Spigot rings for alloy wheels

[jross]

I have a set of 17" t.s.w alloys and have been told by a local shop today that these are not needed.This does not seem safe in my opinion,any input? thanks.

 

[roofless]

you will need to know the size for the wheel but the mb size is 66.6mm try here http://shop.ebay.co.uk/?_from=R40&_trksid=m38.l1312&_nkw=spigot+rings&_sacat=See-All-Categories