BANGN6

Hi there fulla's. Real keen to get some 18x10's (at least!) for my 32 GTR. Completely undecided as to what type just yet, but aside from this, was just wondering if any of you guys have "stretch" fit semi slicks to your wheels? By what I've read on this thread so far it seems as if stretching tyres isn't as popular over in Australia as it is here in NZ but thought I'd ask anyway. I've got some Bridgestone RE540S 245/40/18's just sitting in my shed and wondered if I could put them to use on some 10's. Obviously 245's will go onto 10's, and I used to have 235's on 10's on my old Cef, so the size thing I don't imagine being a problem. The question being I guess, will semi's stretch?? Or are the side walls on them just too hard compared to your joe average street tyre? Anyone had experience with this?