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Old 01-22-2013, 01:50 PM   #34
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Join Date: Jul 2012
Location: Illinois
Posts: 2,153
My Ride: BMW 323i Sedan
This is what the tire calculator gave me, anyone understand this?? Old New

Diameter 631.4mm 643.3mm
Circumference 1983.6mm 2021mm
Poke 61.6mm 81.6mm
Inset 141.6mm 121.6mm
Speedo error 0% -1.85%
Reading at 30mph 30mph 29.45mph
Reading at 60mph 60mph 58.89mph
Ride height gain 0mm 5.95mm
Arch gap loss 0mm 5.95mm
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