Dealer Tire Pressure 38
#3
Driver
Thread Starter
So the question is why will the dealer on new tires put in 38 PSI when the car door says 30 PSI?
#4
Lexus Test Driver
Because it depends entirely on the tire installed and what they feel is better. The 30 PSI is a general guideline set by Lexus based on their testing and shouldn't be regarded as what you should set the pressure for, no matter what. Why is that? Because it can also depend on tire wear. If 30PSI is too low for the tire, the edges will wear more than the tires. The proper pressure is dictated by a combination of noise level(typically more noise with higher pressure), tire wear, and gas mileage.
The dealership may be doing it because they want to improve gas mileage, because it was something that the manufacturer to told them, or just a random number set by some random person. If you can get even tire wear, the noise level is fine, then running 38 PSI is fine(as long as it doesn't exceed the maximum pressure when hot).
And measure your tire pressure cold.
The dealership may be doing it because they want to improve gas mileage, because it was something that the manufacturer to told them, or just a random number set by some random person. If you can get even tire wear, the noise level is fine, then running 38 PSI is fine(as long as it doesn't exceed the maximum pressure when hot).
And measure your tire pressure cold.
#5
Driver
Thread Starter
Because it depends entirely on the tire installed and what they feel is better. The 30 PSI is a general guideline set by Lexus based on their testing and shouldn't be regarded as what you should set the pressure for, no matter what. Why is that? Because it can also depend on tire wear. If 30PSI is too low for the tire, the edges will wear more than the tires. The proper pressure is dictated by a combination of noise level(typically more noise with higher pressure), tire wear, and gas mileage.
The dealership may be doing it because they want to improve gas mileage, because it was something that the manufacturer to told them, or just a random number set by some random person. If you can get even tire wear, the noise level is fine, then running 38 PSI is fine(as long as it doesn't exceed the maximum pressure when hot).
And measure your tire pressure cold.
The dealership may be doing it because they want to improve gas mileage, because it was something that the manufacturer to told them, or just a random number set by some random person. If you can get even tire wear, the noise level is fine, then running 38 PSI is fine(as long as it doesn't exceed the maximum pressure when hot).
And measure your tire pressure cold.
#6
38 PSI is high , sometimes they can make a mistake at the repair shop. 38 psi for sure will give you a very rough ride on the ES350 , I also have an ES 350 and i usually keep mines at 34 or 35 psi. Any higher and i can tell the difference as the ride is very rough . look on the tire itself, it may have the recommended psi for the tire. Get a good tire pressure gauge and I suggest u take some air out of it.
#7
Mfg. recommends 30 psi for all around normal driving . This is the optimum tire pressure for a comfortable , smooth quiet ride. Normal tire rotation will provide you with the best wear for that brand tire. If some want to play with various pressures it's OK as they need to be the judge of how they want the car to ride. I am about to replace my OEM Bridgestones after 35,000 miles as they are almost down to the wear bars. The ride even today is quiet and smooth and I have always kept the tire pressures at 30 psi. Do what you like and enjoy the ride.
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