Re: 20 " rims on my trailer.
Sounds like a cool thing to do for some flash but not a good idea due to all the input above. Sidewall flex, suspension, did anyone mention the higher probability of a snakebite due to crimped bead ? curb rash, ya ya ya
Overall diameter may not change as it is the WHEEL diameter we are talking about changing (thus far), not the tire diameter which would be the mitigating factor about a change in height.
Easy enough to compare at
www.tirerack.com. Maybe find some cool wheels or dress up the the exg. ones with some chrome or powder coat to match something on the package.