First of all I have a 3.6 ltr v6 2009, my tires 255/55 R18 Pirelli. No modification. And no hydraulics. Driving against 10 Jeeps (Modified), 4 prados (3 old & 1 new 2010), 1 Nissan, 3 landcrusers, 2 Mitsubishi. All driving at 12 - 14 psi. I had 14 psi in front and 12 psi in the back. All the...