My mum had a little mishap which has destroyed her wheel so I'm trying to get her back on the road. I thought finding another wheel would be easy but I'm struggling. She has a K12 with 14" 165/70 4x100. Am I right in saying the K12 uses a 5J whereas the K13 uses a 5.5J? It looks like there are plenty of 14" space savers on ebay, are these the same wheel (i.e 5J 14 with a skinny tyre) if so I'll just buy one of those and put a proper tyre on it. Thanks in advance