bob213 wrote:

If you have the clearance and don't mind buying new rims, yes you can. Remember, you want at least 1 inch "between" the tires. If you are going to purchase new 15" rims, I would suggest getting some that will hold at least 65# PSI so you can go to a load range "D" or "E" if you want. Shadow Trailers has some white modular rims rated to 2600# and will hold the PSI. If you have a Discount Tire or America's Tire in your area they will order the Maxxis tires for you. Otherwise you should be able to get them from DiscountTireDirect or Tire Rack online. Make sure you get the correct width rim for the tire you plan on purchasing.

Rims

johnrbd wrote:

Don't forget to have stainless steel valve stems installed. Rubber ones tend to deteriorate after time and the constant bending from checking psi.

cathcartww wrote:

The "D" in ST205/75D14 is not the load rating - it designates a bias ply tire. They are usually only load range C (50psi). I would go to radial tire ST205/75R14 (here the "R" designates radial). If you have room, you can go a little wider (215 or 225 as Batman said) but you will have trouble finding anything heavier than load range C in the 14" size. The only two Load range D (65 psi) tires I know of are the Kumho (sold by Tire Rack) which comes highly recommended by the single axle guys that need the capacity, and the Chinese Kendra Karrier (distributed by Martin Wheel and sold by Northern Tool). On our previous trailer, we had 14" wheels, and the Kumhos were out of stock so we went with the Kendras. They seemed like a good heavy tire, and we ran them close to 15,000 miles without any problems.

As Bob said above, if you go to 65 psi tires, you need to check to make sure your existing wheels are rated high for the higher pressure.

and X2 on the metal valve stems, and spin balance too.