Off Set ver. Disc Caliper

[ck5566]

Probably been asked & answered but one more time. I here 3 nub rims 6 lug, 3.5" center hole is No good for Disc Brakes but the 4 nub rims 6 lug, 3.5" center hole is OK for Disc Brakes in that the amount of the "Off Set" has something to do with them fitting better or does the "Back Space" also have something to do with it. Whats the skinny about the fitment and how does the "Off Set" and or "Back Spacing" come in to the fitment. I will add a pic for the understanding of it.

Thanks in advance.

[lolife99]

It's the shape of the backside of the 4-nub wheel that allows clearance for the disc brake caliper that the 3-nub wheel does not have.

[ck5566]

Originally Posted by lolife99

It's the shape of the backside of the 4-nub wheel that allows clearance for the disc brake caliper that the 3-nub wheel does not have.

I got 2 sets of the 3 nub rims 6" & 5.5" wide's but would like to see a 4 nub rims back side to compare it to my 3 nubers. Just for a visual look for future reference.

[lolife99]

This thread shows the back side:
http://67-72chevytrucks.com/vboard/s...d.php?t=716314

[ck5566]

Originally Posted by lolife99

This thread shows the back side:
http://67-72chevytrucks.com/vboard/s...d.php?t=716314

With my other Post in a Thread started by someone else I ask a similar question and got some answers. With the pic above (3) rims I can see that where the rim mounts it seems to be taller which pushes the mounting area further away from the contour of the rim for the needed space of the caliper. I get it now!