Slick Ultragrip - 19.5 x 13

NSR Slick Ultragrip Rear Tyres 19.5 x 13: Precise Grip for Your F1 Single-Seaters

Tyres are, along with the guide and the motor, one of the three elements that most influence the behaviour of a slot car. NSR knows this well, which is why it develops its Slick Ultragrip range with a specific compound aimed at providing the largest possible contact surface with the track, without sacrificing consistency or durability during long sessions.

Function and Performance

The reference NSR5285 corresponds to the rear tyres in size 19.5 x 13, designed for NSR's own F1 chassis. The Ultragrip compound stands out for its grip capability even on tracks that have some accumulated dirt, and its slick profile —smooth, without tread— maximises the contact area with the running surface.

As rear tyres, their role is crucial for both traction and stability during acceleration. A well-mounted and centred tyre reduces vibrations, improves the car's response, and allows for precise chassis height adjustments.

Compatibility

These tyres are designed for the F1 models of NSR that use the size 19.5 x 13 on the rear axle. Before purchasing, it is advisable to check the specifications of your specific model's chassis and axles to ensure that the diameter and width fit correctly with the installed wheels.

Mounting and Preparation

To get the most out of them, we recommend carefully mounting the tyres to ensure they are perfectly centred on the wheel, without any wobble. A small imbalance can translate into vibration at high speeds. Once mounted, it is common to run them through a lathe or tyre sander to ensure concentricity and achieve a uniform diameter on both rear wheels.

If the track is particularly clean and the natural grip of the compound is not sufficient, many preparers apply a small amount of traction additive to further enhance the grip of the Ultragrip.

Common Mistakes

• Not checking the final diameter after mounting: two tyres with different diameters cause deviation and erratic behaviour in a straight line.
• Over-tightening the wheel: this can deform the tyre and alter its contact geometry.
• Using too much additive: excessive product softens the compound and can dirty the track, affecting other cars.

Frequently Asked Questions

How many units are included in the NSR5285 package?

The available information does not specify the exact number of units per blister. Please check the product sheet in-store or contact our team to confirm before placing your order.

Are they suitable for Scalextric or Ninco tracks?

These tyres do not depend on the type of rail: they are a component of the car, not the track. They are compatible with any circuit as long as the NSR F1 car they are designed for is suitable for that rail.

Do I need to true the tyres after mounting them?

It is not strictly mandatory, but it is highly recommended for competitive use. Truing ensures that both rear wheels have exactly the same diameter and that the contact with the track is uniform.

Can traction additives be used with the Ultragrip compound?

Yes, but in moderation. The Ultragrip compound already offers a good level of grip as standard; the additive can help on very slippery circuits, but it is advisable not to overuse it to avoid damaging the track.

When should these tyres be replaced?

When irregular wear is observed, loss of diameter compared to the initial mounting, or when the car starts to show less traction and stability than usual on that circuit.

NSR Slick Ultragrip rear tyres (ref. NSR5285), size 19.5 x 13, are a go-to choice for slot car enthusiasts running NSR F1 chassis. The Ultragrip compound delivers consistent traction on both plastic and wood tracks, making them a reliable option for club racing and home layouts alike. Proper mounting and optional truing ensure peak performance and straight-line stability.