Help with tires...(kinda off topic i.e off road camper..)

I have a 07 Nismo 4x4 and a lifted fleetwood cobalt camper. I am trying to match the tires on my camper to the tires on my Nismo for both looks, offroad and interchangibility of spare.

The camper only weighs 2000 lbs so the trailer tire sidewall issue is null and void.

My questions...

-current hub on trailer is 5x 4 1/2.
- how can I make this happen without major mods to the camper axle?

Thanks!