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      06-20-2018, 03:06 PM   #67
M2joey
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Drives: M2, 335is, X5 M50i
Join Date: Feb 2017
Location: Ashburn, VA

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Quote:
Originally Posted by m2ruder View Post
Not true. The video examples posted here are the carbon/Ti tips rattling. Correct/incorrect installation cannot fix this issue. Now if there is rattling from it hitting the support then that is a failed install. There should be 1/2-3/4 inch clearance between the top and bottom of the pipe and the tunnel and brace. Warm up temps causes the exhaust to move rearward due to eat expansion. Not it could be hitting the rear heat shield but it is at its shortest length at cold start
No, this is true! They are not the tips rattling. Can the tips rattle if loose, yes.

Yup! Incorrect installation, cutting the exhaust pipe to short or long is one of the main issues. If the clamp also comes loose it needs to be replaced - easy to do if you are driving on the track. I went through three clamps, I finally just had it welded. Issue resolved!
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