Thanks a lot for the link! Great source, also for tubes- I have been looking for a source for slim tubes for some time. At present I have no spare for my sons 20" kojacks. Have ordered from several sources but what I recive is only good for BA`s and BMX. Lets hope they ship abroad.

Yes, I agree on the folding spare tyre. When traveling with the B`s we are three persons and around here a 451 tyre is as rare as hens teeth.Same with quality 20" tyres. Tryed buying last summer when on holyday in Copenhagen. Found it impossible. I am sure the locals that know where to ask can find them but not me. Only childrens max 30psi.