GS - 4th Gen (2013-2020) Discussion about the 2013 and up GS models

Check your Donut Spare tire pressure, mine was 15PSI!

Thread Tools
 
Search this Thread
 
Old 04-11-19, 03:47 PM
  #1  
peasodos
Lexus Test Driver
Thread Starter
iTrader: (1)
 
peasodos's Avatar
 
Join Date: Feb 2017
Location: USA
Posts: 5,523
Received 2,229 Likes on 1,450 Posts
Exclamation Check your Donut Spare tire pressure, mine was 15PSI!

The spare tire in my car has never been used and I checked the tire pressure today and it read 15PSI, It's supposed to be at 60. I pumped it back up to 60.

I'd advise everyone to check their spare tire and post your PSI, so we'll know if it's a widespread issue.

Last edited by peasodos; 04-11-19 at 04:07 PM.
The following 2 users liked this post by peasodos:
drgrant (04-14-19), kode3 (04-11-19)
Old 04-11-19, 03:57 PM
  #2  
bclexus
Lexus Test Driver
 
bclexus's Avatar
 
Join Date: Nov 2014
Location: Texas
Posts: 9,343
Received 2,179 Likes on 1,562 Posts
Default

Oh man, that means I would have to unload a thousand pounds of golf clubs, golf shoes, golf *****, spare clubs, umbrellas, towels and other equipment and stuff to get to my spare tire.

Good advice!
The following users liked this post:
Mike552 (04-11-19)
Old 04-11-19, 04:05 PM
  #3  
peasodos
Lexus Test Driver
Thread Starter
iTrader: (1)
 
peasodos's Avatar
 
Join Date: Feb 2017
Location: USA
Posts: 5,523
Received 2,229 Likes on 1,450 Posts
Default

Originally Posted by bclexus
Oh man, that means I would have to unload a thousand pounds of golf clubs, golf shoes, golf *****, spare clubs, umbrellas, towels and other equipment and stuff to get to my spare tire.

Good advice!
A good time to tidy up the trunk.
Old 04-11-19, 04:27 PM
  #4  
np20412
Lexus Test Driver
 
np20412's Avatar
 
Join Date: Aug 2003
Location: Florida
Posts: 6,339
Received 360 Likes on 249 Posts
Default

Thanks for the reminder! Will check it when I gas up this week.
Old 04-11-19, 04:34 PM
  #5  
bclexus
Lexus Test Driver
 
bclexus's Avatar
 
Join Date: Nov 2014
Location: Texas
Posts: 9,343
Received 2,179 Likes on 1,562 Posts
Default

Originally Posted by peasodos
A good time to tidy up the trunk.

Old 04-11-19, 04:59 PM
  #6  
jdpdata
Instructor
 
jdpdata's Avatar
 
Join Date: Mar 2017
Location: CA
Posts: 1,159
Received 444 Likes on 305 Posts
Default

Yup mine was 15psi too. Pump it up to 60psi few weeks ago.
Old 04-11-19, 05:21 PM
  #7  
bclexus
Lexus Test Driver
 
bclexus's Avatar
 
Join Date: Nov 2014
Location: Texas
Posts: 9,343
Received 2,179 Likes on 1,562 Posts
Default

I'm going to pump my spare tire up to 75psi...once I get all the junk out of the trunk.

PS - I keep a spare wheel lock lug in the rear seat console so I don't need to dig it out of the trunk when I get the tires/wheels rotated.
Old 04-11-19, 08:02 PM
  #8  
chinee
Racer
 
chinee's Avatar
 
Join Date: Jun 2018
Location: FL
Posts: 1,916
Received 939 Likes on 575 Posts
Default

My tires go down about 2 psi a month so I've pumped them up 3 times already. Each time I go through this exercise, I check the spare as well, and found that it loses pressure faster than the regular tires. Each time I've found the spare to be 45-52 psi.
Moral of this story, check your spare when you do your other tires, and do not trust the tire shop do so... I've been stranded more than once because of a severely under-inflated spare.
Old 04-11-19, 08:22 PM
  #9  
peasodos
Lexus Test Driver
Thread Starter
iTrader: (1)
 
peasodos's Avatar
 
Join Date: Feb 2017
Location: USA
Posts: 5,523
Received 2,229 Likes on 1,450 Posts
Default

Originally Posted by chinee
My tires go down about 2 psi a month so I've pumped them up 3 times already. Each time I go through this exercise, I check the spare as well, and found that it loses pressure faster than the regular tires. Each time I've found the spare to be 45-52 psi.
Moral of this story, check your spare when you do your other tires, and do not trust the tire shop do so... I've been stranded more than once because of a severely under-inflated spare.
I guess the spare looses air on it's own over time, seems like eventually it will go down to 15 psi, probably good to check it couple times a year. I'm going to check my girlfriends Honda to see if it does the same thing.
Old 04-13-19, 05:53 AM
  #10  
jonathancl
Racer
 
jonathancl's Avatar
 
Join Date: May 2004
Location: Philadelphia
Posts: 1,713
Received 364 Likes on 253 Posts
Default

Yeah found this after purchasing my last car: despite dealer and state inspections, the spare was 25psi...should have been 60.

Gotta make that part of spring cleaning.
Old 04-15-19, 10:14 AM
  #11  
bclexus
Lexus Test Driver
 
bclexus's Avatar
 
Join Date: Nov 2014
Location: Texas
Posts: 9,343
Received 2,179 Likes on 1,562 Posts
Default

I pulled a thousand pounds of golf equipment out of my trunk so I could check the air pressure of my spare tire...knowing the air pressure would be very low since I've neglected to check it. Well, there was no surprise - my spare tire only had 12 PSI of air pressure! My car is 76 months (6 years & 4 months) old from the build date, and I'm pretty sure my spare tire air pressure had ever been checked.

Even though the recommended cold tire inflation pressure for the spare tire is 60 psi I had my spare tire filled to 75 psi (on a 72° day) since I would rather have it over-inflated rather than under-inflated, and knowing the spare tire will lose air pressure overtime. For those of you living in cooler climate areas keep in mind that cold winter temperatures could drop the tire pressure of your spare tire by 10 psi compared to the air pressure it was inflated to on a hot summer day.

I [now] have a reminder on my calendar to check the air pressure of my spare tire once a year (on Tax Day - April 15th).
Old 04-15-19, 12:17 PM
  #12  
NJLEXES
Intermediate
 
NJLEXES's Avatar
 
Join Date: May 2004
Location: New Jersey
Posts: 369
Received 42 Likes on 36 Posts
Talking

Or just carry a spare air compressor in the car....
Comes in handy in case you need to put air in the tires plus it saves you a trip to the gas station.

For $20-25, I carry one in all my cars.
Old 04-15-19, 02:17 PM
  #13  
TOPENDMS
Former Sponsor
 
TOPENDMS's Avatar
 
Join Date: Jun 2018
Location: CT
Posts: 1,461
Received 117 Likes on 108 Posts
Default

Wow, interesting find. They do say that air is able to escape through the tire rubber, which is why some dealers offer nitrogen. Nitrogen molecules are bigger than the molecular gaps in the tire rubber. Might be a good idea for the spare too.
Old 04-15-19, 02:37 PM
  #14  
ItzFilyO
Lexus Test Driver
 
ItzFilyO's Avatar
 
Join Date: Feb 2013
Location: California
Posts: 5,813
Received 1,047 Likes on 662 Posts
Default

Originally Posted by bclexus
I'm going to pump my spare tire up to 75psi...once I get all the junk out of the trunk.

PS - I keep a spare wheel lock lug in the rear seat console so I don't need to dig it out of the trunk when I get the tires/wheels rotated.
Imma steal ur wheels now. I heard u have spinners on ur GS.
Old 04-15-19, 02:44 PM
  #15  
peasodos
Lexus Test Driver
Thread Starter
iTrader: (1)
 
peasodos's Avatar
 
Join Date: Feb 2017
Location: USA
Posts: 5,523
Received 2,229 Likes on 1,450 Posts
Default

Basically the moral of the story is tires loose air over time and if you have a 2013 and never checked your spare, it's flat.

Any car with a donut tire should check the spare tire pressure once a year. I carry a compact tire inflator in my trunk, so I would have been fine if I really needed to use it and found out it was flat.


Quick Reply: Check your Donut Spare tire pressure, mine was 15PSI!



All times are GMT -7. The time now is 06:39 PM.