I have used screw in studs in the past. They will cost around $35.00 for a set that will do 2 tires, and you may have a few extra. The only draw back is they are permanent to the tire Jc Witney carries them for auto tires
Now we are on to something! So, once you screw them in, no removal is possible?
I think JC Witney might be few thousand kms too far for me, but I might check some Scandinavian online shops...
It would be handy if I could remove them when not needed though...
Now, this is a good idea, if somebody carries winter gear for bikes/scoots, it must be Scandinavian people... will look into that...