hi again just checked my odometer reading this morning and seems a different %out than the speedo can someone who's good at maths please confirm I have done my maths correctly
I have 245/75/15 tyres on ( a land rover defender) from the original standard tyres of 235/85/16 this gives a 7 % under readings on the SPEEDO-This corresponds to the GPS reading (although the speedo jumps about more than a modern car so hard to be exact-Hey someone commented I should use a calendar instead
)
The odometer this morning was showing 9.7km reading compared to the 8.6 km reading from the GPS.
This I take as 11.34% increase on the odometer worked out by:
9.7-8.6 = 1.1
Then 1.1 divided by 9.7 = 0.1134
then 0.1134 x 100 = 11.34
thats a 11.34% increase in the oddometer reading
am i right?
wungun 
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