Anyone know the diameter of the pipes on stock mufflers on the tip-side?

dbworld4k · 04-22-2014, 09:53 PM

Trying to install aftermarket tips and need to know what size the outlet pipes are on the exhaust tip side on the OE mufflers.

Dark_Knight_335 · 04-23-2014, 07:25 AM

You could check realoem.com, but my guess would be 2.5 inches for N55 at least.

Dark_Knight_335 · 04-23-2014, 07:40 AM

I lied- 3 inches. If you're going to go aftermarket, you could probably go between 3.5 and 4 inches, depending on how aggressive you like it. Do you have an M-sport diffuser, or any kind of diffuser?

I would take that into account as well.

dbworld4k · 04-23-2014, 09:31 AM

I know that's the size of the tips themselves, but the piping that leads to them from the bumper is different. Our OEM exhaust tips are a kind of slip/clip-on cover system.

I already have a quad tip setup on a stock muffler, but I'm selling a pair of oval exhaust tips that have a 2.25" inlet diameter. Trying to find out if those will weld onto the muffler's tip side.

04-22-2014, 09:53 PM	#1
dbworld4k Banned 583 Rep 2,233 Posts Drives: '12 M3 Join Date: Mar 2008 Location: YYZ iTrader: (5) Garage List 2002 BMW M5 [10.00] 2009 BMW 335i [10.00]	Trying to install aftermarket tips and need to know what size the outlet pipes are on the exhaust tip side on the OE mufflers.
	Appreciate 0 Tweet Quote

04-23-2014, 07:25 AM	#2
Dark_Knight_335 Came to the N55 Darkside 1112 Rep 12,740 Posts Drives: 2011 335 E93 M-Sport Join Date: May 2010 Location: NY/NJ iTrader: (28)	You could check realoem.com, but my guess would be 2.5 inches for N55 at least.
	Appreciate 0 Quote

04-23-2014, 07:40 AM	#3
Dark_Knight_335 Came to the N55 Darkside 1112 Rep 12,740 Posts Drives: 2011 335 E93 M-Sport Join Date: May 2010 Location: NY/NJ iTrader: (28)	I lied- 3 inches. If you're going to go aftermarket, you could probably go between 3.5 and 4 inches, depending on how aggressive you like it. Do you have an M-sport diffuser, or any kind of diffuser? I would take that into account as well. Attached Images
	Appreciate 0 Quote

04-23-2014, 09:31 AM	#4
dbworld4k Banned 583 Rep 2,233 Posts Drives: '12 M3 Join Date: Mar 2008 Location: YYZ iTrader: (5) Garage List 2002 BMW M5 [10.00] 2009 BMW 335i [10.00]	I know that's the size of the tips themselves, but the piping that leads to them from the bumper is different. Our OEM exhaust tips are a kind of slip/clip-on cover system. I already have a quad tip setup on a stock muffler, but I'm selling a pair of oval exhaust tips that have a 2.25" inlet diameter. Trying to find out if those will weld onto the muffler's tip side.
	Appreciate 0 Quote