Spare Tire ?s

moparmat2000 said
What year is your GT ?

A 5 bolt 4" circle does approximate to 5 bolt 100mm. Meaning that it will most likely fit. That wheel and rim looks like a mopar FWD 5 bolt 100mm donut spare. I'd say thats better than nothing in a pinch, or a rim n tire that doesnt fit. Matter of fact i remember seeing a set of small bolt pattern rallyes on a dodge neon one time. 5 bolt 100mm circle. Guy told me they were a direct bolt on.

I will be running 15s and 225 60 R 15s on the rear of mine, and i also upgraded to a 5 bolt 4&1/2" circle. I will be using a donut spare out of a mustang GT in my spare tire well.

100mm = 3.937". That's not the same as 4". Yes, you can in fact mount a 5x100mm wheel on your 5x4" bolt pattern hubs. You can usually "get away" with it because Neon's and other 5x100 dodge vehicles use 12mm lug studs, with is .472", so the mounting holes on the wheel are oversize for a 7/16" stud. Of course, when you tighten down the lug nuts they center in the holes thanks to that handy taper they have, and you're placing a side load on all of your lug studs. Personally I think adding an additional shear load to mildly undersized 7/16" wheel studs is a horrible idea.

DartGTDan said
My GT is a '71. I was thinking that little donut spare came from a Neon or similar type car. I'd never trust/put a "5 bolt 100mm" wheel(s) on a 5 on 4" bolt circle vehicle.

I'm looking for a single (1) 14" X 5 1/2" factory Rallye wheel (I have a WTB post) to use a spare, as I know the Rallye wheel will clear my SSBC front disc brakes. Anyone have one?

Good plan, stick with something that's actually 5x4".