I went from 13 inch to 14 inch rims when I upgraded the trailer from 2 tonne to 2.5 tonne. Picked up a set of 5 second hand alloy rims for $50 and then the cost of new tyres.

Apparently can have problems with salt getting into the beads on alloys and causing air leaks, but I've had mine on for around 9 years and no ploblems, but always give wheels, tyres & brakes an extra good flush with fresh water after dunking in the sea.

Greater selection of Light Truck tyres to choose from in 14 inch, and wheels not spinning as fast when towing due to increased outside diameter.

Just confirm that you have the room under the guards, wouldn't want to be rubbing the tyres inside the guards every time you hit a bump.

 have a look on gumtree. there is always someone selling rims and tyres on there. steel rims arent too bad but just gotta wash them more thoroughly . 14 or 15 inch are more readily available in tyres

 i am upgrading from 4 stud, 13" rims on my trailer. I just got 2 x 14" rims - 5stud, white sunraysia with new tyres for $85.00 each, including delivery, of Ebay over the weekend. I have the 13" tyres which appear to be in quite good condition. If you want to PM me your contact number, i will check the size out when i get home & you can have both tyres for a bottle of Jim Beam.

 i am upgrading from 4 stud, 13" rims on my trailer. I just got 2 x 14" rims - 5stud, white sunraysia with new tyres for $85.00 each, including delivery, of Ebay over the weekend. I have the 13" tyres which appear to be in quite good condition. If you want to PM me your contact number, i will check the size out when i get home & you can have both tyres for a bottle of Jim Beam.

 I had automotive alloys, and had constant problems with them loosening. There is naturally corrosion between the steel hubs and alloy rims when you dunk them in saltwater, corrosion and a poor mating surface, they just shuffle and loosen on long trips. I literally had to do them once between home and the Ningaloo turnoff every year, check them at Carnarvon  and there would always be loose nuts. I forgot one year, overnighted in Carnarvon, lost a rim on the Exmouth road.  15" Ford Snowflakes.

Because I had 15" rims and new LT's, I was stuck with 15's and couldn't find galvanised ones. So I just bought s/hand falcon rims from a wrecker, pressure cleaned them, painted them liberally with Lanox and left it in the sun for a few days to set. Fitted to trailer, never had another problem. When I sold the boat and trailer 3 years later, they were just at the stage where they needed another presure clean/degrease and re-treatment with Lanox, a few tiny rust spots showing.

Cheap automotive mags from a wrecker may seem like a good idea--not, IMO.

I bought my spare 14" rim from Martins Trailerparts after doing the ring around as they came up the cheapest at around $70 if I remember correctly.

 Thanks for the feedback gents.

Gonna bite the bullet and buy a new set. $75 for rims, plus $80 for tyres.

Im gonna have 4 pretty good 185R13C tyres if anyone is looking for some.....plus 1 spare rim with a shredded tyre on it.

 I have a set of 14inch rims with ford 5 stud pattern and basicly brand new tyres on them (done 2000kms) 185R14Cs. Was actually going to throw them up on gumtree but happy to sell your way for $180 if your going to bite the bullet anyways might save you some cash. That being said they arent galvinised so would require some kind of treatment as ranmar did so can drop the price if you wanted to have a look. Cost me 60 a rim and 85 a tyre and have 2, can seperate if ur only interested in the tyres.

Just be aware that if you are up near your weight limits, 13 inch rims and tyres have a higher load rating than the larger sizes.

 Hi Blari,

check out Martins Trailer Parts. They do Both Rims and Tyres for for both 13" and 14" ready to go. I am sure they are about $100 for both so wasnt worth putting new tyres on old rims. I just replaced a set and couldnt go to 14" without some serious Mods on the trailer.

I got new tyres and (galvanised) rims for $155.

Gonna buy a couple of second hand ones off gumtree to be spare, but like the idea of new rubber on thr oad when towign up North.

Changing tyres on the side of the road with crying kids in the car was about as much fun as I expected (actually probably better for me than the missus).

Will contact martins though, for both tyres and i need some new rollers.

Blair.

 Hi Blari,

Were you talking about the 4 stud 13" rims? Where did you end up getting some galvanised ones from? Chasing some myself, seems near impossible in Australia.