how much tire and wheel do i need.

[CWCW]

Got a delima here that i need some help with. In short, my grandfather has a 15ft ski boat (50's-60's) model that has been sitting in the barn for 40 years now. Motor blew on him back in the 70's and the boat has just sat there for the raccons to tear up. Going to take the boat to the dump and im going to keep the trailer to turn into a smoker trailer.

The trailer has 12 in wheels on it and has 4.80x400x12 tires on it. I am looking at these tires to replace the ones on the trailer with.
http://www.northerntool.com/sh...30390
These tires have a 990 lb carrying capacity. Im wondering if i should go to a bigger 13inch tire and wheel or if i should just stay with the 12in tires and original wheels. Im also wondering if i go with the tires in the link, if they will be strong enough to hold the weight of the smoker on trailer. Haveing trouble guesstimating how much this thing will weigh. The smoking camber will be around 30 inches in diameter and around 4 foot long. The trailer will also hold a small tool box for supplies, a small gas grill, a propane tank holder and a metal storage box for fire wood. Should i choose bigger wheels and tires that have more weight capacity or do you think these 12 inch tires will do fine?

[rangerguy]

Get the biggest tire that will fit under the trailer, then you won't have to worry.

[CWCW]

there is another size tire that i can get for 12 inch wheels that has a 1045 lbs carrying capacity that i might go with. Im just having trouble imagining what this thing will weigh. I dont think it would come close to 2000 lbs but i didnt know for sure. I could go to a bigger wheel like a 14 in wheel but i would be having to change axles because i dont think they make wheels in a 4 lug pattern for 14 inch wheels.

[DABS]

I'm with rangerguy on this. The bigger the tire/wheel, the less rev's per mile. The less rev's per mile, the less tire wear and rev's that will heat up bearings, etc. The larger the circumfrance on the tire, the easier it will be able to handle potholes etc.