There is a minimum size for the narrow end of the tread, it can't run to a point. It used to be 50mm, then went to 70mm but I'm sure it's back at 50mm minimum.
If you're not worried about regs or it's different in Ireland than please ignore my post.
JF
p.s. measure twice cut once
If you're not worried about regs or it's different in Ireland than please ignore my post.
JF
p.s. measure twice cut once