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Quick Wheel Help

chakis24

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chakis24 Senior Enthusiast

chakis24

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quick question, looking around for new wheels and i saw the option for hub centric yes or no? i going to assume i want hub centric wheels since i have 4wd? just double checking before i place an order. thanks for the help

 

EDIT: also, my wheels are 6 x 5.5 right? on one site its that, and on another it said 6 x 139.7 probably the same measurements just ones inches and ones not, but are both of those correct?

hubbycap Senior Enthusiast

hubbycap

Posted
Posted

It would be desireable to have hubcentric wheels no mater what the number of drive axles. The OEMs are. The centering and the weight bearing is best done on the hub rather than the lugs.

chakis24 Senior Enthusiast

chakis24

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  • Author
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It would be desireable to have hubcentric wheels no mater what the number of drive axles. The OEMs are. The centering and the weight bearing is best done on the hub rather than the lugs.

 

cool, thanks for the help- its much appreciated.

 

do you know what the bolt pattern is by any chance?

alaska511 Senior Enthusiast

alaska511

Posted
Posted
It would be desireable to have hubcentric wheels no mater what the number of drive axles. The OEMs are. The centering and the weight bearing is best done on the hub rather than the lugs.

 

cool, thanks for the help- its much appreciated.

 

do you know what the bolt pattern is by any chance?

 

 

 

6 X 5.5

asilverblazer Senior Enthusiast

asilverblazer

Posted
Posted

Your truck is not hub centric. It is lug centric. Not sure if YOU could make it hub centric, I doubt it. Isn't this why our lugs and lug holes are tapered. The tolerance between the hub and wheel is too great to be hub centric. Less I know them backwards. My '55 is what I believe to be hubcentric, and my newer vehicles are lug centric. The '55 has a machined lip on the hub that matches perfectly to ther center hole of the wheel. Its lugnuts just hold it tight to the face of the hub. (This is hubcentric, no?)

hubbycap Senior Enthusiast

hubbycap

Posted
Posted
Your truck is not hub centric. It is lug centric. Not sure if YOU could make it hub centric, I doubt it. Isn't this why our lugs and lug holes are tapered. The tolerance between the hub and wheel is too great to be hub centric. Less I know them backwards. My '55 is what I believe to be hubcentric, and my newer vehicles are lug centric. The '55 has a machined lip on the hub that matches perfectly to ther center hole of the wheel. Its lugnuts just hold it tight to the face of the hub. (This is hubcentric, no?)

 

I'm may be the one that is confused, but I have the same wheels as pictured in your sig and the center bore of the wheel is nearly a bump fit to the hub/rotor. If it were lug-centric, why is there no play in the wheel bore? There are many aftermarket wheels that for the sake of universal fit, have very large bores and are in fact centered on the bolt circle. These are wheels that by design, should be balanced with jigs that fit the lugs and center the wheel within the bolt circle just as it is when it supports the vehicle after installation. If the center bore is eccentric to the bolt circle, a cone-centered balance will be inaccurate when mounted on the vehicle. A good example of this is the Oldsmobile Super Stock wheels of the '80s that suffered from sloppy die strike and the center bore was all over the place.

 

The reason IMO, that the lugs are tapered is to allow the same lugs to be used with either thin steel wheels like the spare and thicker cast alloys. A shank-style lugnut would not tighten up on a steel wheel.

asilverblazer Senior Enthusiast

asilverblazer

Posted
Posted

We are both calling a hubcentric system the same thing, I really think the truck is designed as a lug centric. It fits tight to the hub center bore, but not as tight and cleanly as a hub centric should. The reason why the lugs are taperd is to center each lug nut hole on the stud, 5 points to center the wheel rather than 1. I think that is the benefit to lug centric.

Information on stud vs. lug piloting

hubbycap Senior Enthusiast

hubbycap

Posted
Posted
We are both calling a hubcentric system the same thing, I really think the truck is designed as a lug centric. It fits tight to the hub center bore, but not as tight and cleanly as a hub centric should. The reason why the lugs are taperd is to center each lug nut hole on the stud, 5 points to center the wheel rather than 1. I think that is the benefit to lug centric.

Information on stud vs. lug piloting

 

Tapering keeps the wheel stud from rubbing against the side of a lug hole in the wheel. The use of a taper seat and hub piloting is not mutually exclusive. The use of thrust washer type lugs without hub centering is not safely achievable and are not found together.

 

Most all current Ford F series wheels use thrust washers and hubcentric wheels. GM wheel bores are also VERY snug and weight bearing. The secondary purpose of the lugs on GMTs is weight bearing.

 

Edit: error corrected

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