Improbcat

I'm looking for a cheap set of 15" rims with less backspacing than stock to mount my autocrossing tires on. Only problem is I can't find the stock backspacing! So to keep me from having to pull a rim in the freezing cold to measure it, could someone tell me what the backspacing is on the stock 15" steelies (and stock 15" alloys too if you happen to know)?

Also in case I can't find a set of cheap rims, does anyone know what the thickest wheel spacer is I can use without swapping to longer studs?

Improbcat

Never mind, right after I posted this I found out that it is an offset of 39