RT Soft tyres 24x12

Grooved soft rubber for maximum performance on track: Scaleauto RT Soft 24x12

The Scaleauto RT Soft 24x12 mm tyres (ref. SC-4729) are made from soft rubber with a grooved surface, a combination designed to optimise grip on the track and improve the car's behaviour during acceleration and cornering. They are a common replacement in club setups and in preparations aimed at regular competition.

Main features

• Dimensions: 24 mm diameter × 12 mm width.
• Compound: RT Soft rubber, soft hardness for greater contact surface.
• Grooved finish: the tread grooves facilitate dirt evacuation and help maintain consistent grip throughout the session.
• Manufacturer: Scaleauto, a reference brand in slot car parts and competition cars.

Function and performance

Soft rubber is the usual choice when maximum available grip is sought, especially on well-maintained tracks with clean surfaces. Scaleauto's RT Soft compound offers good deformation under load, which expands the contact patch with the track and translates into more effective traction during corner exits.

The grooved surface serves a dual purpose: on one hand, it provides additional flexibility to the tread; on the other, it helps keep the tyre free from dirt particles that could progressively reduce grip during the race on a smooth compound.

Compatibility and mounting

With a width of 12 mm and a diameter of 24 mm, these tyres fit standard rear rims of 1/32 scale slot cars that accept this size. Before mounting, it is advisable to always check the rim dimensions to ensure a proper fit. Post-mounting truing — with fine sandpaper or a lathe — allows for precise diameter adjustment and ensures perfect concentricity, which makes a difference on track.

Mounting and preparation

• Mount the tyre onto the rim ensuring it is well seated and without play.
• True if necessary to match the diameter with the tyre on the opposite side.
• Clean the surface before the session with a slightly damp cloth to activate the compound.
• Avoid contact with aggressive solvents that may alter the rubber properties.

Ideal for…

Club racers competing in categories where soft rubber is allowed, preparers looking for a high-grip tyre for competition setups, and enthusiasts wanting to explore tuning their cars beyond the stock configuration.

Considerations

Soft compounds are more sensitive to accumulated dirt on the track than hard ones. On circuits with a lot of dust or on unmaintained plastic tracks, it may be advisable to consider a medium hardness compound. Additionally, soft rubber tends to wear out somewhat faster, so it is wise to carry a spare set during long sessions.

Frequently asked questions

How many units are included in the SC-4729 pack?

The available information does not specify the number of units per pack. We recommend checking the product description in our store or contacting us to confirm before placing your order.

What is the difference between a grooved tyre and a smooth one?

The smooth tyre maximises the pure contact surface with the track, while the grooved tyre introduces small channels that help evacuate dirt particles and provide a bit more flexibility to the tread. On very clean tracks, the smooth tyre usually has an advantage; in more variable conditions, the grooved tyre maintains grip more consistently.

Is it necessary to true the tyres after mounting?

It is not strictly mandatory, but it is highly recommended in competition. Truing ensures that both rear tyres have exactly the same diameter and rotate concentrically, which translates into more balanced traction and better car response.

What rims are these tyres compatible with?

They are compatible with rims that accept a tyre of 24 mm diameter and 12 mm width. Always check your rim measurements before mounting to ensure an optimal fit.

Can I use these tyres on Scalextric or Ninco track?

The type of track does not dictate the tyre, but rather the measurements of the car's rim. These tyres can be used on any circuit as long as they fit correctly on the rim of the model you are preparing.

Scaleauto SC-4729 RT Soft 24x12 mm grooved slot car tyres — soft compound rubber tyre with ribbed tread for 1/32 scale slot cars. Designed for club racing and competitive setups where maximum grip and consistent performance are required. Compatible with standard 24×12 mm rims. A trusted choice among slot racing enthusiasts looking for reliable traction and race-ready preparation.