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There's no practical adjustments you can make yourself. A dedicated speedo shop can calibrate it for you. If you're at all curious, a handheld GPS unit can now be had for under $70 that will tell you the speed you're going in ANY car with a very high degree of accuracy. I have one of these things (a Garmin Gecko), and it's first use paid for it. I bought a 912 about six months ago and suspected its speedo was off. The GPS confirmed this, showing I was really going 75mph when the speedo read a tad below 65mph. I now simply drive at an indicated 55mph when I need to worry about John Law on our mostly 65mph freeways, which is an actual 63mph. Interestingly, the speedo is dead accurate at 30mph, and reads HIGH below that (25mph on speedo is really 20mph). On my SB, with 165SR15 tires, the speedo is perfectly accurate at 70mph, and reads high below that. 30mph on the speedo is actually 25mph. --- "Iturzaeta , Joseph " <JIturzaeta@kbhome.com> wrote: > I was just wondering, is there anyway to adjust the > speedo for different > size tires? > I know that the diameter will only change the > overall speed very > minimal, but when you get pulled over and your > speedo says one thing and > the cops radar gun says another..... > > ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ > List info at http://www.vwtype3.org/list | > mailto:gregm@vwtype3.org > ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ > > __________________________________ Do you Yahoo!? Read only the mail you want - Yahoo! Mail SpamGuard. http://promotions.yahoo.com/new_mail