Wheel Stud Upsizing

[70']

Has anyone installed the 9/16" wheel studs on a half ton 6 lug 5.5 set up? Really trying to figure out if it will affect the figment of rims...i.e. Will the rim still fit or will the extra diameter prevent the rim from fitting? I seem to recall the holes on the rims have quite a bit of play in them and the tapered end of the lug nut is what centers them up on the lugs. It's a long story on how I ended up here, but here I am. I would like to know if it can be done without causing myself a giant nightmare when it comes time to buy my rims. I know it will require some machining on my new rotors to get the shoulder to press in......anyone know?
Thanks-

[davepl]

No, but I did it on my 8-lug rear drums when I installed front 8-lug rotors from a '72 that were already 9/16" (my factory ones were 1/2" and I wanted the same all the wy around).

Can't help you with specifics about the rotor, because I was on the other end.

[Mike C]

Why? The 1/2" are more than sufficient in strength. Some wheels will be affected but most probably won't. Seems like a lot of extra work for no gain. Most 9/16" lug nuts are duplex (extra long) and they are the most expensive set of McGards.

[davepl]

Originally Posted by Mike C

Why? The 1/2" are more than sufficient in strength.

You'd think so, but GM didn't spend money for nothing and in 1971 they changed from 1/2 to 9/16 on the 2500s, anyway. They must have had a reason.

I doubt there was a rash of wheels falling off 8-bolt trucks, so WHY they made the change I don't know, but GM wouldn't change it for no reason.

I personally wouldn't upsize for strength (I just did it so my fronts and rears were the same). Coincidentally I just had to upsize a B-Body from 7/16" to 1/2" during a Wilwood conversion. So if five 7/16" will hold the wheel on an Impala, you'd think eight 1/2" would do it on a truck!