Factory Specs on Tire Pressure?

In the third world of chassis tuning, one of the ways to adjust the handling of the car is to adjust the air pressure. A tire pressure differential like the one given by RTG would promote understeer. This is seen as a safer condition for the average driver than oversteer. Given the rash of lawsuits for SUV rollovers, it would seem that Suzuki is doing a CYA here. (IIRC the Suzuki Samarai was deemed a problem child at one point.)

Without knowing things like rim width, f/r weight distribution, general use of the vehicle, it's tough to make a recommendation for tire pressures. I do not recommend exceeding the max rated pressure on the sidewall of the tire. Using the tried and tested SWAG technique employed in the third world of chassis tuning, try starting with the rear tire pressures to 36 psi (cold) and the fronts to 30 psi. Drive the car. If it feels a little tail happy, drop the pressures at the front by 2 lb increments until you feel comfortable. (Don't go below 26.) If the car drives fine, increase the front pressures in 2 lb increments until either the car begins to feel tail happy or you reach the inflation of the rear tires.

This seems bass ackwards and is time consuming. But this is one those old-school NASCAR experiences you can do at home. If in the event the tires show signs of over inflation, drop pressures maintaining the same tire pressure differential.

"Let's be careful out there." - Phil Esterhaus, Hill Street Blues