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Does anyone have experience with this type of a dolly – Harbor Freight
frequently has these on sale for about $40. Will this dolly with the
larger dia wheels go up steps easier. I would still end up splitting
and widening the bigfoot dolly since it also is only 22 inches wide.

We have four of these. My biggest issue is the tires go flat often. Second
issue is they get lost constantly. We need four just to keep one put away.
otherwise they are great for moving stuff.

To go up stairs, you need two operators. The bottom guy is the strong one,
he lifts. The top guy pulls back balances and holds the gain. Then repeat.
Don't get your tire so big that it won't just sit on a step.

Karl