 Wide Excel 17 inch chromed steel (36 spoke) rims are laced with thick 4.4 mm spokes to silver painted aluminum alloy hubs, necessitating the use of tube-type tires.The front brakes of the GT1000 were derived from the other SportClassic models, and had two Brembo floating calipers with 30 and 32 mm diameter thermally insulated pistons.They were semi-floating discs with a diameter of 320 mm and a thickness of 4 mm.