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      05-25-2016, 04:27 AM   #3
Crassus
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United Kingdom
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Drives: 19' G20 X3 20i & 19' M140i
Join Date: Sep 2015
Location: England

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M-Sport models have stiffer suspension and typically come with bigger rims 19 or 20 versus 18 or 19 inches for non M-sport models.

In my opinion there is no substitute to test driving. Spend at least 20-30 minutes driving each on both bumpy and smooth roads. I also suggest driving a more comfort biased SUV such as the X5 or GLC to give other reference points.
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