[67_Deuce]

Ive ran across some rims for cheap. They are 15 x 12 with 4'' back spacing. will these fit with any type of tires without tubbing the rear? The car I wish to put them on is a '67 chevy II. The bolt pattern is 5 x 4.5 is that GM?

[F-1Rodder]

If you have a 12" rim with 4" back spacing, that means that you have 8" of the rim extending outward of the mounting surface. Add about 2' of tire bulge and another 1/2" of clearance between tire and fender well....that makes 10 1/2" of material extending outward of your mounting surface. Now measure the widest width of the tire, probably about 14". Now measure the narrowest space between your drum brakes and the inside of the fender well. This will determine if you can get the tire onto the mounting surface...I doubt there is 14" available so you would have to narrow the axle enough to get the clearance. This would mean that the amount you narrow is the amount you would have to tub.

The bolt pattern is GM.

[67_Deuce]

Thanks

[bigkid]

My memory says,
4.5 on 5 - small ford, dodge and most 5 lug utility trailers
4.75 on 5 small gm
Correct me if I'm wrong, please.

[Bluepen]

I'm working with a narrowed Ford 9" right now and the bolt pattern is 4 1/2" on 5 so you are right Bigkid.