Tire size

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GRRNMO

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Is there a chart for a tire size calibration in a 2017 Alltrack?
 
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GRRNMO

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Guess I'll answer myself, lol...from poking around other similar threads it seems that going from 205 55r17 to 225 55r17 isn't a significant enough change in rpm/circumference (3.2%) to warrant adjusting any settings even if there were settings to adjust...at 60mph on a flat road on cruise control on my instrumentation - GPS indicated a speed of 59 on the old tires...at 60mph on that same road on cruise control on my instrumentation - GPS indicates a speed of 61 on the new tires...
 
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Uwe

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VAG has never had a proper provision for calibrating different tire sizes in their instrument clusters. Some of have an table of different "impulse" counts, but this was intended for different transmission and final drive ratios rather than for tire sizes.

-Uwe-
 
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GRRNMO

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Yeah, thank you...I'm a Jeep guy so I am used to tire calibration being a significant issue - my speedometer can be off by as much as 5-8mph in the Jeep when I don't calibrate after going from stock just to 33s...
 
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Uwe

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Understood. But VAG is from a a country where you will fail your bi-annual inspection if you have the wrong size tires on your car, and wrong is any size that's not on the manufacturer's placard in the door jamb.

-Uwe-
 
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