Quote:
Originally Posted by F90POWER
How did it turn out on the X7? 20-30% louder? Any drone when you are cruising on the highway? I think a few people had some drone issues when they did the same thing on their M5s.
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Id say probably 20% louder from the inside and 30% from outside. No drone in comfort and while cruising in sport but under acceleration between 2500-3000 rpm there is some drone. Cold starts now are
