Figured Id ask this crew here for a better response than FB! I have a 2018 2500 Mega Cab, rear air if that makes a difference and just installed the new ATW4. They're Load F and Im trying to determine a good starting point for pressure to do my chalk testing. Stock calls for 65 F and 80R. Glancing at Toyo's chart, if Im reading correctly, I should start at 60psi F and and 45 R? Im just trying to get a good starting point to chalk test unless someone has nailed it on their truck, Im open to suggestions