Hi,
https://www.millertire.com/products/...b-3-4-bearing/
My tire size matches that listed in the link - 16x6-50-8. The exact measurement of the inside (hole) diameter of my bearings is 25/32, so since 3/4 seems to be fairly standard, I assume this wheel comes with the right size. I really need at least one new wheel, being that over the past several years it's to the point where a new bearing simply fits inside my wheel with lots of play - probably turns constantly with the wheel. Consequently, I've gone through loads of bearings over the years. From hammering out the remainder of al the worn-out bearings, I'm sure the ends of the wheel are expanded and thus pretty well shot. Tired of eating through bearings.
Miller was suggested to me as a good place to get wheels, so just have to make sure of the size. I've been in contact with them and they have given me bearing measurements that don't quite match mine - they indicate a measurement of 1 3/8, whereas I get 1 10/32 for the shorter (inside the wheel) measurement and 1 14/32 for the larger outside diameter. Their wheel comes with the bearing, so probably no need to even worry about any of this - just interesting that my replacement bearings don't seem to exactly match their measurements.