How are you guys jacking up your Yaris?

[b_hickman11]

Originally Posted by nemelek

I will bet you $100 that you can't find any proof where Bridgestone recommended to Toyota to put 32 PSI in their 185 60R 14 tires for the Yaris.
There is probably an industry guidelines for tire type and sizes. The amount of load on a tire and the corresponding the PSI are in those guidelines. It's Toyota's responsibility to pick a correct tire and recommend the proper PSI.

The weight of a vehicle does matter. If the Yaris was a 1,000 pounds heavier or lighter their might be a different tire or PSI recommendation. On the chart below for the Dodge Ram you will note that the front tires for a light load with the diesel require 10 to 15 PSI more than the V-8. Why? Because the diesel weighs a lot more. Notice when the truck goes from light load to heavy load the PSI for the rear tires go from 40 to 70 or 80. Why? Because as the weight increases there is an additional need to increase the PSI. There are some idiots that would put 120 PSI in the rears. Do you really think that "The.Tire.Company." made this chart for Dodge? More likely Dodge engineers figured the load for the tires in different situations and used the tire guidelines from the manufactures put together this chart.

This chart is for a 6 wheel Dodge rather than a 4 wheel Dodge, correct?