Tire pressure
#1
Tire pressure
Good day all. I have a 2017 E300 which has been problem free for me since purchase in June 2017. However, recently there seems to be a slow and gradual loss of tire pressure in all 4 wheel.I first noticed it (albeit only in 2 tires) about 4 months ago, I leveled off the air pressure in all 4 tires to 32 psi. Now I'm showing 26 lbs psi in all 4 tires and once again will fill them all to the same pressure. Has anyone else experienced this problem. Any input would be appreciated before I take the car to the dealer. Thanks
#2
MBWorld Fanatic!
Joined: Aug 2004
Posts: 3,447
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From: Tampa, FL
2019 E450 4Matic & 2018 E400 4Matic
Good day all. I have a 2017 E300 which has been problem free for me since purchase in June 2017. However, recently there seems to be a slow and gradual loss of tire pressure in all 4 wheel.I first noticed it (albeit only in 2 tires) about 4 months ago, I leveled off the air pressure in all 4 tires to 32 psi. Now I'm showing 26 lbs psi in all 4 tires and once again will fill them all to the same pressure. Has anyone else experienced this problem. Any input would be appreciated before I take the car to the dealer. Thanks
#3
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Joined: May 2018
Posts: 2,139
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From: Long Island, NY
2019 E 450, 2016 E350 4matic (retired), 2018 Ford Edge Sport, 2008 Porsche Boxster
As a general rule for every 10 degree drop in temperature there is a drop of 1 lb/psi.
However my experience with low profile tires (I have Boxster) is that the loss of pressure is greater then 1 lb/psi per 10 degrees: I assume that is because of the lower volume of air in the low profile tires.
On my E350 for every 10 degrees I lose a minimum of 2 psi: the Boxster 3 psi and the Ford Edge Sport between 1 and 2 lbs.
Several years ago when we experienced a drop of 25 degrees overnight the warning light came on advising me of low pressure in all four tires.
I have an air compressor and at this time of year I add air to my tires on a regular basis.
Just my $.02:
I keep my tires 10% higher than the suggested pressure: I find little to no difference in the ride quality. On the other hand, gas mileage goes up 1 to 2 mpg. Old trick I learned many years ago driving trucks!
see: https://www.google.com/search?q=tire...hrome&ie=UTF-8
However my experience with low profile tires (I have Boxster) is that the loss of pressure is greater then 1 lb/psi per 10 degrees: I assume that is because of the lower volume of air in the low profile tires.
On my E350 for every 10 degrees I lose a minimum of 2 psi: the Boxster 3 psi and the Ford Edge Sport between 1 and 2 lbs.
Several years ago when we experienced a drop of 25 degrees overnight the warning light came on advising me of low pressure in all four tires.
I have an air compressor and at this time of year I add air to my tires on a regular basis.
Just my $.02:
I keep my tires 10% higher than the suggested pressure: I find little to no difference in the ride quality. On the other hand, gas mileage goes up 1 to 2 mpg. Old trick I learned many years ago driving trucks!
see: https://www.google.com/search?q=tire...hrome&ie=UTF-8
#4
MBWorld Fanatic!
Joined: Aug 2004
Posts: 3,447
Likes: 328
From: Tampa, FL
2019 E450 4Matic & 2018 E400 4Matic
As a general rule for every 10 degree drop in temperature there is a drop of 1 lb/psi.
However my experience with low profile tires (I have Boxster) is that the loss of pressure is greater then 1 lb/psi per 10 degrees: I assume that is because of the lower volume of air in the low profile tires.
On my E350 for every 10 degrees I lose a minimum of 2 psi: the Boxster 3 psi and the Ford Edge Sport between 1 and 2 lbs.
Several years ago when we experienced a drop of 25 degrees overnight the warning light came on advising me of low pressure in all four tires.
I have an air compressor and at this time of year I add air to my tires on a regular basis.
Just my $.02:
I keep my tires 10% higher than the suggested pressure: I find little to no difference in the ride quality. On the other hand, gas mileage goes up 1 to 2 mpg. Old trick I learned many years ago driving trucks!
see: https://www.google.com/search?q=tire...hrome&ie=UTF-8
However my experience with low profile tires (I have Boxster) is that the loss of pressure is greater then 1 lb/psi per 10 degrees: I assume that is because of the lower volume of air in the low profile tires.
On my E350 for every 10 degrees I lose a minimum of 2 psi: the Boxster 3 psi and the Ford Edge Sport between 1 and 2 lbs.
Several years ago when we experienced a drop of 25 degrees overnight the warning light came on advising me of low pressure in all four tires.
I have an air compressor and at this time of year I add air to my tires on a regular basis.
Just my $.02:
I keep my tires 10% higher than the suggested pressure: I find little to no difference in the ride quality. On the other hand, gas mileage goes up 1 to 2 mpg. Old trick I learned many years ago driving trucks!
see: https://www.google.com/search?q=tire...hrome&ie=UTF-8
#5
Thanks all for your input. Strange thing is that I had no issues throughout my first year. I think I'm just going to but an air compressor to inflate tires at home instead of running to the gas station. Any recommendations? I see a number of them on Amazon although I also see on one of their top choices some have had issues with the 12V plug in charger. Thanks again for replies. BTW, I had a worse problem with my prior BMW including many false alerts.
#6
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Joined: May 2018
Posts: 2,139
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From: Long Island, NY
2019 E 450, 2016 E350 4matic (retired), 2018 Ford Edge Sport, 2008 Porsche Boxster
Mine is real compressor (expansion tank) that runs on 120 volts Bought it several years ago at Sears. I think it was about $99 on sale. I have three cars and do not have the time to go to a gas station. Luxury yes - but worth every penny!
#7
I use an old (circa 1955) paint sprayer to keep my tires at the proper pressure. It also inflates pool toys, etc. It is very quiet. That's something I can't say about current compressors.
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rbrylaw (10-13-2018)
#14
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Joined: Aug 2004
Posts: 3,447
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From: Tampa, FL
2019 E450 4Matic & 2018 E400 4Matic
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Cambridgehank (10-13-2018)
#16
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Joined: Aug 2004
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From: Tampa, FL
2019 E450 4Matic & 2018 E400 4Matic
#18
MBWorld Fanatic!
Joined: Aug 2004
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From: Tampa, FL
2019 E450 4Matic & 2018 E400 4Matic
Things built in 1955 are the BEST!! I was born that year!!
#19
I just ordered the same one. Since I anticipate more problems in the cold weather, I wanted to inflate the in the garage. Since the 12 v require the car to be running, I wanted a 120v so I could stay in the garage, and this unit seems to fit the build.
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rbrylaw (10-14-2018)
#20
#21
I’m happy I’m not the only one who noticed tire pressure decreases.
a month or so ago I added a couple lbs to bring the tires up to 32, thinking it would be all I need for the coming colder months. Not so.....
yesterday I decided to check just out of curiosity and noticed the pressure is down to 30 again!
2x putting 2+ lbs in the tires.
Keep those tires inflated, I couldn’t imagine if I didn’t check I would be in the upper 20 lbs
a month or so ago I added a couple lbs to bring the tires up to 32, thinking it would be all I need for the coming colder months. Not so.....
yesterday I decided to check just out of curiosity and noticed the pressure is down to 30 again!
2x putting 2+ lbs in the tires.
Keep those tires inflated, I couldn’t imagine if I didn’t check I would be in the upper 20 lbs
#23
MBWorld Fanatic!
Joined: Aug 2004
Posts: 3,447
Likes: 328
From: Tampa, FL
2019 E450 4Matic & 2018 E400 4Matic
You have to love Amazon Prime. I ordered this yesterday and it was just delivered. While I haven't tried to add air to a tire, I must say it's much quieter than I expected it to be. This one seemed to have the most reviews and they were very positive. I like that it's 12v or 120v operated.
#24
You have to love Amazon Prime. I ordered this yesterday and it was just delivered. While I haven't tried to add air to a tire, I must say it's much quieter than I expected it to be. This one seemed to have the most reviews and they were very positive. I like that it's 12v or 120v operated.