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      03-23-2017, 03:28 PM   #50
BMWRog
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Drives: 2014 M6 Convertible
Join Date: Feb 2017
Location: Oxfordshire, U.K.

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The bristles on the brass coloured wire brushes are comparatively soft compared to your basic hard steel ones. I did say not to go at it too hard! The insides of the standard exhaust tips are not exactly highly polished, but using this kind of brush LIGHTLY, will get off the hard baked on cr*p. Then you use the cloth buffing wheel with a slightly abrasive paste, e.g. T-Cut, Solvol Autosol, etc., and you will ultimately get a nice smooth reasonably shiny surface which is easy to keep clean, and looks good. The inside of the standard tips will never be a mirror finish, unless you get 'em plated, but they'll look better than average.

We've had some pretty wet and dirty wet weather here recently so my car's filthy, but when I get it clean I'll try and remember to take a pic of the pipes and post it...
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