tire pressure
#3
I checked my car after taking delivery and it was 35 on all 4 tires. Even though the rear is suppose to be 37 or 38, I just kept them all the same since there is nitrogen in it.
#4
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BTW, the factory didn't set the air pressure. Your dealer did. And the nitrogen thing is so overrated. Whole air is already 78% nitrogen. What you really want removed is the water. Humidity in the tire will upset things more than anything else.
#5
Lobuxracer thanks for coming thru, my tires have 3 PSI variance amongst them with a needle style gauge.
How do you know the dealer sets the pressure, or do you mean they check and make sure when it's in the lot before selling to you?
I also wanted to see if I can safely run a bit more pressure since the pot holes here are really bad.
I like the nitrogen idea ... but still got to maintain the car instead of avoiding it! a little regular air mixed it won't hurt anything.
How do you know the dealer sets the pressure, or do you mean they check and make sure when it's in the lot before selling to you?
I also wanted to see if I can safely run a bit more pressure since the pot holes here are really bad.
I like the nitrogen idea ... but still got to maintain the car instead of avoiding it! a little regular air mixed it won't hurt anything.
Last edited by SC3coupe; 08-01-07 at 09:34 PM.
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#8
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Lobuxracer thanks for coming thru, my tires have 3 PSI variance amongst them with a needle style gauge.
How do you know the dealer sets the pressure, or do you mean they check and make sure when it's in the lot before selling to you?
I also wanted to see if I can safely run a bit more pressure since the pot holes here are really bad.
I like the nitrogen idea ... but still got to maintain the car instead of avoiding it! a little regular air mixed it won't hurt anything.
How do you know the dealer sets the pressure, or do you mean they check and make sure when it's in the lot before selling to you?
I also wanted to see if I can safely run a bit more pressure since the pot holes here are really bad.
I like the nitrogen idea ... but still got to maintain the car instead of avoiding it! a little regular air mixed it won't hurt anything.
I run higher pressures because I spend a lot of time over 70 mph. An awful lot. It helps with tread life and handling. The factory recommended pressure is for the average driver under average conditions. If you are not that guy, you need to experiment a bit with pressures to get the best combination of tire wear and handling to suit your preferences and your wallet.
#9
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I put 40psi on all 4 tires after my TPMS went off one morning.
I was pissed when it went off because it was 5am in the morning I had to drive back to OC from Riverside. I stopped at a local gas station (still dark out). Visuablly checked all the tires, they all seemed fine. So I start pumping air. So I put 40psi in all 4 tires because I didnt know which one was low.
When this happend I was kind of disappointed in my IS. Because I barely had 3k miles on it and already warning lights came on. My previous car which was an Integra had for 8 yrs drove nearly 200k miles not a single engine check, etc. I just want my Lexus to be the same. I just wish there was a way to disable the TPMS for good. I would of done that the first time I got my car.
I was pissed when it went off because it was 5am in the morning I had to drive back to OC from Riverside. I stopped at a local gas station (still dark out). Visuablly checked all the tires, they all seemed fine. So I start pumping air. So I put 40psi in all 4 tires because I didnt know which one was low.
When this happend I was kind of disappointed in my IS. Because I barely had 3k miles on it and already warning lights came on. My previous car which was an Integra had for 8 yrs drove nearly 200k miles not a single engine check, etc. I just want my Lexus to be the same. I just wish there was a way to disable the TPMS for good. I would of done that the first time I got my car.
#10
Lexus Champion
When this happend I was kind of disappointed in my IS. Because I barely had 3k miles on it and already warning lights came on. My previous car which was an Integra had for 8 yrs drove nearly 200k miles not a single engine check, etc. I just want my Lexus to be the same. I just wish there was a way to disable the TPMS for good. I would of done that the first time I got my car.
#11
Lexus Test Driver
I put 40psi on all 4 tires after my TPMS went off one morning.
I was pissed when it went off because it was 5am in the morning I had to drive back to OC from Riverside. I stopped at a local gas station (still dark out). Visuablly checked all the tires, they all seemed fine. So I start pumping air. So I put 40psi in all 4 tires because I didnt know which one was low.
When this happend I was kind of disappointed in my IS. Because I barely had 3k miles on it and already warning lights came on. My previous car which was an Integra had for 8 yrs drove nearly 200k miles not a single engine check, etc. I just want my Lexus to be the same. I just wish there was a way to disable the TPMS for good. I would of done that the first time I got my car.
I was pissed when it went off because it was 5am in the morning I had to drive back to OC from Riverside. I stopped at a local gas station (still dark out). Visuablly checked all the tires, they all seemed fine. So I start pumping air. So I put 40psi in all 4 tires because I didnt know which one was low.
When this happend I was kind of disappointed in my IS. Because I barely had 3k miles on it and already warning lights came on. My previous car which was an Integra had for 8 yrs drove nearly 200k miles not a single engine check, etc. I just want my Lexus to be the same. I just wish there was a way to disable the TPMS for good. I would of done that the first time I got my car.
I assume that if you put 40 psi in the tires, you had a tool to measure air pressure. Tip: That same tool could have been used to find out which tire was low.
The light coming on for TPMS doesn't mean there's anything defective on your car...it was doing its job. Just to be clear, disabling TPMS will not keep your tires from ever becoming low on air...it will just keep you ignorant of the problem.
Last edited by 15951; 08-02-07 at 05:04 PM.
#12
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Let me make sure I understand you. You got pissed at your car because it let you know you had low air pressure in one of your tires, so rather than checkng the pressures and filling them to spec, you "punished" your car by gassing up the tires to 40 psi.
I assume that if you put 40 psi in the tires, you had a tool to measure air pressure. Tip: That same tool could have been used to find out which tire was low.
The light coming on for TPMS doesn't mean there's anything defective on your car...it was doing its job. Just to be clear, disabling TPMS will not keep your tires from ever becoming low on air...it will just keep you ignorant of the problem.
I assume that if you put 40 psi in the tires, you had a tool to measure air pressure. Tip: That same tool could have been used to find out which tire was low.
The light coming on for TPMS doesn't mean there's anything defective on your car...it was doing its job. Just to be clear, disabling TPMS will not keep your tires from ever becoming low on air...it will just keep you ignorant of the problem.
I guess it was just a bad morning for me.
Last edited by gsrthomas; 08-02-07 at 05:55 PM.
#14
Super Moderator
32psi is too low for the IS; I believe the recommended pressures are 35F/37R.
#15
Super Moderator
If you lower the pressure in an area with lots of potholes, you increase the chance of bending your rims. I speak from experience (not on the Lexus, fortunately).