You have to be careful lifting on those side jacking points as I had one pushed up, tilted and pushing the floor up, by a tire changer using a whole car lift under those points. They will tilt, pushing the floor up if the original jack that comes with the car is not used. It is designed to react the induced moment caused by the designed in offset lift from the jack, thus keeping the lift socket horizontal. That jacking point is designed to react the vertical load only at the outer edge, not under the jacking point in general, as it is attached to the floor only, there are no reinforcing members except at the outer edge. The workshop manual say that if you use a lift or hoist, be careful to not damage the bodywork. The diagram shows no other lifting/jacking points. I guess they forgot that in the design of the car. Pity, as I have two good floor jacks which I use with the 164's. You might be able to use a board under a front member on top of a floor jack, but I haven't looked/tried.
One thing for sure, you have to make sure that the OEM jack is inserted ALL the way into the socket, as if you don't, you could end up having the upper part of the OEM jack tilt toward the car and push against it, potentially causing damage.
I now do my own tire changing with the OEM jack, even when I buy new tires, avoiding any potential damage. Pain/slow, but there you go. At least I don't have to do it often.