Would it be correct to believe that what you want is actually a lafette, and not the tripod? They're two different things for the 42.
The lafette is a ground mount that can have a telescope mounted on it, it has a searching fire device and mounts the gun securely in place. The tripod is like a big telescope tripod with three skinny, extendable legs, that can hold the gun about 5 feet high, but has no scope mount on it, and the gun is hinged mounted on one axis. If you're not holding the gun, it doesn't stay level.
Can't say you want a wheel if it's a tire you're looking for
The picture at the top of this page shows 2 guys with an MG42 sitting on a lafette. There is no tripod in the picture.
Here's an MG34 on a tripod, legs extended. An MG42 tripod is the same thing, except for the head on top where the gun mounts. In this photo, the shirtless guy holding the tripod is going to get the crap burned out of him when the empty shells start ejecting onto his belly. Obviously this is a staged picture.