Wheel Backspacing Measurement Tool
This tool was designed and developed by Castle Works Motorsports. It is used to determine proper backspacing when ordering custom wheels.
It is adjustable to fit 15" - 20" diameter tires and select-able wheel widths from 7"-12"
Bolt patters are 5x4.75 and 5x4.5 Additional bolt patterns available on request.
Tool comes complete with all hardware and bolts and is ready to use.
Rigid case with foam inserts, sold separately,is a perfect way to protect the tool during transport. Case is waterproof and very rugged.