Are the wheels supported by the hub or lugs?

[Scott]

Are the wheels supported by the hub or lugs?

I've got an AWD, if that's different.

Thanks in advance,
Scott

[Daniel454]

They are Hubcentric. 71.8mm center bore if I remember correctly.

[high888]

The weight of the vehicle is loaded onto the entire wheel tire once the lugs are torqued down. The hub helps center the wheel along with the lugs. Once the lugs are torqued, the wheel and hub become as one, almost as if you welded them together. If you just place the wheel on the lugs and then lowered it, without tightening them, they probably would snap if you tried to drive off.

[Scott]

Okay, thanks for the replies.

Maybe you can help me further. I'm trying to think through the effect of wheel spacers.

For instance, the 3 mm spacers offered by billybones:
wouldn't they move the wheel away from the hub, so the hub would no longer be part of the support and the entire load would then rest on the lugs?

I've heard that some vehicles only use the lugs to support the car, but if Dodge didn't design the Magnum that way, wouldn't an upgrade to stronger lugs be a good idea if spacers were used?

[GasGunR]

I believe Bones spacers maintain the hubcentricicity(sp?)

I have Cragar 610s on my car and they are old school lugcentric, no issues.

[Super T]

Bolts are different from screws... When you screw 2 things together, any forces that act on them are borne by the screw directly. When you bolt 2 things together, the bolts only see tension. The resulting friction between the two bolted together parts is what keeps them from moving around. That's the difference between the two by definition. The lug studs act like bolts... There should be no side-to-side (front-to-back or up-and-down in relation to the car) forces on the studs. The "hubcentric" design and the tapered/beveled/rolled edges of the lugs just serve to center the wheel to it doesn't vibrate like crazy when you're rolling. So in a perfect world, you could use infinitely long bolts with infinitely thick spacers and be OK. But our world ain't perfect. You're bound to hit bumps that exert stresses higher than the friction between the wheel and the hub (or spacer if it's in there) can support alone. Then the studs get tested.

Moving the tire out w/ a spacer also puts a bigger bending moment on the upright, a bigger misalignment force on the bearing, yadda yadda. Short answer? 3mm isn't much and it probably won't matter. Don't go crazy w/ spacers though. Also make sure the offset is correct with the spacers included in the calculation or you'll scrub your tires bald a lot faster.

[Daniel454]

While I havent done any research on wheels since I finally decided on and got mine mounted, So I am not sure on the set up you are looking at, but I am THINKING that those 3mm spacers are so you can mount SRT style wheels on a standard R/T....

If that is true, you have a serious problem, as yours is not a standard R/T. The AWD has a MAJORLY different offset...

Now, if I missed something and Billy Bones is offering this 3mm spacer so that some particular rim fits an AWD offset, then I say go for it, I wouldnt worry to much about 3mm, especially since that spacer should allow it to remain hubcentric.

[Scott]

So I am not sure on the set up you are looking at, but I am THINKING that those 3mm spacers are so you can

I'm staying with the stock rims.

Some of the 255 tires vary a bit in section width (that is measured at the sidewall) and might rub the suspension arm near the front wheel. The spacers are a back-up option.

I'm trying to make sense of how the spacers work to see if I'm comfortable with them.

[Daniel454]

Got ya, no problem... I am thinking you will have no problem with 255s based on remarks all over the boards.. I have 255, and have no issue, but I also have aftermarket rims with a lower offset.

[Scott]

I have to pull a wheel on my Magnum to see how it matches the points you guys made...Thanks :)