[markwilliamson2001]

In answer to your question, yes the rear wheels for both the B44/B44.1, and B4/B4.1 are the same.

You cannot get any schumacher yellow minipins premounted on B4 wheels though I am afraid...

You will need some inner foams to go with the Schumacher Minipins. Schumacher Green or Blue inner foams seem popular, as do the Answer foam inserts (I prefer the Asnwer ones from MK Racing, as the foam seems better quality and doesn't disintegrate over time)

You will need to glue the tyres to the wheels using tyre/super glue. Best to clean the tyre first to remove any release agent (I use Muc Off Brake Cleaner, on some kitchen roll).

To remove the tyre once worn, you can either boil them off in an old saucepan (remember the tyre glue is cyano (POISONOUS!))

Or buy some acetone (nuclear rc do it)

Hope this helps some.