I usually run a 15" steel wheel combo on my 68 road runner wih bfg radial ta's.
Its a manual drum brake and steering car. Drives straight as an arrow with no vibes.

I threw on a set of wheel adapters and 18" mustang bullit wheels for now and im experencing some problems. Took it out for a test drive and the front end is darting all over the place and very scary to drive. Almost like all the lug nuts are loose! Everything is tight for sure. Any ideas?? thank you!