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I apologise if this is in the wrong section. Feel free to move it if it is.
Just a theory I came up with last night.
I know running bigger/smaller wheels affect speedometer readings. Since I've been running 13" wheels on low profile tyres. My speedo reads 80mph when my actually speed is 70mph. Am I right in thinking that for every 70 miles I travel on a motorway my mileage clock will give out a false reading? In this case, the clock will show 80 miles but I've only actually done 70 miles?
Just a theory I came up with last night.
I know running bigger/smaller wheels affect speedometer readings. Since I've been running 13" wheels on low profile tyres. My speedo reads 80mph when my actually speed is 70mph. Am I right in thinking that for every 70 miles I travel on a motorway my mileage clock will give out a false reading? In this case, the clock will show 80 miles but I've only actually done 70 miles?