Genuine rc-car-online spare/option part.The optimal parking lot or race tires for your FG Racetruck model.Type Width Outer diameterFront 64 mm 153 mmRear 78 mm 153 mmGlued on original FG-Racetruck rims (rear tire with extension to the inside), incl. foam rubber insert,FG rim with 18 mm square drive and reinforcement ring.Attention: From experience we warn against using rims and extensions from another manufacturer.Since the Mammoth tires provide a very good grip, the rim and bonding are extremely stressed. Due to the high torque load in relation to the bonding of tires on large models, an occasional check in this regard and possibly a repair of the bonding (y0067) is inevitable.As a recommendation:The dirtier the track or the colder the temperature, the softer the rear tire should be.Reference for the front tire: With 2WD models this should be one to two stages harder than the used rear tire. On 4WD models, a tire combination with the same shore hardness front and rear is often good to drive.Of course, with Mammoth Supergrip Racetruck tires, the softer the tire, the higher the wear.The Mammoth Supergrip Racetruck tires have a special onroad tread. Whereby these still have an optimal grip after the wear of the tread, and can still be driven for a long time.