Tamiya 50390 - RD 3645 Rear Sponge Tyre for F103/103GT Competition Grade [50390]

Tamiya 50390 - RD 3645 Rear Sponge Tire SP-390

Price:

£7.77

Brand:

Tamiya

Model:

50390

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Spares / Hop-ups - Tamiya - F103

Competition Rear Sponge Tyres for F103/103GT

The Tamiya 50390 - RD 3645 Rear Sponge Tire is produced for the F103 and 103GT chassis to provide a consistent contact patch and predictable handling through corners. The sponge compound delivers a balance of traction and control for race settings.

Notable Features of the Tamiya 50390 Rear Sponge

Compatibility: Specifically intended for use with Tamiya F103 and 103GT models.
Material: High-grade sponge compound for secure grip on flat track surfaces.
Performance: Helps maintain rear stability during aggressive cornering.
Durability: Built to offer repeatable performance over multiple race sessions.

Are these tyres suitable for outdoor tracks?

They are best on smooth, sealed surfaces; rough or abrasive outdoor tracks will accelerate wear and reduce grip compared with indoor circuits.

How do I prepare them before racing?

Clean any mould release or dust, check the tyre roundness, and fit securely to the rim. Some racers opt to seat the tyre under slight load before final glueing.

Can setup changes affect tyre behaviour?

Yes. Suspension setup, toe and camber adjustments will change how the sponge tyre wears and how much grip it generates, so tune incrementally when switching compounds.