Welcome to HBT! Love the garage and the car, I think I first saw it on Jalopnik several years ago.I don't know a thing about making beer. But I can maybe add to this conversation a little. I put the tile in my garage. That was me hitting it with the 4-lb sledge hammer.
My long-term plan is outdoor-grade porcelain tile. If you DIY, it can run $2.50 sq ft or less. Properly installed it is the toughest flooring, shrugs off oil, water, tools dropping, jack stands, freeze/thaw cycles . . .you name it.
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Tools dropping, no.
It will chip.
Jack stands, I wouldn't chance it straight on the tile.
Edit: I'm talking ceramic tiles, which I have in my brew area.
I would go with this http://www.homedepot.com/p/Rust-Ole...ine-2-5-Car-Garage-Floor-Kit-286879/205697937 if you are concerned about concrete stains.
Personally... it is a garage floor, I have spilled wort several times, spilled spent grain.. I hit it with the garden hose and sweep the mess out the door and if it stains a little no big deal. It will eventualy collect oil under the truck.