R32 space saver is the same 18" version as the GTi one, i checked with my mates R32 one when i fitted my S3 front brakes  
....That's useful to know  

Good point to raise, Martin  

If I get a puncture on my front axle with AP's I'll have to swoppsy with a rear wheel and then put the spare on the rear - So now I know this can be done and I simply hadn't thought about it before reading this thread. 
Musical 
chairs wheels!