These are 17" AMG rims from a 2005 CLK500. I'm pretty sure they'll fit on an SLK too as the part numbers are for 171. Quite likely they'll also fit on C203 or E210/E211 cars but you n need to do the research on that. Front are A171 401 1402 and marked size 7 1/2J x 17 ET 37. (i.e., 7.5" wide and 17" tall)
The rears are part number A171 401 1502 in size 8 1/2J x 17 ET30. (8.5" wide and 18" tall) The tires on them are not good for long term, but could be driven 5,000 miles or maybe a bit more. Front are 225/45ZR17 Michelin Pilot Sports (might be original tires from 2005). On the rear are Continental 245/40ZR17 that were just balanced and are much newer than the fronts.

But you would be buying the rims, the tires aren't anything special. The wheels themselves have only got 27K miles and were refinished at some point before 2012. They have some scuffing as they were used in Los Angeles where street parking is a daily trial. Have a look at the pictures, happy to do closeups as well by request. Would much rather do a local pickup here in Hollywood, CA so you can check them out in person. Will consider shipping if nobody jumps up in the next week or two. Car was driving smooth and steady, I believe they are all straight and true and balanced.

I also have a set of original early style taillights I would LOVE to package together. I found the same rims for $600/set at SoCal wheels. I'll happily beat that. $550 for wheels with these tires. I'll toss the taillights in for another $100 if picked up together. Otherwise the taillights are $75/each plus shipping. The taillights will include some side marker lights if I find them.

If someone jumps quickly, I'll do a special deal if picked up by Tuesday (1/17/17) afternoon as I am going on a trip and would love to have them gone.