You are not towing a small boat. I would not go with anything less than an E-rated tire; as tires are definitely not a place to skimp on a towing setup.

Check out Cooper tires. I am a huge fan and have always had great luck with their products. I had them on all three of my trucks; (sold one of them a few weeks ago and this is first set of Coopers for new owner and he loves them as well).
http://us.coopertire.com/Tires/Light-Truck.aspx

^^^ Rolling on Cooper (20" Zeon LTZ's) now and love them.

Thanks guys. That was the definate answer I was looking for. E it is. Just need to try and stay in budget.

unless your tring to get the off road knobby cool guy tires you find a descent agressive looking tire for under your budget for sure. Those off road jobs are noisy, kill mpg, and wear out quicker anyways.

check walmart, discount tire online

Not big knobby. Mildly agressive. reasonable on the highway but not weak and out of place on a construction site. I was trying to group the rims I like( which are economical yet good lookin, 210 apiece ish) Dick Cepek dc2, with tires for the task but that is proving to be difficult. Couple that with , where to have them sent. Home, Maryland where the truck is or Fla where the truck is going to pick up the boat. There are worse problems to have I guess.

good luck. My last diesel had 18in lariat rims and I thought those looked nice. might try an 18 inch rim with a bigger tire maybe, that might cost less than 20in rims and 20in tires.

Try Ebay. My F250 came with steel rims on an XLT, dont know why. I got brand new take off lariat rims for 400 bucks.

Bri I've used cooper discoverer stt on a cpl trucks. I like em they are cheap, ride nice & quiet & they wear good.

What color is the truck? You might can find some cheap(er) used rims and paint them. I am a fan of www.dipyourcar.com stuff and currently have the rims on my beater Dodge 2500 painted black. If I decide to go back to the polished, all it takes is a few minutes with a pressure washer. The rims on my Dually and the Tahoe that I sold are also black--on black trucks.

http://richmond.craigslist.org/pts/3676306552.html

black.

Black wheels on black trucks are where it's at right now. There is a dark green Ford with 2-tone lower panels running around my house with black wheels on it--chrome bumpers and nerf bars. It looks absolutely ridiculous. Black wheels on silver, red, white, and especially black can look great.

My Ford and former Chevy, and a nice hot rod I saw in Germany a few months back.