First off just in case you or someone else does not know, these are 16.5" rims. There are no variations. Finding radials for a 16.5 is getting tougher. There are tons of Bias tires out there though.
I've been running various sets of H1 wheels for about 6 yrs. I've dealt with 3 different vendors. Each set has been centers that I've welded into H1 wheels I've sourced.
Performance Cryogenics was my first set. Dean is awesome to deal with and he is %100 straight up with you. I've wheeled with Dean and dealt with him on a few projects and he is awesome to work with.
The inserts I had were 3/8" flat plate. I had to center them and set the height . Basically spend about 20-30 minutes checking measurements and then finally burning them in. Solid product. I love dealing with Dean, I just prefer stamped centers.
Stazworks was my second set. Cool looking product, many center designs to choose from but I will never purchase from them again. To say the least I was not impressed with the customer service during the whole process.
These were 5/16 stamped centers. Again like Dean's, I spent 20-30 minutes centering and measuring and then burned them in. Decent product.
My last set was
USA6x6.com :: A Concept Whose Time has Come! Specializing in 6x6 conversions, Double Beadlocks and wheels, rockwell axles, and rockwell axle products . Even after the bad reports, I figured I'd give him a shot. First thing that cought my eye was the price. I paid $40 a piece for the centers. These are 5/16" stamped centers. When I ordered them Daniel told me they were on the shelf and would ship the next day. 2 days later I got a call from Daniel appologizing. He said they were not on the shelf but they would be @ his shop in a couple of days and I would have them in a week. They were and I did. I really appreciated the effort to call and appologize for the misinformation and to hold to the newly promised time frame.
These were BY FAR the easiest centers I have installed. I dropped the center in, tapped down and welded. They have a rolled outer edge that sits on the shoulder inside a H1 rim. if you butt the center to this shoulder, it yields 3.5" of BS, perfect for me. Awesome product, great price, great communication, and EASY install. I'd definately buy centers from Daniel again.