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Big Chin · 07-03-2012, 10:26 AM

Could be a few things... I don't know how relevant to your car they are...

But it could be the brake lines... as it gets hotter they get spongier, I have stainless steel lines... stops the line from flexing...

Could be the brake booster/pump...

07-03-2012, 10:26 AM	#3
Big Chin 5th Gear Member Join Date: May 2004 Location: Toronto - Waterloo Posts: 1,082 Car: 98' E39 BMW 540i	Could be a few things... I don't know how relevant to your car they are... But it could be the brake lines... as it gets hotter they get spongier, I have stainless steel lines... stops the line from flexing... Could be the brake booster/pump... __________________ Maxbimmer FeedBack