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Q: Hi just curious why most people are complaining his tire goes flat on 200 pounds if it’s solid rubber how does a solid rubber tires go flat?

Great timing for this question. I have been moving rocks lately in my wagon, got tired and left them for a few days. I just put the new tires on and now they were flat. Not flat from losing air, literally flat on the bottom from the weight. I unloaded the wagon sure I would need to replace them again with a lesson learned. Do not leave heavy amounts of weight in the wagon for 5 days but two days later, weightless, the tires are round again and I’m good to go. I do live in a rather warm climate so maybe the heat helped them to reshape. I am happy with the purchase.

Q: Are they super-hard like some flat free tires, or do they have some give like a pneumatic tire?

They are fairly hard/dense. Probably equivalent to about 40 PSI in a pneumatic tire of the same size, which would result in a 30%-35% over-inflation.

Q: Will these wheels replace Wheel No. 3339 on Milwaukee hand truck model no. 30080 without any major hassle or modification of bearings, etc.?

Let me say first I know nothing about model number of any product. I bought the wheel based on size of the wheel on my hand truck dolly’s. When I installed them my old wheels were tube type and I had a washer on both sides of the rim. On these I had to remove one of the washers so it would fit. Now with all that said, I really like them. I guess if they don’t fit you could send them back for a refund. I know I haven’t given you a lot of information but I hope you can use some of it.

Q: What is the height from the ground to the center of the hub?

Using the sellers supplied drawings, it shows that the overall height of a tire is 10 inches, therefore the center of the hub (i.e. axles) to the ground would be 5 inches.