Zahanma is correct. Those sizes are what the manufacturer put on the car originally. You'll be happy with that size and you're guaranteed not to have any issues.

However...
I would recommend NOT buying them from Tire Rack. I know the prices are good on Tire Rack. I know the selection is good on Tire Rack. But: every time I buy tires from them, at LEAST one of them is messed up.

For example: I bought four tires for my daily driver. They were nothing special, just Continental Extreme Contacts (Z Rated all season tires). One tire was so heavily out of balance, the tire shop couldn't balance it. When it was mounted on the rim without weights, it would roll by itself and always stop at the same spot - like it had a lead weight glued to it.

I thought the tire shop I went to was just giving me crap because I didn't buy the tires there, so I took them to a trusted friend who owns a shop about an hour away. He had trouble too. I ended up returning the tire to Tire Rack. He said he sees this all the time: out of four new tires usually 1 is bad, frequently 2 are bad!!

Go to someone you trust and have them order the tires you want. You might pay a couple bucks more, but you'll get quality tires - or the shop will return them before they ever mount them.