I'm interested in buying these set of tires and i need help with knowing the size of the tires to get. recommendations for tires would be nice too. i need all season tires.
http://www.ebay.com/itm/18-5x120-Eff...60892461790%26

 

i have the 2012 tl tech package

 

I just recently put on a set of BMW M6 18" wheels. Our bore size is 64.1 and the wheels you are looking to buy has a bore of 74.1. So you will also need to get a set of hub rings that is 64mm to 74mm. The wheels that I got is also a 38mm offset so these wheel look great. The lower offset pushes the wheels out and is flush with the body. As far as tires I put on Bridgestone RE970AS 245/45/18 and love them. Hope this helps.

 

Those look pretty much identical to the RonJon Harrows

On an 18x8 rim you should follow your stock size of 245/45/18.