Hi guys, I would greatly appreciate if someone could advise me if a space saver that I have in my 2015 Octavia VRS - size T125 / 70 R18 could be used as a spare for a Superb Sportline tdi 190, ie is the fitment the same, won’t rub on calipers etc, and will it fit in the storage area under boot floor ok? Many thanks in advance!

Just been and checked in my boot....the factory fit Spare in my Sportline is the same size as the one you've quoted.  I think you're good to go. 

Thank you so much for doing that!