Tyres are not glued however include foam inserts. Gluing recommended before use to prevent shredding. These are designed to fit 1.10 scale 4WD buggies however will not fit all. Please check measurements below before ordering to avoid disappointment. 12mm Drive Hex. 56mm Inner Diameter. 85mm Outer Diameter. 35mm Wide front. 42mm Wide rear. 18mm depth to hex.