I started my apprenticeship in a rootes dealership in the sixties and one of the jobs on an imp service was to change front and rear wheels diagonally and of coarse remember to adjust the tyre pressures,18 front 30 rear,one service I forgot managed to get up to approx 60mph on road test went into a vicious weave before spinning between two cars and ending up at the entrance of a house drive with no damage other than earth and grass under a couple of the wheel rims l drove very gingerly back to the garage broke the tyre beads and removed the debris,made sure it never happened again!

dorsetfreelander wrote:

My old Dad used to carry a bag of cement in the boot of his car in the winter to aid traction, here is another way.

http://www.bbc.co.uk/news/uk-40821915