Rodge

It's designed for a full size 16" wheel. Wider wheels will squeeze in, but raise the carpet slightly, as you say. I've wondered about this. There's a 17 year old unused space saver in the back of my Focus and a 5 year old full size tyre in my Octavia that's done all of 5 miles. So I've got 80 odd quid's of full size rubber ageing away. I'd considered swapping it for one of the used tyres when I buy new, but I want to switch from Energy Savers to CrossClimates. And all 5 of the 5 year old tyres passed the MOT.