A) Tire pressure varies from vehicle to vehicle. So, the recommended tire pressure depends on what kind of vehicle you own. For passenger cars, the ideal tire pressure is 32 to 35 psi. For an SUV, the recommended tire pressure is 40 to 42 psi. But if you are an owner of a truck, keep your tire pressure between 50 to 60 psi. Additionally, larger trucks require up to 105 psi tire pressure.