Aluminium wheels 16.5x9.75x1.5mm M2 (2x)

Slot.it Machining Precision in Every Detail: Aluminium Wheels 16.5×9.75×1.5 mm M2

When preparing a slot car is taken seriously, every component matters. These aluminium wheels from Slot.it (reference SIW16509715AH) are machined with the tolerances that the Italian brand has made its hallmark: concentric surfaces, reliable M2 fixing, and dimensions — 16.5 mm outer diameter, 9.75 mm width, and 1.5 mm offset — designed to fit with the brand's own range of tyres and axles without improvisation.

Main Features

• Material: machined aluminium, lightweight and rigid.
• Dimensions: 16.5 mm diameter × 9.75 mm width × 1.5 mm offset.
• Fixing: M2.
• Pack Contents: 2 wheels.
• Manufacturer: Slot.it (Italy).

Function and Performance

Machined aluminium offers a rigidity that plastic cannot match: the wheel does not deform under the pressure of the tyre or with the heat generated during long sessions, maintaining stable rolling geometry throughout the race. The M2 fixing ensures centring on the axle without play, a critical point for eliminating vibrations that rob speed and precision on the track.

The 1.5 mm offset allows for precise track width adjustment, which makes a difference in competition-prepared cars on Sport track (Scaleauto, Slot.it systems), where track tolerances are more demanding.

Compatibility and Assembly

These wheels are designed within the Slot.it ecosystem, so they integrate directly with the brand's axles and tyres. For assembly, it is advisable to check that the axle is clean and perfectly aligned before tightening the M2 screw; a moderate and uniform tightening torque is sufficient to ensure secure attachment without risking damage to the aluminium.

If used with silicone or urethane tyres, it is recommended to lightly sand the outer surface of the wheel to improve the adhesion of the glue or the tyre compound itself.

Assembly and Preparation

• Check axle alignment before assembly.
• Clean the wheel surface with isopropyl alcohol before mounting the tyre.
• Use a tyre lathe to equalise the diameter once mounted, if maximum concentricity is desired.
• Tighten the M2 screw with the appropriate Allen key; avoid excessive tightening.

Common Mistakes

• Mixing wheels from different batches without verifying that the diameter is identical on both: small differences create imbalance on the rear axle.
• Not turning the tyre after mounting: even if the wheel is perfectly machined, the tyre may not be perfectly concentric without a lathe pass.
• Over-tightening the M2: aluminium can deform in the housing area if too much force is applied.

Ideal for…

Enthusiasts preparing their Slot.it cars for club competition or simply wanting to elevate the precision of their assembly above standard plastic wheels. They are also a common choice among builders looking to standardise measurements in their club car fleet.

Frequently Asked Questions

Are these wheels compatible with axles from brands other than Slot.it?

It depends on the axle diameter and type of fixing. The M2 thread is a relatively common standard in the slot racing world, but it is always advisable to check the diameter of the central housing before assuming compatibility with axles from other brands.

What tyres does Slot.it recommend for these wheels?

Slot.it offers a wide range of tyres specifically for their wheels. We recommend checking the tyre references from the same brand that fit an outer wheel diameter of 16.5 mm and a width of 9.75 mm to ensure the correct fit.

Is it necessary to turn the tyres after mounting them on these wheels?

It is not mandatory, but highly recommended if maximum concentricity is sought. Even with a perfectly machined wheel, the tyre may present small diameter variations that can only be corrected with a slot lathe.

Does the pack include M2 fixing screws?

The available information does not specify whether the screws are included. We recommend checking the exact contents of the pack before placing an order or verifying it with us.

What type of track are they designed for, Sport or Universal?

As a Slot.it component, they fit particularly well in assemblies intended for Sport track (compatible with Scaleauto or Slot.it tracks), although the wheel itself is not limited by the type of track, but by the car and axle on which it is mounted.

Slot.it aluminium wheels 16.5×9.75×1.5 mm with M2 fixing, pack of 2 units — precision-machined for slot car racing. Designed to work seamlessly with Slot.it axles and tyres, these wheels deliver consistent concentricity and rigidity for club and competition use on Sport track systems. A reliable upgrade over standard plastic wheels for any serious slot car builder.