caravan tyres

currently 225/75r15
was wondering if i could use a 215/75r15 or 225/70r15
would like to drop height a couple of mil for clearance in shed
any advice appreciated

Hello Salt n pepper,

The most commonly used tyre size for caravans with 15" wheels is 235/75/15.

This is because it is a common size with many of the lighter 4wd vehicles and is therefore a size easily acquired in the bush. If you intend travelling outback on the dirt it would be unwise to go for an obscure size because if you get into trouble you will have a long wait for a replacement.
235/75/15 is available almost anywhere and ranges from the cheaper Maxxis and Saveros up to expensive Coopers etc. The fact that they are available in Light Truck specification means you can get a tyre with a stronger sidewall.
Cant help you with shed clearance!
regards
Guy

Guy,
thanks a lot I realy appreciate it, is there a particular brand and model you have had a good experience with.
my 76 series has cooper ST's, but I didn't want to spend that much if avoidable, however I do want quality and don't enjoy sitting in the dust changing wheels
thanks again Salty

You may also want to look at the tyre pressure. If travelling over rocky unsealed roads it would pay to take the pressure down to avoid splitting side walls. At the same time keep the speed relative to the road your driving.

Cheers
Joker