I just go Nitto 555R's 315/35/17 mounted on the stock rims, and 555 Extreme's 275/40/17 up front, purchased from Discout Tire. I ckecked the recommended tire pressure both on the tire and Nitto's website, and all it says is that the maximum is 44 PSI. I put 35 on the rear and 32 up front. What do you guys recommend?