I have seen "Yes" and "No" responses ...what is the truth? Some say they are not because the lug holes are tapered and on hub-centric wheels the lugs are not tapered. I was under the impression most all OEM wheels these days were hub-centric and hub-centric wheels are the best for getting the best balance. So, are the OEM PYO forged (Alcoa) wheels hub centric or not?

I don't believe so..

My reasoning is that these wheels will fit current Modelyear to as far back as '73, quite possibly earlier.. We know the older trucks were not hub centric.

The '97-up Fords are hubcentric and will not fit the old 8x6.5 pattern.

JMO,
John

They are in fact HUB centric.........


If you notice they just fit over the front hubs........


Thttp://www.dieselplace.com/forum/smileys/Big Smile.gifNY

They are in fact HUB centric.........


If you notice they just fit over the front hubs........


Thttp://www.dieselplace.com/forum/smileys/Big Smile.gifNY





That's what I thought too but have others tell me "NO" that with hub centric wheels the lug nut holes are never beveled. I asked Alcoa this morning via email but haven't heard anything.

They are not backward compatable.


My 93 rims fit my 04 but the center hole is larger by 3/16 or so.


Dodge still uses the bigger diameter hubs like the older GM.

They are not backward compatable.


My 93 rims fit my 04 but the center hole is larger by 3/16 or so.


Dodge still uses the bigger diameter hubs like the older GM.

If I misunderstood your comments please disregard.http://www.dieselplace.com/forum/smileys/Embarrased.gif

I believe they are backward compatible. I had a set of PYO's on my 93 K2500 with the 454. Several guys at Colorado K5.com use these too. I also spotted a set of stock 88-98 steelies on a new HD as well...

The aftermarket wheels I am now using came off a 1986 K20 and fit my HD fine.

Here's the PYO's on an 67-72 burban.
http://www.dieselplace.com/forum/uploads/71A_p151150_image_large.jpg

I have seen "Yes" and "No" responses ...what is the truth? Some say they are not because the lug holes are tapered and on hub-centric wheels the lugs are not tapered. I was under the impression most all OEM wheels these days were hub-centric and hub-centric wheels are the best for getting the best balance. So, are the OEM PYO forged (Alcoa) wheels hub centric or not?


The PYO's on my truck are stamped 'Superior.' ALso stamped is 'Hungary,' leading me to believe they aren't even fabricated in the USA http://www.dieselplace.com/forum/smileys/Angry.gif. Does anyone have PYO's that say Alcoa? Just wondering, as I never found any info on SUPERIOR wheels.


It's a possibility GM has several manufacturers making them.


On a side note, I, too, was under the impression they were hub centric, but I also thought hub centrics used two piece lug nuts - (attached washer). My two pennies...

Yes, the set that I have is stamped Alcoa, and they are made in the USA. Later versions were made in Hungary by Superior. They are hub-centric in that they do fit tightly over the hubs. The center holes are the same size as they have been on all GM 8 lug wheels (except dually wheels, which are truly hub-centric - for a reason) at least since the early sixties, probably earlier. The tight fit over the hubs on SRW wheels (which use tapered lug nuts) are just to make it easier to be sure that they are centered when the lugs are tightened. You can use Dodge, Ford, or aftermarket wheels (which all have bigger center holes) on these trucks with no problems. This is NOT TRUE for dually wheels, as they have to center on the hubs since there is no other way to ensure that the inside rear wheel is concentric with the hub.