A buddy of mine has a set of FX4 wheels with Hankook Dynapros with about 40% tread left on them, 285/65/18. He's wanting $350 for the lot. Question, my XLT has 17s and is leveled, will they work? Will they affect my speedo much?

 

Use the tire conversion calculator at tire rack.com.
You input your current size and the new size and it will show you the speed difference, positive or negative.

 

Ok, thanks.