Hello I am wondering if anyone has a problem towing with 35 inch tires and 3:73 gears? I only tow a 26 ft travel trailer that is 4700 lbs dry and maybe 5500 loaded. My truck in sig seems to work prety hard to pull this small load. I have gone through the entire truck and can't find anything wrong with it. I know my friend had same truck as mine but a 2001 with 35 inch tires and tows a 37 ft toyhauler that is about 13000 lbs loaded. He says he can do it no problem. Just wanted some feedback from others. I see everyone on here tows much more wieght than me, how many do it with bigger tires and a lift with no problems?