I put a set of Yokohamma Geolanders on my 150, load rated E, and run them at about 70psi rear and 65 front. When they were new, they were pretty squirmy because of the deep all terrain tread ("hair brushing" is the technical jargon). They settled in after a 1000 miles or so and have been a great all around tire ever since. Coming up on 59,000 miles and they should get me to 60,000 + before winter when I plan on buying another set. The more wear they get, the harsher the ride unloaded. Stands to reason though, since the tread gets thinner and the compound gets harder. I've been very pleased with their performance overall. I tow at about 8000 lbs, 1100 lbs tongue, and 15,300 combined, so maxed out on numbers.
