Do able yes, sensible not so much. The cheaper trailers have lighter axles, springs, and spindles, bearings that are only as good as needed for the axle. A typical Jeep wheel tire combos increases the weight placed on those axle components. Then the axle lenght/frame clearance issues are also possible. Spacers may work, fenders may clear, frame may clear, frame may or may not be strong enough. Costs may increase.
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I have tried economically to do this so many times and failed ! Costs is just too high. I'm sticking with 15" trailer wheels. At least now my CTC and utility trailer have size in common. And to have that I had to remove brakes and hubs from axle. As wheels were 14" 4 bolt hole with unique pattern. I had 4 wheels, all with old bias ply tires. Buying new tires while, replacement size was available. The tires would have been a lot lower profile. So hubs off an unused axle bought for my planned Jeep trailer on 16", that never came to be. Got pulled and placed on axle, new 15" wheels &tires bought, for now both trailers "share" the spare tire. Replacement tires were needed regardless. But to do the wheels, and hubs added about 300$ unplanned to my utility trailer build. Basically because when I checked I missed, over all dimensions of the 14" replacement tires. Planned my build and installed old wheels and tires. Used it locally after welder /fab's major screw up was fixed. Very happy with it, then went to replace tires.
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! So to keep my ground clearance, tongue hight, and not to have a huge gap between tire and fenders- 15"! And still happy, just poorer.
In the pic you can see the old 14" wheel/tire. It's huge, even bigger than the 15". In the pic we are fixing spring hangers that were installed incorrectly. I guess I've never taken any pics since summer.
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