Associated RC18T Rear Narrow Radial Upgrade AR893R30G by GPM  [AR893R30G/GPM]

Rear narrow radial tyre for RC18T applications

This matched pair is an RC-scale replacement developed for the Associated RC18T rear axle, each tyre supplied with a 30g insert. The narrow radial rubber profile is intended for precise rear traction tuning and consistent handling on 1/18 short-course platforms.

Installation guidance:

• Verify rim compatibility with Associated RC18T rear wheels before mounting to ensure correct bead seating.
• Insert the 30g core centrally in the tyre before seating on the rim to reduce runout and provide consistent balance.
• After seating, spin the wheel to confirm even rotation and trim any excess bead material for clearance as required.

Tuning notes:

• The calibrated 30g insert increases rear mass and improves mid-speed traction stability compared with running without an insert.
• The narrow radial section sharpens turn-in predictability and is useful when a more responsive rear feel is required.
• Adjust setups incrementally and change only one variable at a time to isolate handling effects.

Inspection and service:

• Inspect tread and sidewalls routinely for cuts or deformation prior to each session.
• Clean tyres after each run and allow them to cool before storage to preserve compound and shape.
• Replace inserts that exhibit uneven compression or structural damage to maintain consistent performance.