Team Associated RC18T Rear Standard Radial Rubber Tire (40° insert) by GPM AR899R40G  [AR899R40G]

Rear radial tire for RC18T

This rear radial tire is an RC-scale replacement designed for Team Associated RC18T rear fitments, supplied by GPM as AR899R40G. The tyre uses a rubber compound and a 40° insert as specified in the product name, intended to re-create the intended profile and sidewall support for the RC18T rear axle assembly.

Installation is straightforward on compatible RC18T wheels: remove the worn tyre from the rim, seat the new tyre over the rim bead, position the insert to match the desired sidewall stiffness, then trim or tuck the bead as required for your wheel type. No special tools are required beyond basic tyre levers and a file or hobby knife for finishing.

On the track this tyre serves as a tuning element: the included 40° insert helps control how the tyre holds its shape under load, affecting rear traction and steering balance. Use it as one variable among tyre compound, chassis setup, and suspension settings when adjusting rear end grip and rotation on carpet or hard-packed surfaces.