I use a regular shop jack at the factory jack points marked with the arrows. I use a block of wood cut to size to fit the top of the jack and the slot on the flat surface right in front of the jack arrow. Your piece of wood effectively covers the factory jack point. By the way the jack arrow is a raised triangle in the plastic skirt under the doors. I, like you, had wondered how to change the wheels with something other than the jack that came with the car. This method is used by a number of people who change tires at the auto cross circuit. ALSO BE VERY GENTLE WITH THE JACK. MAKE SURE THAT THE WOOD BLOCK IS THE ONLY THING IN CONTACT WITH THE CAR. Once the wheel is up in the air I use my spare as a jack stand of sorts. I'm sure there is a more refined way of doing this but this method works. S. I need to do some wheel changing on my '93 M5. My wife's '95 525ia has some seriously heavy duty places under the suspension to lift the car with a pump (NASCAR) type jack instead of the inadequate factory side jack. The M5 looks more "fragile" underneath. Is there any safe place to crank the car up without damage and without using the body jack points? Thanks for any help out there. Dennis.