That is a beefy tire on a softer spring. The 215/45/16 falkens grip awsome for me with the h&r race springs. I think the race springs $200 and a little rolling should do it but your running a 50 series.
2013 F-150 FX2 SUPERCAB 5.0 BRIGHT RED. HIDS, NAVIGATION
LEATHER, SONY 700WATT SYSTEM, 9.8 1/8 mile for now stock