[golf cart man]

is your cart going to be sitting for extended periods of time? They do sell these things that you drive onto that keep tires round but if the cart won't be sitting for long periods of time I don't see flat spots being an issue for you in the future. Two of the carts I have are custom fiberglass bodied carts. They are much heavier than a normal cart because of the body. Even sitting for a week or two while I'm away I don't have flat spot issues. The tires I have are the standard low profile tires from china that come on all the wheel and tire combos from the major retailers these days. I do own two classic cars and if they sit for extended periods I overinflated the tires and never had flat spot issues and they are very heavy cars.