Buckeye:
I have been running Swampper SSR's on my truck for two plus years. The only thing that I have noticed is they do get chewed up when you do rock crawling. I drove out to Colorado and Utah on them. After I came back they were pretty chewed up from the rocks.
You need to make sure you get the 10 Ply tires. there are many storys of guys having blow outs with the 6 Ply. I love the way they ride and sound. They work great off road.
I had them on 2 piece steel wheels and they were tuff to balance, so I switched to 1 piece aluminum and am very happy.
At a price of around 240 a tire they are very reasonable.
I have run the MTR's on my truck but chose to get rid of them because the ride was very hard. The swampper is a softer tire. I went with the stock size just to make sure the wheel stayed inside the wheel well and to keep the spedo the same.
Mark Weber
Webman
www.wisconsinhummerowners.com