Associated RC18T Rear Narrow Radial Tyre Upgrade with 30g Insert AR893R30G by GPM  [AR893R30G/GPM]

Narrow radial tyre for RC18T rear

This tyre pair is a scale replacement intended for the Associated RC18T rear axle and comes as a matched pair with a single 30g insert each. The rubber narrow radial profile is aimed at refining rear traction and handling in 1/18 short-course setups.

Fit and installation notes:

• Confirm the tyre matches the Associated RC18T rear rim dimensions prior to fitting.
• Insert the 30g core into the tyre before mounting to ensure correct seating and balance.
• Make sure the tyre is fully seated on the rim, check wheel rotation, and trim the bead if clearance requires it.

Tuning guidance:

• The 30g insert increases rear stability and evens out traction response versus a tyre without an insert, helping to control oversteer on softer surfaces.
• The narrow radial profile produces a steadier turn-in and can sharpen the rear feel when a more responsive setup is desired.
• Change tyres or inserts one step at a time to assess handling changes and lap time impact.

Maintenance and longevity:

• Check tread and sidewalls for cuts or deformation before each session.
• Clean off stones and grit after running and allow tyres to cool before storage.
• Swap out inserts that show uneven wear or permanent compression.