These are Official BFGoodrich Mud Terrain T/A KM3 1.9" Tires Specifications: Advanced X2S3 Compound Fits 1.9" Wheels Outer Diameter: 4.09in / 103.9mm Width: 1.29in / 33.0mm Inner Diameter: 1.81in /46.0mm Each Tire Weigh: 2.15oz / 61.0g
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