Just drop it and you can get the size you really want.

If you have an I4, then you'll be limited on OEM wheels larger than 15. You can only use the 16" wheels that came on previous gen CL's. All the newer Honda/Acuras have 5 lugs, so no 17" type S wheels, TSX, etc.

I have 18, and I think they are a good balance of looks and performance.

If you aren't going to lower it, get some previous gen CL wheels or stick with 15" alloys.

Here's my previous gen CL wheels, I use them in the winter (there are about 4 or so styles out there):