GU.. What size of tyres please?

[maasa2002]

Hi There and Good day everyone

Last week I bought a used, 4door, M/T, handle control side windows, TB45E petrol engine, 9passenger, S (standard), wagon 2005 Nissan Patrol.

I liked it for its size and look.

I have a question about tyres, specially when the tyres that are on it, are TOO OLD.

But I faced a problem with the factory size, which is 235/80R16
As the plate inside the door shows...


This particular size is not available everywhere here. I had some troubles finding it. The high price is another problem.

My questions are
What options do I have?
Is there any other sizes that don't affect badly on the car?

I have a picture of the wheel itself. I think it is a little bit THIN.


I need HELP
Thanks in advnace

Update>>>
By the way I found more information on the iron rim ...

Excuse my English, not a native.