tyres for caravans

What do the tyre people say They would be the best to advise.
Maybe a 245 width would give a better selection
What is the weight of the van loaded and what are you towing it with.
What is the make and load ratiing of the ones you have.
The makers would state a suitably rated tyre as well so what do they say

Is it a 20' van that weighs 2000kg or a 20" offroad that weighs 3000kg
Makes a big difference to what you will need
More info = better answers

What does the tyre placard say? It should give a tyre load rating - should be about 120 or so.

If it helps, and if you are starting to find 15" tyres hard to find, you can go a bigger rim and a slightly smaller tyre to keep the rolling diameter the same.

But if you stay 15" I would be going for a size about what you have and AT LT rating above 108 (about 1000kg) load rating - will give you a bit of leeway - LTs around your size seem to be about 120 which gives a bit more leeway.

Garry

you should have no problem finding a 235/75R15 in a light truck all terain with a load rating of 108-109-110 in a range of brands
.
108 load rating is 1 tonne per tyre
109 load rating is1030kg per tyre
110 load rating is 1060kg per tyre
.
The current Perelli Scorpions I am running on my 4wd are 110 load rated
The Bridgestone Deulers that came of it where 109 rated
There is a whole range of typical 1 tonne tyres in that size
.
The standard requires a derating of at least 10% ... so if running 108 load rated tyres you should be good for 3.6 tonnes if you have a load sharing suspension.
.
If you look around you will find higher rated tyres
.
The tyre plackard on all pre 05 SR hiluxes required 112 load rated tyres which is 1120Kg per tyre
The factory tyre on those SR Hiluxes is a 255/70R15 ....... its a limited range of brands that make it in 112 ..... but certainly Bridgstone do, as that was the factory tyre.
the 255/70R15 is 20mm wider and about 6mm less in diameter than your 235s
.
If you want to change rim size you can manipulate width and profile to achieve the diameter required
.
For example the factory fitted tyre for standard preo5 hiluxes was a 205R16 (85 profile)..... it is a couple of mm taller than the 235/70R15
.
if you want to get the 1 tonne load rating out of any 235/75R15 ..... you will have to run it at 60psi according to the manual.

There may be a limited range of brands that do a 235 or a 245 in a higher load rating ..... to achieve that higher rating you will need to run higher pressures ... probably 65-70psi.
.
.all the necessary information is the the tyre standards manual ... every tyre shop has one.

cheers

I'd recommend the Dunlop Grandtrek AT22, that size came std on my PK Ranger.
Very firm sidewalls so you can drop a few psi if you ever need to on certain road conds (sharp stone dirt, corros, etc).
They really elongate lengthways well with very little side wall bag, unlike my new Federal Couragia ATs in the same size, even though they are an LT grade tyre.

A lot can be said that going to same size / brand as your tug though, if they'll fit ok.
Any spares are usable on both vehicles which can get you out of sticky situations with a run of bad tyre luck.

I recently changed the tyres on my 18 foot van and put on Yokohama AT's
Tyre place had a 4 for 3 deal so good buy all round in my book.