The specs for this BBS RW-T Diamond Silver Wheel are 18x9 6x139.7 20mm offset
with a 77.8 center bore. The BBS RW-T wheel is a one piece counter pressure
cast wheel featuring a custom 8 spoke design. BBS is
considered the leader in wheel manufacturing and engineering
technology. BBS is dedicated to pursuing the highest level of technology
possible and then applying this experience to the street. The BBS
Performance line flow forming uses hydraulic rollers to achieve greater
density in the
material structure for the rims of the BBS light alloy wheels. The rim
well of the over 300 to 350 degree centigrade hot wheel blank is kept in
a continuous rotational motion under high pressure and at high
temperatures, and subsequently rolled out over a cylinder in one work
step.