Exhaust tail pipes and MOTs

[Mitsuru]

As some of you may know I'm currently fitting a Nissan 350z back box to
my mk1 Chrysler Neon. The tail pipes have yet to be cut to length.

be careful with the length if they protrude further than the back bumper
you may have an issue when it comes to MOT time!!

Which raises a couple of good questions

What are the rules/regulations regarding how far the tail end of the exhaust
pipe sticks out from the car or the car's bumper?

And what trouble has this caused people?

Pictures are of my actual build.

[megadethmaniac]

can`t imagine that will be an issue and if it is, cut it back to that 45 degree weld. That would be similar to me matrix, just under the bumper and pointing down .

[Mitsuru]

There is no clear and definitive answer but the bumper line is the
usual guide.
http://www.motuk.co.uk/

After checking the website which doesn't say anything, and going off what
Rob has said! I will weight the car as though it had fuel in the tank and a
spare wheel, then it will be out with the plumb line to get the pipe marked

[tractorman]

Remembering a friend from my agricultural college days (1971/2) who had a Mini with an exhaust that stuck out a little too far, I would suggest that the ends should be inboard of the bumper. My friend reversed up to a low wall in a car park, he didn't see the wall, but felt it when the exhaust pushed up and damaged the flange on the manifold!

As for angle on the end of the pipe - I think that's a matter of personal preference rather than being a technical issue. Cut it so that it looks right to you! However, if you aim to cut square and miss the perfect 90deg, it will always annoy you. If you deliberately put an angle on the end, it can't be wrong! Just make sure both ends are in line when looking from the side.