I'm not getting a mental picture of your rim configuration. It is almost certainly a conversion from steel. In 1943, a farmer would have been lucky to get a tractor of any configuration and rubber tires were out of the question. A '43 H would have probably had a steel serial number plate and steel fins in the radiator.DanR":3b3y32am said:The 43 H I have has 36" tires. The rim is one piece and has 7 single spokes and 7 doubles. Could this have been a conversion from steel tread?