* Tire size: The sticker on the driver's side doorjamb (or in the owner's manual) will specify the recommended tire size(s) for your van. Different tire sizes require different pressures.
* Load: How much weight is in the van? A heavier load requires higher pressure.
* Tire type: The sidewall of the tire will list its maximum pressure. This is usually much higher than the recommended pressure.
Where to find the correct inflation pressure:
1. Driver's side doorjamb sticker: This sticker is the most reliable source. It will list the recommended tire pressure for your specific van and tire size. Look for a sticker with information about tire pressure, and often tire size as well.
2. Owner's manual: Your owner's manual should also specify the recommended tire pressure.
3. Tire sidewall: The tire sidewall will indicate the maximum inflation pressure, but this is *not* the recommended pressure for daily driving. Never exceed the maximum pressure listed on the tire.
Do not rely on a generic answer. Using the wrong tire pressure can lead to poor handling, reduced fuel economy, uneven tire wear, and even tire failure. Always check the sources listed above for the correct pressure for your specific vehicle and load.
