I am considering changing the tyres of my caravan to stronger ones.
The caravan came with 165R13 86 R (reinforced) tyres.
I found a lot of tyres with same size and 8 PR, i.e. 165R13 94.
I believe the original rims are 5.00B and, often, I see in the tables that these 8 PR tyres need a 5J rim...