I think we would have to know which Sunraysia? 15 inch ? width? etc.
If you have access to the trailer just get under and put a straightedge across the inner rim and measure to the back of the mounting surface.
Then do the same with a Disco rim.
Then measure the clearance between the tyre and any object that can foul during suspension travel.
If you are using the same tyres then you should have an answer. If you are using different tyres then you have to account for the difference in width +/-.
My Campomatic came with Toyota Split rims (5.5?) and 750R16 tyres and my Range Rover mags and 205R16s fit, athough with only 10MM clearance to the inner guard.
Regards Philip A


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