BMWs are optimistic for speed by at least 5-6%, so your reading may be only 2-3% lower than actual.
I'll be honest - that tire package totally changes the look of the X5 - makes it look a lot like a Chev Blazer.
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'04 X5 3.0 5AT with 300,000+km - Black
'08 535xi 6AT with 290,000+km - Titanium Silver
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