20x11 ProSpeed soft tyres

Tires 20x11 ProSpeed Soft: grip and consistency on every lap

Within the world of competitive slot racing, the choice of tire makes the difference between a car that rolls and a car that flies. The ProSpeed Soft 20x11 (ref. SWPS1SW) are soft compound tires —Shore 18— designed to extract the maximum grip available on the track and faithfully transfer every correction from the driver to the miniature asphalt.

Features and function

• Dimensions: 20 mm diameter × 11 mm width.
• Compound: Soft, Shore 18. A low durometer indicates a particularly soft rubber, resulting in a larger contact area and increased traction.
• ProSpeed profile: designed for consistent performance throughout the session, without abrupt grip degradation.

Track behaviour

Shore 18 is one of the softest compounds on the slot market. This means that the tire slightly deforms under load, increasing the contact patch and improving traction on corner exit. On tracks with smooth surfaces or in conditions where the natural grip of the track is low, this type of compound can yield real tenths of a second per lap.

The flip side of the coin is wear: soft compounds wear out faster than hard or medium ones, especially on abrasive tracks or during long sessions. For timed competition or short heats, the Soft is the logical choice. For long-duration practice, it may be worth alternating with a harder compound.

Recommended applications

• Club or championship competition where the regulations allow for free compound.
• Qualifying sessions where lap time is more important than durability.
• Cars with setups where the 20×11 dimensions fit the rear axle.

Mounting and preparation

As with any soft compound slot tire, we recommend a prior lathe sanding to ensure that the diameter is perfectly concentric and the surface is uniform. A well-prepared tire maximizes the virtues of the compound; one mounted without concentricity completely neutralizes them. If you use glue to secure it to the rim, apply a minimal amount and allow sufficient curing time before sanding.

Frequently asked questions

What does Shore 18 mean in a slot tire?

Shore is the unit of measure for the hardness of an elastomer. A value of 18 indicates a very soft compound: it deforms easily under load, which increases the contact area with the track and, therefore, the available grip.

What cars or chassis are these tires compatible with?

They are compatible with any setup whose rear axle accommodates a wheel of 20×11 mm dimensions. Always check the inner diameter of the rim and the axle width before mounting.

Do they wear out faster than hard compounds?

Yes. Soft compounds offer greater grip at the expense of a shorter lifespan, especially on abrasive tracks or during long sessions. For intensive training, it is advisable to consider a medium or high hardness compound.

Is it necessary to sand the tires before use?

It is highly recommended. Lathe sanding ensures the concentricity of the tire, eliminates manufacturing irregularities, and homogenizes the contact surface. The result on track is significantly better than mounting the tire unprepared.

How many units are included in the pack?

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

The ProSpeed Soft 20x11 tyres (Shore 18) are a top choice for slot car racing enthusiasts seeking maximum grip and traction. With a soft compound durometer of 18, these 20×11 mm slot tyres deliver outstanding contact patch performance on smooth or low-grip tracks. Ideal for competition, club racing, and qualifying sessions where lap time matters most. Available at Ministry of Hobby, your specialist slot car and scale modelling store.

Information not found

It has not been possible to confirm with the available sources the exact manufacturer of these tires or the number of units included per pack. If you have this information, we encourage you to consult us to complete the sheet.