The ramps have a much larger contact patch than the tires do, so I think those would be fine. Jacks and stands could be an issue, concentrating the load in a smaller footprint. Scrap plywood or sheet metal underfoot would probably be good enough to distribute the weight. See folks do that on asphalt and unpaved surfaces a lot. Don't own any welding gear or torches (yet), but I suppose you could throw a welding blanket down under whatever you were working on.
I usually take precautions for big spills, just to avoid potential headaches with cleanup. Used to use a tarp before I moved into this house, it's around here somewhere... But I've enjoyed a leftover 6" tall section of a blue rain barrel that was left behind. That bad boy catches everything!! lol So my cleanups are usually pretty small. Drips and drops here and there. But yeah, if a gallon jug of something was left open, and got kicked over, that would make for a very bad day.
Not worried about bugs. When I treat the exterior of the house, I always do the interior perimeter of the garage too. So anything that made its way under there, wouldn't be around for very long. I think I could live with anything caused by some unevenness of the garage floor. Between the laundry, AC unit, air compressor, HV fan and tools that are running at any given time that I'm in there, squeaking tiles from movement wouldn't bother me. I did see one review from someone that put these in their laundry room, and said it was noisy.
All great points though, and good things to take into consideration. Appreciate the input.
