soo... in case anyone is interested!
After measuring, I decided that 16" Steel wheels with 215/55 R16 tyres should fit (vs 17" Alloys with 215/50 R16). And they do
… except the wheel bolts do not fit snugly into the bolt holes in steel wheels because they have the shoulders on them for the deeper bolt recesses in Alloy wheels. This was the next problem. Every parts site insists you put in your registration number to identify suitable bolts for your car, which means that you cannot get the radius seat type bolt you need because all the wheel bolts that Volvo spec are for Alloy wheels. I measured what was needed and eventually managed to source the right thing from a bolts supplier. Should anyone go down this route you will need 20 x Wheel Bolts M14 x1.5, radius Seat, 35 mm Thread length. Total price £21.49
So now all sorted with 4 new winter tyres on steel wheels and the regular ones on Alloys stored in the garage till Spring
