mondo

quick question, has anyone here run wheels with a PCD of 114.3 using variable PCD bolts? (more commonly known as Wobble Bolts) just wondering what people's real world pros and cons have been?

did find this thread in a search, but not really much useful info there. thought maybe in the last decade there might have been people use these?

https://mbworld.org/forums/w211-amg/...r-e55-amg.html


thanks in advance.

hachiroku

i've researched before...i believe the VW community has positive reviews the last time i searched.

SICAMG

If you do it I would have them Cryogenic treated to make them as strong as possible. Piece of mind.

tlambert

Cryogenic??

Isn’t that what turned Dr. Bruce Banner into the hulk? Lol.

hachiroku

one thing i'll mention is that using 14mm to 12mm stud conversions eventually over the span of 3 years caused the threads of the 12mm side to stretch due to the weight of the car over time on my personal car. i had done this so i wouldn't have to buy 14mm lug nuts as i already had 12mm lug nuts.

if your wobble bolt shank is thicker than that of a 12mm bolt i'd say you would be ok, but just keep an eye on them as far as bolt stretch over time.

mondo

i did take a look on some VW forums and there seemed to be a lot of opinions offered by people who obviously did not know how the bolts work.

the 14mm bolt is an issue that may rule out quite a few sets of wheels anyway as from what i have seen, 12mm is far more common.

good to hear from someone who has done it. thanks for the response.

as for Cryogenic treatment, i've not heard of that before?

G_Money

Just get properly sized bolts from Otis Inc.

AMGPilot

You're going to trust "Wobble bolts" on a 4500lbs 500+HP 500+lb/ft torque car?

I can't really think of much dumber ideas....

SICAMG

Cryo treatment is deep freezing, like 300* bellow zero and than a slow warm up. Changes the molecular structure of metal.
You can do anything, Connecting rods,ring and pinions, cranks,valves etc,etc. Any metal that needs to be stronger.
Nascar is big on this and I have used them as well.

Also "Wobble" is a little miss leading. All the bolt is doing is "off centering " it self. The wheel hub will keep the wheel centered... as does every wheel.
Although it is not the " correct " way to do things, it will work. Again I would treat the bolts just for a little extra and there should be no issue nor having to worry about bolt stretch.

hachiroku

its off centering because the shank of the bolt is undersized allowing the seat to shift 1.5mm (generally) in either direction.

mondo

i'm not sure that's how i understand it to be. the bolt shank remains the same size and the adjustment to allow it to be off centre is done with the "floating" tapered washer. the top of the washer and the bottom of the bolt head are flat, so clamp together regardless of where the shank is in relation to the washer.






as for trusting wobble bolts being a dumb idea, they fit the wheel to your car in exactly the same way your standard lug bolts do. there's no difference in how they apply clamping force the wheel. the positioning of the wheel on the hub is a combination of the hub centric hole in the wheel centre plus the tapered holes for the lug bolts. the floating washer adjusts to fit the taper in the wheel. what they do allow is for the bolt to be off centre in the holes.

as for the comment about properly sized bolts, i don't think you understand what they are? they are properly sized. they just allow for fitment of a wheel with non-standard PCD.