Join Date: Jan 2009
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The chance of profile will give a slightly different rolling radius, and so will effect your Speedo slightly and so effect the calculations done by the computer. iirc it's only about 1 mile in every 30 difference tho (depending on tyre dia), so not really noticeable
According to my satnav the speedo is spot on.
Currently in Jonlucpicard's garage:
2010 Grand Scenic 1.5 dCi Privilege Tomtom