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Speedometer out of calibration?

2437 Views 5 Replies 6 Participants Last post by  RTCarroll84
Hi guys, riding my '04 TW around I've found that every single street side radar sign that tells you your speed is saying that I'm going 3-4 mph less than what my speedo reads. So if I'm going 30 mph on my gauge, then I'll actually be doing 26 or 27. Maybe that is why I'm always being tailgated. Anyway, does anyone know if there is a way to adjust the speedometer to read correctly? I know on my scooter a ******* way of doing it was taking apart the speedo and moving the needle while holding onto the shaft with needle nose pliers. Is there a more elegant solution? Thanks!
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I would definitely agree with every one's thoughts thus far. I would say there is a speed suffer built in, and that non stock tires or tire wear can account for some loss as well. I would also second the Vapor setup. I have one on my DRZ and it is wonderful. You can add in a heat sensor as well to get an actual engine temp. I'm not sure if they would approve but you could alternatively tap a hole and put the liquid sensor in it to get an oil temp.
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