not worried too much just like comparing apples to apples.

yes tire dia changes and using the std. 10/32" tread thickness - 2/32 which is considered worn out = 8/32*2 = 1/2" in overall difference from BEST to WORST case in tire size. This difference on a 215/60/15 which is 26.157" using that as a center line for the tread would make the worst case inaccuracy of 25.907/26.407 = 1.93% difference.

32.46 (pump) * 1.0193=33.08 (worst case %) vs navi of 34.9

would find it very interesting if the driver on his next long trip (200+ miles) & compare his odom vs the mileage markers then use that difference and compare to his NAVI info. My Jetta, strange as it may seem, travels 1.025 miles more when I compared the odom vs mile markers on a 700 mile trip I took.

also if you traveled in a 100 ft circle for 1 mile how far would the NAVI report your distance traveled???

just wondering how good satellites and computers are getting at tracking us.

Thanks for your time and hopefully future info from AH owners.

Money is not evil. Good people do good things with money and bad people do bad things with money. Which will you be???

The ultimate Altima = 2.5L V6 twin turbo diesel(150hp/250tq) with 60 hp HEV and LARGE battery.


Great style & looks with power and great MPG