I have a 2004 3500diesel Quad cab 4x4 Dually- Have gone through the stock tires @ 40K miles. Definitely want a larger, more agressive appearing on/off road tires. I do a moderate amount of heavy hauling- horses, fifth wheel, dirt, gravel, lumber so they will have to handle the loads. Any suggestions would be appreciated.

 

I would suggest Toyo Open Country AT's. Not a really agressive tread but fits the bill for most applications. The only thing to be aware of is that these tires come in both "D" and "E" load ratings. The "D" rated Toyo's are comparable to many "E" ratings of other tires but if you are hauling heavy with the dually I don't think you could go wrong with these tires with the "E" rating.