These GPM replacement tires are designed as 1.0 inch adhesive-mount crawler rubber tires for TRX4M scale models, matching the 50.8mm x 22.8mm size used on TRX4M Ford Bronco fitments. Construction uses a super-soft butyl rubber compound and a standard foam insert to provide low-speed grip and improved tire support for scale trail driving.
Key design notes from the manufacturer include a 25-degree super-soft rubber profile claimed to increase grip, internal reinforcement for tear resistance, and a non-slip butyl formulation distinct from TPU or TPR. The tires come with foam inserts to maintain shape and stability once mounted on appropriate 1-inch wheels.
For setup and tuning, these tires serve as a low-speed traction upgrade: choose a foam density that matches your weight and suspension tuning, and mount them on compatible 1.0 inch rims using adhesive mounting practices common to scale crawler tires.
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