As for junkyard wheels or finding stock wheels from other cars, the problem seems to be offset. The stock wheels are 4j and ET25, so you'd need a low positive offset wheel if going wider.
Found this on Volvo Forums UK:
Quote:
Personally, for a 15x5.5J, I'd expect an offset of ET15, for 15x6J, I'd want an offset of ET6, or with a 7J wheel, an offset of ET0, all in order to maintain the correct backspacing & thus maintain the turning circle and at the same time, keeping the offset as close as possible to standard as is practical for those widths. From my own experience, whilst 15x7J with an offset of ET-20 looks fantastic, the steering will be very jittery on anything except a smooth road surface, and wheel bearings won't last long...
So all FWD cars with the same PCD are definitely out, as are most wheels from anything modern and RWD. Not a lot of selection out there, but I'll keep looking.
Woodenshoes - Thanks for all of that info. I would like to be period correct in the type of wheel I have - I'm going for the rally look.. I've picked up some Cibies... Putting a wheel that is more suited for a newer Japanese car or an American muscle car isn't all that appealing to me. But being period correct in the size of tire I use isn't important to me, as long as it is safe and performs well. I see in the SS thread you posted, someone recommended Ranger wheels. I found a couple that look decent but all are 14".
Pylon - Let me look into those tires and get back to you. Sounds like a decent deal!