Probably but you would need to check that the wheel fits and the overall tyre/wheel is within the 2.5% tolerance recommended for overall diameter.

Or you could buy a full size wheel for your car, i assuming its the same as the CX-5 i have were the well only fits a space saver?

To fit the full size wheel i have packed the boot floor by 40mm using builder roof insulation, the celox stuff, but i tow a caravan so a space saver is no use.

A space saver is available for the CX so i would assume the same applies to the 6?

But price is a eye watering £325.

i bought a set of four OE wheels and tyres for £650 with only 1K miles on the tyres, you might consider this if you use winter tyres and have storage space.

Thanks for the excellent advice. Gives me a few options.