driving, trackday, historic hill climb, recreational circuit use
• Design: wide inner grooves for water dispersion
• Outer tread: competition-style pattern for grip under cornering loads
• Sidewall: stiff structure for better chassis feedback and more precise steering
• Delivery: free

6. Vehicle compatibility

This Nankang CRS / CR-S 235/40R18 95Y XL tyre is compatible with vehicles approved to use this tyre size, subject to compliance with the manufacturer's recommendations for size, load index and speed rating.

• Renault Mégane 3 R.S. fitted with 235/40R18 tyres.
• Renault Sport and sports vehicles using 235/40R18 tyres.
• Alpine A110 depending on configuration and compatible rear fitment in 235/40R18.
• Trackday vehicles, sports compact cars and road-approved builds in this size.

Before fitting, it is recommended to check the size marked on the tyres currently fitted and the approvals listed in the vehicle documentation.

7. Conclusion

The Nankang CRS / CR-S 235/40R18 95Y XL is an excellent choice for enthusiasts seeking a precise, high-performance, road-approved semi-slick tyre suited to heavy demands on Renault Sport, Alpine or other compatible sports vehicles.