some infomation about OZ 3 piece rim
While an elite look is key and often what drives an investment in 3-piece wheels, O.Z. approach to produce technically correct wheel components is what truly justifies this investment. Know what makes your custom 3-piece wheels the high tech choice that they are.
O.Z. 3-piece wheel components - wheel center, inner rim section and outer rim section - are produced in the same facility, with the same machinery, and using the same technology as F1 race wheels. These components make up the foundation of a quality, custom 3-piece wheel program. Rim diameters are available in 18", 19", 20", and 22" with inner rim widths of 5.5" to 9.5" and outer rim widths of 1" to 4" possible.
Precise wheel assembly is performed at The Tire Rack using an exacting process that maintains and enhances the structural integrity originally built into each individual wheel component. O.Z. supplies a proprietary titanium fastener specific to its 3-piece wheels to ensure the highest level of structural integrity. Titanium bolts alone do not guarantee a properly assembled wheel and tightening these fasteners by hand, or using ordinary power tools, does not result in repeatable torque accuracy. Thus, The Tire Rack uses a factory-certified Ingersoll Rand DC Electric Fastening System to tighten O.Z.'s proprietary fasteners. The assembly torque of these critical titanium fasteners is controlled and repeatable to less than 1/2%. The Tire Rack's fastening system produces traceable measurements of torque to spec every time. In fact, wheels custom-assembled at The Tire Rack are shipped with a computerized print out that shows in detail the settings used to assemble each wheel. Proper torque (fasteners tightened to spec so they won't break or loosen) and run-out (radial and lateral roundness for vibration-free rides) are recorded.
Once assembled, each O.Z. 3-piece wheel gets a unique serial number noted on a sticker placed on the inside of the wheel near the valve stem.
So the next time you see an O.Z. 3-piece wheel, it's okay if you show a little respect and do some staring. These are wheels of distinction.