hello just reading this post and i remembered that Spencer at midland performance center said he can get wheels for both the single and twin wheel transits,
i think it was something like 15" wide for the rear on a twin wheel base and 10" wide for he front,
give him a call don't hurt to ask
Midland Performance Centre Limited
Henry House, Six ways, Spring Hill Road,
Walsall, West Midlands, WS1 2LN, ENGLAND.
TEL : (+44) 01922 625903
FAX : (+44) 01922 625904
well i thought i wouldn't hurt but i just found that the are now closed apparently the went bankrupt at Christmas time,
i'm going now to hide away and keep my thoughts to myself,