Aluminium Wheel 16.2x8.5mm.

Precision and Lightness in Aluminium: the Scaleauto Lightweight Wheel for 1/32 Competition

Within the aluminium spare parts catalogue of Scaleauto for 1/32 scale, the wheel SC-4049F25 meets one of the classic demands of the most discerning tuners: to minimise rotating mass without sacrificing rigidity or dimensional accuracy. With measurements of 16.2 x 8.5 mm, it adapts to setups that require a compact profile and millimetric fit.

Technical Features

• Measurements: 16.2 mm diameter × 8.5 mm width
• Axle Compatibility: designed for 2.38 mm axle
• Fixing: M2.5 screw included
• Weight: 1.10 g (Lightweight version)
• Material: machined aluminium
• Scale: 1/32
• Brand: Scaleauto

Function and Performance

In competitive slot racing, every gram on the wheels has a direct influence on acceleration, cornering response, and the overall balance of the car. The Lightweight version of this wheel is designed precisely to minimise rotational inertia: by reducing the weight of the wheels, the wheel-tyre assembly responds more nimbly to changes in speed, resulting in finer tuning and tighter lap times.

The machining in aluminium ensures concentricity and a uniform contact surface for the tyre, preventing vibrations that could destabilise the chassis in high-speed sections of the track.

Compatibility and Assembly

The inner diameter is calibrated for the standard 2.38 mm axle, common in numerous 1/32 competition platforms. The fixing via M2.5 screw facilitates disassembly and adjustment during preparation sessions, without the need for specialised tools beyond a screwdriver or corresponding Allen key.

Before mounting the tyre, it is advisable to check that the wheel rotates without eccentricity on the axle. A small adjustment of the fixing screw can correct tenths of a millimetre that, on track, make a difference.

Common Mistakes

• Over-tightening the M2.5 screw: this can deform the axle or hinder subsequent disassembly. Tighten firmly, but without forcing.
• Mounting tyres of inappropriate width: always check that the tyre profile is compatible with the 8.5 mm width of the wheel.
• Not checking concentricity: after assembly, rotate the axle by hand and observe for wobble before taking it to the track.

Ideal for…

This wheel fits particularly well in preparation projects aimed at club or championship competition, where regulations allow the use of aluminium wheels and seek a balance between lightness and durability. It is also an interesting option for those looking to explore advanced tuning without jumping to more exotic materials.

Frequently Asked Questions

What axle diameter is this wheel designed for?

It is specifically designed for 2.38 mm axles, which is one of the most widespread standards in 1/32 slot racing cars.

What type of screw does it include for fixing?

It incorporates an M2.5 screw to secure the wheel to the axle, allowing for agile mounting and dismounting during preparation.

What is the exact weight of this wheel?

The weight is 1.10 g per unit, thanks to its Lightweight construction in machined aluminium.

What real advantage does a Lightweight wheel offer over a standard one?

Less rotating mass means lower inertia: the car accelerates and brakes more nimbly, and cornering response improves, especially on technical circuits with many direction changes.

Is it compatible with silicone or foam tyres?

The wheel accommodates both types of tyre, as long as the tyre width is compatible with the 8.5 mm width of the wheel. Always check the measurements before mounting.

Is it sold in a pack or individually?

The reference SC-4049F25 corresponds to a single unit. If you need to equip all four points of the car, you will need to purchase the necessary units according to your setup.

The Scaleauto SC-4049F25 is a lightweight aluminium wheel measuring 16.2x8.5mm, engineered for 2.38mm axles and secured with an M2.5 grub screw. Weighing just 1.10g, it is a go-to choice for 1/32 slot car racing enthusiasts focused on reducing rotational mass and improving lap times. A precision-machined spare part ideal for competitive club racing and advanced slot car setup.