On Tue, Feb 24, 2009 at 1:00 AM, Andrew Grebneff <goose1047@gmail.com>wrote:

>
> The BenT One told me that wheels drilled for 14mm studs will work on
> cars with 12mm stude; the nuts will have slightly less contact-area,
> but will be OK. This is for wheels which have concave seats, not flat
> seats!

Andrew,

If the lughole seats are a 60� conical seat, either 14mm or 12mm lugnuts or
lugbolts will center the wheel correctly.
Ballseat lugholes will be a different story as typical radius for the 12mm
lugnuts & bolts will be smaller than the 14mm
version. That is when you will contact area issues.

Cheers,

BenT