How to Calculate Tire Air Pressure by Vehicle Weight

Tire pressure is important for long-lasting tires.

Maintaining proper tire pressure in your tires is important to the performance and handling of your vehicle. Improper tire inflation reduces tire wear and eventually causes tire failure. Gas mileage can also be improved when your tires are inflated properly. Although many newer tires have inflation recommendations, you can calculate the required tire pressure for your specific vehicle by weight, using a calculator.

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Calculator

Instructions

- 1
  
  Open the driver's door of your automobile and locate the sticker on the door jamb.
- 2
  
  On the sticker locate the weight of your particular vehicle.
- 3
  
  Type the weight of your vehicle into a calculator and divide that number by 100. The resulting number (or quotient) is the recommended tire pressure for your vehicle. It is recommended that the tire pressure be within 4 pounds of this figure.

Modified: Tire Pressure Guide

Photo Credit fixing tire image by Joann Cooper from Fotolia.com

Comments

100003062964354 Apr 10, 2012
What if your car came with a 35 max psi rated tire but replacement tires are rated a max of 44 psi, do I still use the 30 psi cold pressure recommended by the car manufacturer? That to me seems to be severely underinflated and could cause all sorts of problems in handling, gas milage, etc.

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How to Calculate Tire Air Pressure by Vehicle Weight

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