I went to the 16 inch wheel on my 62 and I'm glad I did. My truck rides a lot better, but I think the real difference is in the tires.
What was really interesting was how little the major tire stores know about Landcruisers. Don't assume they know what they are talking about. And they are really stupid. I went to two different shops, one was a local tire/wheel dealer who has been here for years, and the other was Discount Tire. Discount Tire said they could order a wheel that fit. Very few choices. So I told them to order it. Came in the next day. They got my truck in the shop and the mgr didn't tell the kid in the shop anything and he promptly unmounted all the old tires. The new tires were in a trailer behind the Cruiser. So when I walked back out to the shop there were all the old rims and tires all separated. I finally caught the manager who was busy with other customers. I asked him about breaking down the old tires. He shrugged. So I go back out there in the shop where the kid had finally discovered that the old rims didn't go with the new tires I had. Won't fit, he tells me. So I decided to let them figure it out. I went back in the waiting room. So eventually the kid comes in and gets the manager. They have another discussion. The manager shows him a stack of new rims that had just come in. So they figured out that the new rims went with the new tires I had in the trailer. So wanting to be efficient, the kid mounts up all the tires and rims, then balances them all. I'm watching through the window. He rolls the first tire and wheel over to the front passenger side. He pushed it on there, takes it off. Puts it back on again. Pushes harder this time. Gets another guy over and they look everything over really good. They finally come get the manager again. Another discussion. He gets on the phone. A heated discussion now with somebody and then he goes out into the shop and looks at the wheel. Finally, he comes back in and tells me the wheels they ordered will fit, but I have to take them to a machine shop or something and have a little metal ridge machined off inside the center bore. I said, "Not bloodly likely." So then I tell him, just put the old tires back on. He tells me the kid has already unmounted all of them. I said, That's what I was trying to tell you while ago. So then he realizes that he doesn't have a rim that will fit and my truck doesn't leave the shop until he re-mounts all the old tires and rims. He wants me to pay for having them put back on. I told him, if you had took one tire off, and took one of the new rims out of the box and checked to see if it was going to work before you unmounted all of them, we wouldn't be having this discussion. So he wasn't very happy and finally after about two and a half hours I left just the way I'd come in. New tires still in the trailer. Finally got the rims I'm running now from TireMax. And even they had trouble finding one that would work. Most of the time the center bore is going to be the problem. You have to have 106.25 on the centerbore.
So the wheel I selected was HELO 842 16x8 with ZERO offset which is 4 inches of backspacing and a 106.25 center bore. I really needed 3.75 backspacing on an 8 inch rim, so it was still tight. They had to put a 1/4 spacer on the front and they still rubbed a tiny bit. But I like the rims a lot.