I am not sure what a 10x7 tire is, but I bought my 205-65-10 tires on Predator wheels at a place called Golf Cart Guy. Here is the thread that helped me:
Golf Cart Tires
If you read that thread you will see that EdVinMA paid $375. When I went to the shop, to get the same tires I was told $425. I spent some time in the shop, talking about various wheels and how I heard someone paid $375 for the ones I wanted, but he never moved from $425. Finally I was about to leave and said, these look great, but I am not sure why someone else paid $375. To that he said.......... I can sell them to you for $375.
So beware of that, but I could not find a better price.