Take them to a tire dealer for studding.  They will, no doubt, redrill
the holes for studs because of the crud build up from use ... that is
unless you meticulously clean out each and every hole (making yourself
cranky and blind in the process).

Mike

Wesley Pegden wrote:
> I'm wondering...
> my Hakkapeliitas have holes for studs.  How do I stud these tires?
> (Does it matter that I used them last season without studs?)  And will
> the tires wear less quickly with studs?
> Thanks,
> Wes
> '84 1.9l
>