BFG used to make them, goodyear may still make them, but they are not easy to find. The bfg's were relatively inexpensive ~180 each, the goodyears are about 500 each because they are an OE tire for the McLaren F1 and they are much more "square" shouldered than the bfg's. I think Toyo may make some 17's and 18's in larger aspect ratios now, but I haven't looked lately. My second choice was going to be a 275/60R17 which are pretty easy to find even though most of them end up being "sport truck" tires. My pet peeve is you can get tires as wide as you like, but unless you get into 19/20 inch diameter and up wheels, they all end up being 24 - 26 inches tall, and I don't like how the short tires look on the back of my car - just my opinion -
