geoff pine said:
right i have read this explanation before sort of makes sense but if this method works , why the need to pay for electronic converters i have seen adverts just for kmp to mph with out the speed delimiters .a dial which has the mph reading in the right place with enlarged central hole so there would be no need to remove the neddle whould be a lot cheaper. :? :? why would aclock for a140mph car only have 110 mph dial on it. what does the uk gtir clock read to my sons micras reads 110mhp how confusing .
There's no real need to electrically convert it unless:
1. You're regularly planning on going over 110mph, and when you do really feel the need to know how fast you're going :lol: Unlike me who just grins

2. You want the car to clock up in miles instead of KM.
Regarding your second question, my cars an import, so was limited to 112mph when it rolled out of the factory. As such I'm guessing there was no need to have a clock that went any higher than 110mph/180kph. I'm not certain on that one, but it makes sense.
Paz