All sunroofs are prone to causing āleaksā. Primarily due to the drain tubes getting clogged with pollen. Just shoot some air through the tubes every year.
I have ran the Terra G3ās on my Ram 2500 and lined them a lot. Not sure how do do in snow but very good in medium OffRoad conditions. I would certainly consider them when it is time to replace the stock Territoir tires
How are you all wiring power for an onboard air compressor? Using the Aux switches/ wiring harnesses isnāt possible as they are only rated for a few amps only when for example a dual ARB pulls around 30amps.