Can't help you with that oddball size, but I've had Kumho AT51s in 275/70-17 for about 26K miles. Like most tires, they started out very quiet but got a little noisier with age. Not really bad, and noticeable only on certain surfaces. I like their performance both on road and off. They balanced well -- never had a steering wheel shimmy -- and their relatively light weight means less of a drag on MPG and handling. I'd probably get them again for the balance between toughness (C load-rated) and light weight.