Sizes of Tires and Rims for the GMC


Syclone GMT300 (1991-1992)

Tire size Tire pressure Rim size Wheel fastener Center bore
245/50 R16 2.4 bar Front: 8Jx16 ET41
Rear: 8Jx16 ET13
Nuts: 5 x 120.65 (PCD) 70.3 mm
255/45 ZR17 2.6 bar Front: 8.5Jx17 ET45
Rear: 8.5Jx17 ET15
Nuts: 5 x 120.65 (PCD) 70.3 mm
Front: 255/45 Z R17
Rear: 285/40ZR17
2.6 bar Front: 8.5Jx17 ET45
Rear: 9.5Jx17 ET35
Nuts: 5 x 120.65 (PCD) 70.3 mm

Syclone GMT300 (1991-1992)

Tire size
245/50 R16
Tire pressure
2.4 bar
Rim size
Front: 8Jx16 ET41
Rear: 8Jx16 ET13
Wheel fastener
Nuts: 5 x 120.65 (PCD)
Center bore
70.3 mm
Tire size
255/45 ZR17
Tire pressure
2.6 bar
Rim size
Front: 8.5Jx17 ET45
Rear: 8.5Jx17 ET15
Wheel fastener
Nuts: 5 x 120.65 (PCD)
Center bore
70.3 mm
Tire size
Front: 255/45 Z R17
Rear: 285/40ZR17
Tire pressure
2.6 bar
Rim size
Front: 8.5Jx17 ET45
Rear: 9.5Jx17 ET35
Wheel fastener
Nuts: 5 x 120.65 (PCD)
Center bore
70.3 mm