I have been looking at doing this too.... from what I can gather the best way to figure out where to put the rod would be to measure the thickness of your tires bead and place it there with a little spacing..... ( I just designed a set of wheels at work and this is how I figured out where it should go, there is no standard across wheel sizes but the larger the dia of the wheel the thicker the bead seems to average)
I would also think the welding the inner side (center of wheel) of the rod would create a ramp for the bead to slide over, leave the outter ( bead side) alone this may help keep the tire in place.. it may also make it harder to get the tires off but that is the point....... IMO
I have been thining of putting two on my rims just to see if I can get my 16.5" wheels to work like every other kind of wheel. Sense Im broke and cant afford inner air locks and dont really like DIY for driveability.
Last edited by GMKLR50; April 25th, 2012 at 06:09 AM.