Got up early, went to tyre fitting place.
Got tyres taken off steelies, balanced and fitted front and rear £40!!
Great!
Drove away, rears swimming all over everywhere. Turns out there are two small bolts in t=he rear wheel hubs that stop it from sitting flush

Got to get the mangels drilled to accommodate said nuts. Bless them, the garage took the tyres off the manges, refitted to steelies, balanced and replaced for nowt.
Anyways, I would like to know what these two bolts do....and why aren't alloys affected??
oh well...they look good on the front!!!!
Emma