Thanks for all of your comments. I had the same thoughts with respect to not fitting the space saver wheel to the front and my thoughts were related to the differential arrangement on a front wheel drive vehicle. The diameters of the Space Saver Tyre is smaller and therefore the rolling circumference is different to the original wheels so the differential will be a problem if fitted to the drive wheels as well as ABS etc.
I have driven cares for over 50 years and never had a flat tyre until a couple of weeks ago. Tyre knackered, so the the hideous Tyre repair 'Squirty Stuff' was completely useless. Had to get the AA out to get me to a garage at 11pm. No staff to fix it had to get a hotel for the night and deal with the problem the next day. ALL of this inconvenience, time and financial implication would have been avoided if only I had a spare wheel. So my wife's car has a space saver wheel but I am still trying to source a decent priced spare for my car. How car manufacturers get away with these hideous repair kits is beyond me, It is a matter of personal safety. If you have a bad flat tyre in the middle of the country side at night, as I did, then you are very very vulnerable as is the vehicle if you leave it. Some Naughty Boys will most likely remove all of your wheels especially if they are alloys so further expense. Clearly the manufacturers do this arrangement to reduce costs and charge you for a spare wheel as an extra. This is a flawed saving because the repair kits cost are similar to a spare wheel. Another thing to note about these hideous squirty things is the once they are used the 'Squirty Stuff' goes through the inflating compressor (at least it does on a Jaguar) and when used, once the whole compressor and squirty stuff has to be replaced. The damn compressor flow volume is so low it takes about Half an hour to inflate a deflated tyre. These compressors only use is to inflate bicycle tyres.
Absolutely Stupid arrangement.
