I have 20” rims on my 2012 crewmax. I changed the suspension to the TRD Offroad to help soften the ride. Tires are Perelli Scorpion Verde A/S 275/55R20 and PSI is at 40. Load on these are [email protected] max. Ride is still somewhat harsh on particular bumps, RR tracks at 15 mph. Would changing to 18” with a taller tire be better? Or a different tire? Let me know your thoughts.