im trying to find wheels that work on my 2012 TL and im having trouble finding the right sizing. my tire size is 245/45 5x120 and my size is 18s. any recommendations for wheels that would fit this or should i just get all new tires as well?

 

you're kinda doing it backwards.
you have the tire fit the wheel, NOT wheel fit the tire...
unless of course, you're trying to do this on a budget...then you wont have many options...

but 18x8-10 is SO common, you could almost head down to your local wheel shop

 

Hop on Tirerack. They have a ton of options. Just put in your vehicle info and voila, they show you about 100 wheels that match the car.

 

+1 for Tirerack