Here is a set of great looking wheels at an affordable price for your GTM. These wheels use a new manufacturing process called flow forming to make them both light and strong.
This specialized process begins with a low pressure type of casting and uses a special machine that spins the initial casting, heats the outer portion of the casting and then uses steel rollers pressed against the rim area to pull the rim to its final width and shape. The combination of the heat, pressure and spinning create a rim area with the strength similar to a forged wheel. During Flow Forming, the pressure applied to the cast rim actually changes its mechanical properties, so its strength and impact values become similar to those of a forged rim. That translates to up to 15% less weight when compared to a standard cast wheel. The resulting grain structure within the alloy of the wheel is linear, flowing in a single direction.
This grain structure pattern, combined with the exceptional quality of casting required for the process, gives the rim area of the wheel huge mechanical strength, and elongation. As a result of these mechanical characteristics, Flow forming is able to reduce the thickness of the rim area resulting in reduced weight, without compromising strength and resistance to impact.
Wheel Set Part Number: #26249 Front Wheel Size (Diameter x width): 19"x 9" Rear Wheel Size (Diameter x width): 20"x 12" Front Wheel Backspace: 6.95" (50mm Offset) Rear Wheel Backspace: 8.49" (51mm Offset) Wheel Lug Pattern: GM style 5 lug x 4.75" bolt circle Material: Flow forged aluminum Color: Gunmetal
Note: Please allow 2-4 weeks for shipping. Shipping price off $149 is for continental U.S. orders only. Actual shipping cost for orders outside of the U.S. will be higher. Please call for details on international orders.