TRAXXAS TRX4M 1-inch Widened Trail Crawler Tires TRX4MZSP1213 by GPM  [TRX4MZSP1213]

1/18 TRX4M scale widened tyre set

Aftermarket widened tyres designed for slow-speed, technical crawling on 1/18 TRX4M-compatible models. The tread compound is butyl rubber paired with multiple foam insert options and a built-in reinforcement ring to improve support and reduce tearing under demanding use.

Notable physical details from the supplier are a tyre size of 60mm x 25mm, an 80-degree hard sponge pre-installed in the tyre body, and six 60-degree softened sponges provided for tuning. The tread uses a super-soft 25-degree rubber compound that the maker claims gives about 35% more grip over plastic tyres in their tests.

Fitment advice: these tyres are for 1-inch wheels; for some 1/24 cars such as SCX24, fitting a 1-inch wheel is required before installation. The outer clamping shape includes an extended tongue and longer screw locations to aid mounting and help keep the wheel secure when clamped.

Tuning and installation: the set lets you switch between a firmer insert and softer sponges to adjust sidewall stiffness versus compliance. Use the 80-degree insert when greater support is needed and the 60-degree sponges when you want more conformity and grip. The reinforcement and butyl compound also help limit water-related slip and improve tear resistance compared with some softer plastic blends.