Hi John

You are confusing wheel/rolling diameter and rim diameter.

Bigger rim with lower profile tyre might give you the same axle height as long as you keep to the same tread width. Less
sidewall height will improve swaying, and stability at the expense of transmitting more vibration, and being less
suitable to rough roads. If you do decide to change, I suggest you talk to a specialist - There are an amazing number of
permutations possible.

Bruce

jcarlyle wrote:
Paul, that's a good suggestion, but I can't easily do it. If I get
bigger wheels the rear of the trailer will be too far in the air for
the tail gate to "lock" onto the ground when I remove the glider. I'm
also pretty sure that bigger wheels would interfere with the inside of
the fenders. Yeah, I could re-do the hitch and replace the fenders,
but since I can make the 13" wheels work without too much trouble, why
not?. Thanks anyway!

-John

On Jul 22, 11:00 am, sisu1a wrote:
If your getting new rims too, ditch the finicky European 13" setup
that you can't find the correct size of and UPGRADE to a 14" or 15"
that has PLENTY of tire selection and is more robust. If you don't
live near a big city etc, order new rims online if you need to, but
you should be able to find good 14"-15" trailer tires (stiffer
sidewalls than car tires, but 6-ply truck tires are good too) locally.

-Paul