I need to order 2 new back tires. I have 18" dd wheels in the back and 18" wheels in the front the fronts are 245/45/18 and i was wondering can i put a 285/40/18 on the back or will that tire be too tall? I have steeda sport springs now with an airbag kit but was thinkin of changing to steeda drag springs so that answers ride height questions. I am also strongly considering buying 17" wheels for the front to give the car a lil rake. Will the back tires fot or do i need to buy 285/35/18 tires?

 

You need a 285/35/18.

 

yup.