2 R3 wheels 17.7x9

R3 Wheels 17.7x9 — precision in every millimetre for your slot car

Wheels are one of those components that are underestimated until they are changed. A wheel with the exact measurements ensures that the tyre sits evenly, that the wheel-tyre assembly is perfectly centred, and that the forces transmitted by the motor to the ground are consistent on every lap. This pack includes 2 R3 wheels of 17.7x9 (reference CXM023), ready to mount.

Features and function

• Measurements: 17.7 mm diameter × 9 mm width.
• Format: pack of 2 wheels.
• Reference: CXM023.
• R3 design aimed at correct tyre retention and vibration-free running.

Mounting and preparation

Before mounting the tyre, it is advisable to check that the inner diameter of the wheel fits precisely on the car's axle. A loose fit can cause misalignment and vibration; an excessively tight fit can deform the wheel. Once the tyre is mounted, it is recommended to true the assembly to ensure perfect concentricity and the minimum possible runout.

Common mistakes

• Mounting the tyre without checking that the wheel is free of burrs or surface irregularities.
• Not truing the assembly after mounting, which can cause oscillations at high speed.
• Confusing the outer diameter with the inner diameter when selecting the wheel: always verify all three dimensions (outer diameter, width, and inner axle housing diameter).

Ideal for…

Preparers looking to standardise the rear or front end of their slot cars, enthusiasts replacing worn parts, and club competitors who need to maintain a consistent measurement standard between practice and race sessions.

Frequently asked questions

Does the pack include tyres?

No. The pack contains only the 2 R3 17.7x9 wheels. Tyres must be purchased separately, choosing the appropriate profile and compound for your track type and category.

What does the measurement 17.7x9 mean?

The first value (17.7 mm) indicates the outer diameter of the wheel and the second (9 mm) its width. These dimensions determine the compatible tyre and the footprint that will be left on the track.

What type of axle are these wheels compatible with?

Compatibility depends on the inner diameter of the wheel housing. We recommend checking that measurement against your axle specifications before placing the order, as we do not have further factory data on this.

Is it necessary to true the wheels after mounting them?

In competition, it is highly recommended. Truing ensures that the wheel-tyre assembly rotates perfectly concentrically, eliminating any vibration or imbalance that could detract from performance in corners.

Can I use them on both the front and rear axles?

It depends on the available space in your car and the axle measurements for each position. The dimensions 17.7x9 are common on the rear axle of many slot car setups, but always confirm compatibility with your specific model.

Looking for 17.7x9 R3 slot car wheels for your build or race preparation? This pack of 2 CXM023 wheels offers precise dimensions for a balanced wheel-tyre assembly, reduced runout and consistent lap times. Compatible with a wide range of slot car axle setups — an essential upgrade for club racers and serious hobbyists alike.

Information not found

It has not been possible to confirm the original manufacturer of these wheels or the exact axle compatibilities from reference CXM023. If you need that information, we recommend contacting our team before placing the order.