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139 0311 Wheel 2 Z

The center piece where the lug nut holes are located is visibly thickerthan other non-stressed areas of the wheel. Note that the slots abovethe lug nut in the photo are flanged to add further strength to thecenter section.
The Technology of Racing Wheels

The center piece where the lug nut holes are located is visibly thickerthan other non-stressed areas of the wheel. Note that the slots abovethe lug nut in the photo are flanged to add further strength to thecenter section.  View Related Article

 

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