Does this happen if so what makes and models.

Ta

It's happened in my mates car but it won't happen in mine.

Buckets that fit are a very (VERY) tight fit.

I sat in them and just could not get comfy .. too small (and no, I havn't got an ar$e like the back end of a bus, just an average size bloke).

He's also ripped one of them while squeezing it in.

There's some nice green ones in the back of the book that I would like to copy.