X5 4.6is gives a ride to F10 M5
According to Motor Trend report X5 4.6is was caught pulling a F10 M5 on a trailer at Nurburgring. Not sure what happen to the M5 that it has to be towed.
The new M5 is supposed to have modified 4.4L twin turbo engine from X5 M with lighter parts and more hp than the X5 M.
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