Ralph
New member
Anyone checked the speedo and mileometer against a gps yet? just wondered how far out it is.
I think UK law says the speedo must never read less than real speed and never more than 10% OTT. So if PPL find their MTs are about 10% over that close to the limit of being illegal. I'm pretty sure however there is no dyno in the MOT so no one would ever check.I think its EU regulation that speedo's read 10% fast, for the European market at least. I eliminated this on my Tiger by fitting a front sprocket 1 tooth bigger. Consequently it makes the odometer read slightly less than distance travelled, but that's not really a bad thing.