Associated RC 18T Rear Radial Tire AR889R30G 30 degree Insert by GPM  [AR889R30G]

18T Rear Radial Tire Overview

This 1:18 rear radial tire is built for Associated RC 18T on-road applications and is supplied as part AR889R30G from GPM. The tyre uses a standard rubber compound and includes an internal insert to help the profile remain stable during cornering and acceleration.

Fitment targets the Associated RC 18T platform; the radial shape and 30 degree specification influence camber response when mounted on common 18T rear hubs. Mount using standard 1/18 on-road tyre procedures, taking care to seat the bead and centre the insert to avoid imbalance.

On track this tyre serves as a baseline for rear traction tuning, offering predictable lateral grip and consistent feedback for suspension and shock adjustments. Keep the tread clear of debris and recheck insert seating after initial runs to maintain uniform performance.