Exhaust tips

I have a new 2007 Cadillac EXT and I wanted to know the diameter of the Exhaust tips I would need to get so that they would fit on my truck any help would be appreciated thank you

Measure your existing exhaust (outside diameter) from outside to outside.

Katzmanscaddy instructions.
 
Inlet is the opening that the exhaust enters and outlet is the opening the exhaust exits. Normally you will see exhaust tips with as an example:  2 1/4" inlet and 2 1/2" oulet. This gives the impression of having a larger diameter tail pipe than there actually is. You also need to know OD for outside diameter and ID for inside diameter.

To figure out which extension to buy to need to measure the OD of the tail pipe, this is the diameter from outside edge to outside edge then you get an extension with that inlet size or a bit bigger so that it fits over your existing pipe. It is sometimes hard to measure if the pipe is slant cut so since you are putting on an extension anyway you could put a straight cut on it then measure, then go get a extension. You also need to worry about extension length because you don't want a pipe sticking 6 inches off the bumper either. I think that 9" is a pretty common length.

You just need a tape measure and some patience and you will figure it all out.

Thanks guys i appreciate it

I have a GMC Suburban as well as a Deville. I got a high quality chrome extension for the truck from Gibson. It was a very well made piece with an integrated clamping system, made from aircraft stainless. It was not cheap, about $60. The Sub has a tail pipe that is almost 3" OD so that is a hard piece to find  but Gibson had it, I think it was 2.75" inlet and 4" outlet and 9" or 12 " long. It fit very snuggly right over the existing talipipe and looks just like the OEM piece for the 2000's. Go to the Gibson web site and you will see them there, slant cut, rolled ends a lot of diferent styles:
http://www.gibsonperformance.com/tips.asp    I'll try and post a pic of mine too.

Just installed Gibson Stainless Steel Headers and waiting for the exhaust to arrive, did i fail to mention I sawzalled (sp?)  the catalytic converters off and gettiing it welded for gibson extreme dual exhaust? should add atleast 35-40 hp with everything for about 1200 bucks. Pics to follow. should be badass

How's your upgrade doin'? Post some pics too.
I got a new rolled edge borla exhaust tip which spice up the quality of my car.