2012 BMW F10 535i n55 vs 2008 BMW E60 n54 in the mountains. The F10 is stock and only has a muffler delete and the E60 535i is FBO with MHD stage 2 Flash software mourned 400 ponies to the crank. Both are big luxury 5 series but both cars handle very well for their size and weight.

Disclaimer- This is not a RACE! We are just cruising up mountain roads doing legal speeds with safety in mind. Please never forget to share the roads.

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