[jamesrayth]

This morning I got a TPMS warning light, so I went into the TPMS screen and looked at the tire pressures as I drove to work. The tire it was saying was losing pressure was the rear passenger side wheel. All wheels read 30psi the whole way to work. I drove the car for lunch again and sure enough, its still complaining about that right tire. The tire is not visibly flat, there is nothing stuck in the tire. Anybody had issues or know how to shut it up?

 

[TheShaddix]

30 psi is too low for these tires. You should have them around 35-42. Mine are 38 cold, 42 when driven for a while. I think one of your tires is complaining because it's dipping below 30 a bit.

 

[jamesrayth]

Really? Dealer sold it to me with tires at 30. I'll check the sidewall and see what tires I have.

 

[TheShaddix]

I think that's the way they keep cars at the lot until sale. 30psi is when most tpms are triggered. You might already know this, but with higher psi you get better steering response and such. The lower the psi, the more grip since the contact patch increases, but that lowers your mpg. Check the door tag to see the recommended psi number. The dealer might have forgotten or just didn't know.

 

[Poolnoodle]

Dealer also prob sold it to you with "nitrous in the tires" which is a huge f***ing scam lol. 35 lbs minimum in these tires.

 

[Voodoo Idol]

Um, no, not 35 - 42, and not 30. The door panel says 33psi. Anything from 32ish to about 36ish would be fine. Anything over that and you're wearing out the center of the tread more than the edges, and anything less than that, vice versa.

You get better steering response at higher psi because less of the tire is contacting the ground, which is no bueno.

 

[solo_gen]

30 psi is too low for these tires. You should have them around 35-42. Mine are 38 cold, 42 when driven for a while. I think one of your tires is complaining because it's dipping below 30 a bit.

When I first bought my car, the tires were at 60 psi!!! 60 Freaking P.S.I.!!!
I don't know how it didn't blow on the drive home form the dealer. Good thing I checked before I went to work the next day. (Nitrogen tires..... they tried to up charge me $1000 lol)

 

[TheShaddix]

I checked the door, it is indeed 33 psi cold. And you get better steering response because the tire is stiffer, so there is less flex when you turn it. What you're talking about is easier steering with less contact patch.

 

[Voodoo Idol]

When you overinflate the tires they bulge along the center of the tread, reducing the contact patch.

 

[Racer1ab]

Just a data point, I had the same thing happen on my car last night. Pressures are set for 35 psi cold, all normally around 38 while driving and the display flashed and began to give me a 20 psi reading from the right rear. I checked the tires and all appeared fine, so I continued home. Several checks later thoughout the night, RR tire still seems fine, so I decided to change the tire before work if I had to.


I came out this morning to find the tire as I left it, so I got underway and saw the pressures were reading normal again. Bizarre.

 

[Mohkx]

When I first bought my car, the tires were at 60 psi!!! 60 Freaking P.S.I.!!!
I don't know how it didn't blow on the drive home form the dealer. Good thing I checked before I went to work the next day. (Nitrogen tires..... they tried to up charge me $1000 lol)

60? Aren't the stock tired rated for 41-44 max?

 

[R1600Turbo]

60? Aren't the stock tired rated for 41-44 max?

The assembly plant sets them high to avoid flat spotting in transit. It's the responsibility of the dealership to lower them to the correct pressures before delivery to the customer.

 

[ClownSlap]

for best ride and great traction keep tires 33psi cold as in in the morning before you drive or after you have not drive for about a hour .. when you drive after a few miles should jump to 35psi ..Also over inflate your tires you have less tire on the road more prone to less traction and will hammer your suspension on the bumps