Surfside tire diameter question

[Karl S]

Does anyone know what the stock rim and tire size is for a
1977 Triple E Surfside TM14? It is currently fitted
with 175/80/R13 tires (23.8" Diameter), and while they are adequate
for the load I would like to raise the trailer up a little for off highway use.
What is the largest diameter tire I can put on without it rubbing? I'm fine
with changing to a larger rim as well.
TIA

[Joe MacDonald]

check inside the cupboard door and see if the stock size is listed on the inside.
I think my Trillium was A78-13