Rubber Tyre 25x13mm Slicks New Shore 30 for Wheels ø19-21mm

Scaleauto Shore 30 Slick Tyres: Real Grip for 1/32 Competition

Within the range of rear spare parts from Scaleauto, these slick tyres in Shore 30 hardness have a clear place: they are the choice when maximum contact with the track is sought without sacrificing response. The reference SC-4749SH30 comes in a pack of 4 units, ready to mount on your rear axle wheels.

Technical Features

• Outer Diameter: 25 mm
• Width: 13 mm
• Wheel Compatibility: wheels with a diameter of 19 to 21 mm
• Hardness: Shore 30 (New Shore 30) — soft-medium compound
• Profile: slick (smooth, without shoulders or grooves)
• Units per Pack: 4
• Scale: 1/32
• Category: rear spare part

Function and Performance

The slick profile eliminates any interruption in the contact patch: the entire width of the tyre works on the track at all times. Combined with the Shore 30 hardness, the compound offers controlled deformation under lateral load, resulting in better traction during acceleration and greater stability in corners. It is a balance designed for technical tracks where corner exit makes the difference.

The Shore 30 hardness sits in the soft-medium range of the Scaleauto catalogue. Compared to harder compounds, it sacrifices some durability in exchange for a wider grip window, making it especially useful on wood or plastic circuits with a good level of grip.

Compatibility and Mounting

The tyre is designed to work with wheels with a diameter between 19 and 21 mm. The mounting is straightforward: it fits onto the wheel with a slight radial tension that ensures it does not shift during the race. Adhesive is not required in most standard mounts, although in competition setups, some drivers opt for a minimal amount of contact glue on the shoulder to ensure the exact position.

Before running, it is advisable to true the tyre around the wheel to ensure a perfectly uniform diameter: any variation, no matter how small, generates vibration at high speed and penalises performance on fast sections.

Common Mistakes When Preparing Slick Tyres

• Not truing the mount: even new tyres present small eccentricities. A couple of minutes with sandpaper or a lathe makes a difference.
• Mounting on out-of-range wheels: using this tyre on wheels outside the ø19-21mm range can cause the tyre to be too tight (risk of breakage) or too loose (loss of concentricity).
• Ignoring cleaning: soft compounds easily pick up dust. Cleaning the tyres before each running session significantly improves grip from the first lap.

Ideal for…

These tyres fit particularly well in club or championship competition setups where consistent performance on the rear axle is sought. Their size of 25x13mm and slick profile make them suitable for 1/32 scale GT, prototype, and touring car bodies that mount medium diameter rear wheels.

Frequently Asked Questions

How many units are included in the pack?

The pack SC-4749SH30 includes 4 units.

What does Shore 30 mean in practice?

The Shore scale measures the hardness of the rubber compound. A value of 30 indicates a relatively soft compound, which translates to greater deformation under load and, therefore, a larger contact area with the track. The result is more grip, especially useful on tracks with a good level of adhesion.

Do I need adhesive to secure the tyre to the wheel?

In most standard mounts, it is not necessary: the radial tension of the tyre on the wheel maintains the position. In competition setups, some drivers apply a small amount of contact glue inside the shoulder to ensure perfect concentricity.

Is it necessary to true the tyre after mounting?

Yes, it is highly recommended. Truing eliminates small eccentricities from the mount and ensures that the diameter is perfectly uniform around the circumference, which reduces vibrations and improves stability at high speed.

On what type of tracks does this compound perform best?

The Shore 30 performs particularly well on wood or plastic tracks with a good level of grip. On very abrasive tracks or those with a lot of accumulated dust, a harder compound may offer greater durability, although at the cost of some initial grip.

Is it compatible with SPORT track systems?

The track compatibility depends on the chassis and guide of the car, not the tyre itself. This tyre is a replacement designed to mount on a wheel and is independent of the track system used.

The Scaleauto SC-4749SH30 is a set of 4 slick tyres measuring 25x13mm with Shore 30 compound, designed for rear axle hubs ranging from 19 to 21mm in diameter. A soft-to-medium durometer delivers excellent grip and consistent traction on 1/32 scale slot car tracks, making these tyres a reliable choice for club racing and competitive setups on both wood and plastic circuits.