These cars can handle up to a certain % increase or decrease in tire OD to correct the speedo, at least seeing what is said on SVTP that is. You don't really need a tune, but just a programmer that can adjust the values in the ECU via the handheld.
I personally try to stick as close to the OE tire OD as I can.
But we need to know tire widths and types of tire you are wanting to run.
Last edited by DirtyD; 06-06-2013 at 05:07 PM.
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