| depends how careful you are. Knowing how many scratchy, pointy, oily bits mountain bikes have on them i'd be very careful. There should be plenty of room with the wheels & saddle off, assuming you have quick releases.
The other alternative is one of those high rear carriers that works using straps - no tow bar required, but i'm not sure if it would foul the spoiler on a Cooper/S - does anyone know the answer to this as i already have one of these carriers which i've not been able to use for the last 2.5 years 'cos of the roof spoiler on my Fiesta Zetec-S? |