Wheel offset calculator courtesy 1010 tires .com

Custom wheel spacers www.Motorsport-Tech.com   www.WheelAdapter.com

 Care and feeding of your 6UL wheels

• Inspect your wheels before you mount tires for the first time. A scratched wheel with a tire on it is not warranteeable.
• Torque lugs to vehicle manufacture recommendations. If that information can not be found 85 ft-lbs ( 108Nm)
• After first drive on brand new 6UL's, retorque once. Retorque lugs after every track session or autocross day
• Wash with mild soap and water. Strong degreasers will stain the finish
• Check track wheels for roundness and cracks every time you replace the tires. Track wheels get bent, it's a fact of life :) New radial runout spec is .025" lateral runout spec .015. Replace at .090 radial, .060 lateral
• 6~ 8" 6UL's can be single plane balanced for track use. The 9 and wider might require dual plane balance (weights on front & back) due to the extra width.

• No 6UL's are hub centric except our Spec Miata and Spec E30 specific 15x7
• No wheel, including 6UL's "requires" hub centering rings if the wheels are made correctly
• The purpose of a centering ring is to facilitate installation. Once the wheels are torqued, they are just along for the ride and neither support or transmit load.
• Aftermarket wheels typically have two standardized hub center bores ("CH") that allow the use of hub centering rings to adapt to various marques
• 5 lug wheels(including 6UL) typically 73.1 CH
• 4 lug wheel (including 6UL) typically 67.1  CH
• 949 Racing offers optional aluminum hub centering rings
• Plastic hub rings tend to melt with brake heat encountered in high performance environments
• http://949racing.com/hub-rings-73.1mm.aspx
• http://949racing.com/hub-rings-6ul-15.aspx