are the traction tires shown on the Bachmann parts suitable for the N-Scale 4-8-4 Series J steam locos? :)
I think If you e-mail Bachmann parts youll get a direct answer to this. They might need a little more exacting detail from you, like the part number on tires in question, and year of loco. But e-mail often gets very quick response. Calling is another option but I think e-mail is much easier for THEM to keep track of you and a good answer.