Quote:
Originally Posted by wdfifteen
I add 2 or 3 PSI to the recommended pressure.
With nothing more to go on but articles in automotive magazines, I believe the manufacturer's recommended tire pressure is a compromise between ride quality, tire wear, and mileage. Ride quality would call for a lower pressure. Since I'm not that interested in a softer ride, I add 2 or 3 PSI to the recommended pressure to offset that criterion.
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The rated pressures are also for the max vehicle load. For example my wife's small SUV is 36/42 psi front/rear, which is way too high in the rear when it's just her and I in the car.