I installed RaceDeck tiles in my two car garage in November 2002. I initially wanted to epoxy the floor, so I contacted a commercial installer (does floors for dealerships, truck repair garages, etc.). Although my floor was in great shape (no cracks, flaking, etc.), they installers recommended that I not install an epoxy system as I have too much moisture transfer through the slab. They would still install it, but would only warrant for 1 year instead of 5. Here's been my experience with the RaceDeck system.
Pro's:
1) Very simple to install. I used a table saw with a carbide blade and a hack saw. That's it.
2) Floor is warmer than concrete as each tile has a grid pattern on its underside that keeps the tile surface elevated appox. 1/2".
3) Looks very good. I installed a custom pattern using gray, black and white tiles, but you can do all sorts of patterns. Customize to whatever you like.
4) Wash my cars on it. The diamond plate to the surface keeps me from slipping.
5) As someone mentioned above, if I move I take it with me.
6) Did I mention I like the looks.
7) Can easily replace damaged tiles individually. However, the color goes all the way through the product, so nicks or scratches don't show.
8) Haven't found anything that leaves stains on it (oil, gas, etc.).
Con's
1) Pricey - although not much more than having a professional etch the concrete and install a commercial grade epoxy system.
2) If your concrete floor isn't perfectly flat (and mine isn't), the tile "click" when you walk on it and it makes contact with the concrete underneath. Not in all places, but enough to bug me.
I have a Nissan Z that is a garage queen. It has set in the same place on the tiles for over two months without being moved. When I moved it last weekend, I checked specifically to see if it had left any indentation to the tiles (checked it with a 4' straightedge). None, Zero, Zilch. The Z isn't a light car. I had read that this deflection or sagging can be a problem with tile sytems, so I bought several extra tiles in each color, just in case I do have to replace some down the road. So far, so good.
I also read that the diamond plate to the tiles can be a problem when running creepers over the bumpy surface. Actually, I've found just the opposite. When using both my sit on and lay on creepers, I like the fact that their wheels are braced a bit by the diamond plating. I can get a little better leverage that way without the creeper rolling the other way.
I do use a 20"x25" piece of scrap 3/4" plywood when using the floor jack and some scrap 12"x12" plywood when using the jack stands.
I don't have a floor drain, but RaceDeck also makes a tile in a mesh pattern that it would seem to me could be placed directly over a floor drain so you wouldn't end up with a missing tile in the center of your floor. The mesh tiles match the solid tile colors.
So that's been my short experience to date. Once I parted with the money, I have had no regrets. Talk to me again in six months.
Bill