Re the cost of replacement wheels. Just do as I didi to get my fleet updated, every time you go to the shop get a pack or two. yes it will take a while but you do not notice the cash go quite so bad as buying them all in one lump. And would you want to do them all in one go. Boring.
Re the small wheels, the 4 wheel dump trucks that I think they also go in are the Cat No 92504.
http://cgi.ebay.co.uk/BACHMANN-NEW-...=UK_Trains_Railway_Models&hash=item3f011349e8 < Link To http://cgi.ebay.co.uk/BAC...mp;hash=item3f011349e8
Though judging by this picture on the Evil Bay, these wagons may come with metal wheels.
JonD
Re the small wheels, the 4 wheel dump trucks that I think they also go in are the Cat No 92504.
http://cgi.ebay.co.uk/BACHMANN-NEW-...=UK_Trains_Railway_Models&hash=item3f011349e8 < Link To http://cgi.ebay.co.uk/BAC...mp;hash=item3f011349e8
Though judging by this picture on the Evil Bay, these wagons may come with metal wheels.
JonD