vw wheel bolt size

[dylan8]

hi all,
i know the mk4s have 14mm wheel bolts. But what do the others have??
Reason im asking is i have some new wheels with a 12mm bolt holes, this is no problem currently as ill be running custom made adapters to 114.3, but later on if i move on to a mk5, mk6, passat etc id like to reuse the above wheels with wobble bolts.

Cheers, dylan

[rayray086]

M12x1.5 is used by models Mk3 non-VR6 and earlier. M14x1.5 is used for Mk4 and later + Mk3 VR6.

What you can do is widen those bolt holes to accept 14mm. Should be easily done by a machinist.

[dylan8]

cheers ray.
While on bolts... Will wobble bolts work through a 14mm hole in the wheel to a 14mm hole in the hub? Or should i get the wheels opened up to 15mm or so? Seems to be ok from my research onthe net. Just wanted to double check, stud pattern is 5x114.3 wheel to 5x112

[rayray086]

To me, it doesn't sound like it'll work as a PCD of 114.3 and bolt hole diameter of 14mm means there won't be any "play" for the wobble bolt to locate on a PCD of 5x112... but best to be able to try and fit it for real to know for sure.

[dylan8]

hmmm me neither! but everyone else on wheel forums seem to be doing it. wheels must have slightly bigger holes in them?

[dylan8]

I dont really have a chance to try them as the wheels are down in melbourne ready for work, only thought of this the other day.
so really for a 112 to 114.3 im only needing to gain 1.15mm each side, so if i increased the openings in the wheels to 15.2-15.5 from 14mm i should be right yeah? but still enough meat to hold them on with bolts for the correct pcd...?

[rayray086]

Sounds right to me. Make sure there's still a taper for the bolt head to seat on to.

[dylan8]

actually the holes need to be 16.3mm dia (did a quick cad drawing)
I cant see anything about people needing larger holes though