Part worn tyres,would you use them??

[chunk166]

Hi guys 'n' girls, as the title says! " would you use part worn tyres?" i'm gonna be needing a new rear tyre soon but funds are getting tight! i don't think i would use a part worn front but deffo on the rear. But I was wondering  :rolleyes  if its ok to mix 'n' match them? I know radial with radial & cross-ply with  cross-ply,but different manufacturers would be ok,wont they?? :evil .


Cheers Ray