4 Semi-slick Tyres 20x11

Four semi-slick tyres 20X11 to push your slot car to the limit of grip

Tyres are one of the elements that most influence the behaviour of a slot car, and the semi-slicks demonstrate this with every lap. With their mixed-profile tread —between pure slick and patterned tyre— they offer a highly appreciated balance in both practice sessions and club competition: constant grip, predictable response on corner entry, and reduced wear compared to softer slicks.

This pack includes 4 tyres in size 20X11, reference CXM085. A complete replacement for the rear axle —or combined front and rear depending on the car configuration— ready to mount without modifications.

Features and highlights

• Pack format: 4 tyres per unit.
• Size: 20X11 (outer diameter x width).
• Type: Semi-slick, with mixed-profile tread.
• Reference: CXM085.

Track behaviour

The semi-slick profile combines smooth areas —which maximise contact surface and grip— with small bands or channels that help manage heat better and maintain consistency over long runs. The result is a more versatile tyre than the pure slick, especially suited for plastic tracks or for drivers seeking consistency over maximum performance for a single lap.

The size 20X11 is common on rear axles of competition and prepared slot cars, although exact compatibility depends on the rim diameter and the available space in the chassis. Always check your car's measurements before mounting.

Mounting and preparation

To get the most out of new tyres, it is advisable to spend a few minutes on their preparation:

1. Mount the tyres on the rims and ensure they are well centred and free of play.
2. If you have a lathe or grinder, run the tyre to ensure concentricity and eliminate any small manufacturing irregularities.
3. Clean the tread surface with isopropyl alcohol to remove any release agent residues before the first lap on track.
4. Perform a few warm-up laps at a medium pace before demanding maximum grip.

Frequently asked questions

How many tyres are included in the pack?

The pack contains 4 tyres, sufficient to equip the rear and front axles of a slot car, or to have spare tyres available depending on the configuration you use.

What is the difference between a semi-slick tyre and a slick?

A slick has a completely smooth tread, maximising the contact surface but being more sensitive to heat and wear. The semi-slick incorporates some type of texture or channel that provides greater consistency throughout the session and a slightly broader setup.

How do I know if the size 20X11 is compatible with my car?

You need to check the inner diameter of the tyre (which corresponds to the rim diameter) and the clearance between the body and the chassis. The reference 20X11 indicates an outer diameter of 20 mm and a width of 11 mm; ensure that your car accommodates those dimensions before mounting.

Do I need to grind the tyres before using them?

It is not essential, but it is highly recommended if you are looking for maximum performance. Grinding ensures perfect concentricity of the tyre mounted on the rim, resulting in a more balanced and predictable car on track.

What types of track do they work best on?

Semi-slicks adapt well to both plastic tracks (Scalextric, Ninco, Carrera) and wooden or resin tracks. Their versatility makes them a solid option for mixed use or for drivers who want a single set of tyres for different circuits.

The CXM085 semi-slick tyres in 20X11 size are a reliable choice for slot car racing enthusiasts looking to upgrade their grip and consistency on track. These four tyres offer a balanced performance profile suited to both club competition and recreational driving, fitting a wide range of slot car axle and rim configurations.