Like the 6UL these wheels are low pressure (LP) cast and T6 heat treated allowing a higher tensile strength to be achieved with the same material. The design benefit of the new LP technique is that the engineers can optimize the thickness of each part of the wheel without really needing to allow for material flow. This optimization reduces weight without any decrease in strength. To finish the 6ULR's off the outer rim is rolled between two mandrels and it's slowly drawn into shape in a way not dissimilar from the work of a potter but with the help of CNC to precisely vary the thickness to a few thousandths of an inch based on the results of FEA (Finite Element Analysis).
The end result is a wheel that's about 5% lighter but with substantial gains in strength. The wheels also end up being a bit stiffer and that directly creates more consistent contact patch loading. Few tuners ever think about this but a wheel that's too soft and flexible will actually deflect under hard cornering loads enough to reduce active camber. Stiff wheels are good!
6ULR Wheels are not currently available to order.
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