Royal Floor Sweeper
Join Date: Jun 2008
Location: The Sticks, South Carolina
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Originally Posted by santamac
I have an 08 xb with 18
' wheels and my speedo isshowing about 3mph faster what might I do to correct?I used a gps to ck.
The stock lug pattern: 5x114.3mm (AKA-> 5x4.5 inches)
Lug bore/center bore: 60.1mm
--Significant for the use of hubcentric rings when mounting aftermarket rims (and also making sure a wheels centering hole isn't too small for a second gen xB).
Original steel wheels (steelies): 16x6.5 45mm offset
Weight: around 20-22 pounds (have heard varying reports and have not weighed one accurately)
--Weight is rim ONLY. Tires are heavy too.
Original tire size: 205/55/16 (205mm face, 55 side ratio, fits on 16 inch rims)
Overall rolling diameter: 631.9mm
It is "best" for accuracy of the speedometer, odometer, and on-board computer readings (like MPG) to be as close to that overall diameter as possible.
The best chart for that is: EddNog's xB 2.0 Wheel & Tire Chart - Scion xB Forum : 2nd Gen Scion XB Forums
Try to stay in the greens.