Hi all, I have a t6 transporter conversion and the company put 20" alloys on. Whilst under the van today I noticed a space saver bolted underneath, trouble is it's the standard 16" wheel. It's been some time since I had a car with a full spare so I'm not certain that a 16" running on one corner with 3 20" wheels is feasible should I get a puncture. Any advice appreciated, thanks.