[lumen8]

You could buy a can of that goop you put in the tyres and plugs a puncture hole, theyve worked for me a few times. Then you would only need to use the space saver if the tyre suffers worse than the typical small puncture which seems to be the most common cause of flats. Some models of cars dont even come with a spare but instead one of those cans.

I have 155 wide space savers in both my BA and AU fairlane, and if I was far from home I wouldnt be too keen on running one on the front. When I travel further I tend to swap it out for a full sized wheel, sometimes even 2 of them if Im going really far. But if you are close to home, dont think you will notice the different height too much if taking it easy, of course youd have to be sensible about it and drive conservatively, like you are supposed to with a space saver.

By the way the BA/BF/FG and territory space savers, which are also 4" rims if I remember right, came with 2 different height 155 17" inch tyre, there is a 70 series and an 80 series. The 80 is a fair bit taller, usually found on later cars and terrys.

Perhaps one of those tyres on your space saver wheel could give you extra height so you are closer to the other wheels... not sure what tyre you would have.