Quote:
Originally Posted by wpoll
I took note of the speedo vs BC menu #8 V: value today...
I should have verified these values via a GPS at the same time, as these values are with a set of tyres at pretty much minimum tread depth. I want to perform the same check once I replace the tyres so I can gauge the variation over the life of the tyres. This will affect any correction factor I might code, as no one correction factor will read TRUE speed for the entire life of a set of tyres. I'd like to set a correction factor that doesn't ever result in a speedo reading UNDER the true speed...  |
If the true speed is calculated using new factory size tyres on the factory wheels, then , as the tread wears, it will only mean your speedo indicates higher as the diameter gets smaller with wear,
never the other way round,
unless of course you put larger diameter tyres on than standard.
Be interesting to how your indicated speed compares to GPS speed,
assuming that’s accurate.