IS - 3rd Gen (2014-present) Discussion about the 2014+ model IS models

tire pressure

Thread Tools
 
Search this Thread
 
Old Jul 10, 2018 | 05:24 PM
  #1  
siestakey's Avatar
siestakey
Thread Starter
Driver School Candidate
 
Joined: Jul 2018
Posts: 1
Likes: 0
From: fl
Default tire pressure

when I start my car the tire pressure is as low as 29 and as I drive it might go to 33----I live in hot florida----is this normal?
Reply
Old Jul 10, 2018 | 05:28 PM
  #2  
a1rh3adsz's Avatar
a1rh3adsz
Driver
 
Joined: Aug 2017
Posts: 175
Likes: 11
From: NY
Default

Yes, that is normal, as the tires get hot the psi will slightly increase. 29 is pretty low, might want to add some air to those tires.
Reply
Old Jul 10, 2018 | 05:37 PM
  #3  
Napalvr's Avatar
Napalvr
Advanced
10 Year Member
Liked
Loved
Community Favorite
 
Joined: Jan 2015
Posts: 607
Likes: 85
From: Michigan
Default

Originally Posted by siestakey
when I start my car the tire pressure is as low as 29 and as I drive it might go to 33----I live in hot florida----is this normal?
Here in Michigan I set mine to 35 cold and maybe the pressures go to 38 or so. I’ve had no abnormal tire wear at these settings
Reply
Old Jul 10, 2018 | 06:31 PM
  #4  
Flash5's Avatar
Flash5
Pole Position
5 Year Member
Liked
Loved
Community Favorite
 
Joined: Apr 2018
Posts: 2,626
Likes: 459
From: GA
Default

Mine are at like 36/37 then 39ish once I’ve been driving a while.
Reply
Old Jul 10, 2018 | 08:29 PM
  #5  
nathantse's Avatar
nathantse
Lexus Test Driver
 
Joined: Dec 2015
Posts: 1,476
Likes: 60
From: California
Default

Your driver side door has a sticker stating the recommended tire pressure.. 29 is low.

It should be 36 cold, and will eventually warm up to ~39 driving.
Reply
Old Jul 11, 2018 | 06:31 AM
  #6  
Sasnuke's Avatar
Sasnuke
Lexus Test Driver
5 Year Member
Liked
Loved
Community Favorite
 
Joined: Feb 2017
Posts: 6,260
Likes: 1,752
From: Richmond Hill, Ontario, Canada
Default

Originally Posted by Flash5
Mine are at like 36/37 then 39ish once I’ve been driving a while.
Originally Posted by nathantse
Your driver side door has a sticker stating the recommended tire pressure.. 29 is low.

It should be 36 cold, and will eventually warm up to ~39 driving.
Make that 3 people for the same comments above.
Reply
Old Jul 11, 2018 | 09:11 AM
  #7  
otakusan's Avatar
otakusan
Intermediate
 
Joined: Oct 2015
Posts: 403
Likes: 46
From: Alberta
Default

that's why more people are switching to nitrogen, specially if you see dramatic temperature changes between day and night
Reply
Old Jul 11, 2018 | 09:33 AM
  #8  
arentz07's Avatar
arentz07
Moderator
5 Year Member
Shutterbug
Community Influencer
Community Favorite
 
Joined: Nov 2016
Posts: 9,590
Likes: 4,784
From: GA
Default

Originally Posted by otakusan
that's why more people are switching to nitrogen, specially if you see dramatic temperature changes between day and night
I ran nitrogen when I first got the car for a while, and have been using air recently. I haven't noticed a big difference between the two. What makes the most difference is direct sunlight versus shade, IMO.
Reply
Old Jul 11, 2018 | 10:23 AM
  #9  
E46CT's Avatar
E46CT
Lexus Test Driver
10 Year Member
Liked
Loved
Community Favorite
 
Joined: Mar 2016
Posts: 9,507
Likes: 2,575
Default

you need to fill the tires every 3 months or so. They'll tend to lose pressure even with a new wheel and new bead. leaking beads, hardened rubber, valve stem seals etc only make the problem worse.

so at 29 you definitely have not filled air for a good while now. Get it back up to 35-37 when cold. Rinse and repeat after a few months.
Reply
Old Jul 11, 2018 | 11:24 AM
  #10  
2013FSport's Avatar
2013FSport
Lexus Test Driver
5 Year Member
Liked
Loved
Community Favorite
iTrader: (2)
 
Joined: Aug 2017
Posts: 6,720
Likes: 1,570
From: OR
Default

Do keep in mind that the door sill pressure recommendations are for a fully loaded vehicle...

That said, running the max pressure listed here will likely wear the center out of your REAR tires over the course of 20,000mi if you run around solo and don't have 25 gold bars in the trunk.

As for the front; if your edges are being eatin alive, you might opt to run the max pressure up front.
Reply
Old Jul 11, 2018 | 11:26 AM
  #11  
Flash5's Avatar
Flash5
Pole Position
5 Year Member
Liked
Loved
Community Favorite
 
Joined: Apr 2018
Posts: 2,626
Likes: 459
From: GA
Default

Originally Posted by 2013FSport
Do keep in mind that the door sill pressure recommendations are for a fully loaded vehicle...

That said, running the max pressure listed here will likely wear the center out of your REAR tires over the course of 20,000mi if you run around solo and don't have 25 gold bars in the trunk.

As for the front; if your edges are being eatin alive, you might opt to run the max pressure up front.
Last I checked, the sticker on the door has the recommended values not the max.
Reply
Old Jul 11, 2018 | 12:12 PM
  #12  
2013FSport's Avatar
2013FSport
Lexus Test Driver
5 Year Member
Liked
Loved
Community Favorite
iTrader: (2)
 
Joined: Aug 2017
Posts: 6,720
Likes: 1,570
From: OR
Default

Originally Posted by Flash5

Last I checked, the sticker on the door has the recommended values not the max.
Wording on the 2IS reads xx.x psi w/5 passengers 825lbs.
Implying max load and cold pressure setting.

Like yours, it does not offer a minimum load/psi. Likely confusing for some?

Obviously the tires choosen should exceed the cars maximum load per tire. That said, many read the tires Max PSI which is the wrong information. Well unless the tires max load matches the cars max load. Then the pressure may be correct.
Reply
Old Jul 11, 2018 | 12:13 PM
  #13  
Flash5's Avatar
Flash5
Pole Position
5 Year Member
Liked
Loved
Community Favorite
 
Joined: Apr 2018
Posts: 2,626
Likes: 459
From: GA
Default

Originally Posted by 2013FSport
Wording on the 2IS reads xx.x psi w/5 passengers 825lbs.
Implying max load and cold pressure setting.

Like yours, it does not offer a minimum load/psi. Likely confusing for some?

Obviously the tires choosen should exceed the cars maximum load per tire. That said, many read the tires Max PSI which is the wrong information. Well unless the tires max load matches the cars max load. Then the pressure may be correct.
You’re talking a 2IS I’m talking a 3IS which are 2 different generations of cars. This is a 3IS thread.
Reply
Old Jul 11, 2018 | 12:28 PM
  #14  
arentz07's Avatar
arentz07
Moderator
5 Year Member
Shutterbug
Community Influencer
Community Favorite
 
Joined: Nov 2016
Posts: 9,590
Likes: 4,784
From: GA
Default

Let's not revive this thread: https://www.clublexus.com/forums/is-...ire-psi-3.html

Seriously, as long as you have stock wheels, just following the sticker on the inside of the door, except for rare cases such as track days.
Reply
Old Jul 11, 2018 | 12:53 PM
  #15  
Flash5's Avatar
Flash5
Pole Position
5 Year Member
Liked
Loved
Community Favorite
 
Joined: Apr 2018
Posts: 2,626
Likes: 459
From: GA
Default

Originally Posted by arentz07
Let's not revive this thread: https://www.clublexus.com/forums/is-...ire-psi-3.html

Seriously, as long as you have stock wheels, just following the sticker on the inside of the door, except for rare cases such as track days.
Lol yeah true.
Reply



All times are GMT -7. The time now is 03:33 AM.