Where are you all finding these specs? I’ve searched for load ratings and weight of the wheels for Compos, TuffAnts, Evo Course, and others and have had little luck. It’s as if the manufacturers prefer uninformed consumers.
TuffAnt has all the specs on the website. Go in to the actual product and it's there . Full disclosure, I'm a co-founder of TuffAnt, so I'm pretty across this topic. We started the business as we were tired of poor rubber options on the stock 19" rims and also wanted affordable 18" rim option that did NOT require any modification or spacers (important for complying with Australian regs).
If you ever have any questions, feel free to contact me (I'm Aussie based) or Jake (TuffAnt USA). Jake is really knowledgeable of the northern American spec LRs.