# 1999 Mercedes-Benz E-Class - is the tire pressure OK?

**URL:** <https://community.cartalk.com/t/1999-mercedes-benz-e-class-is-the-tire-pressure-ok/156401>\
**Category:** Maintenance/Repairs\
**Tags:** mercedes-benz, e-class\
**Created:** [January 12, 2020, 9:31pm UTC](https://community.cartalk.com/t/1999-mercedes-benz-e-class-is-the-tire-pressure-ok/156401 "2020-01-12T21:31:00Z")\
**Posts on this page:** 6\
**Page:** 1

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**Author:** ![MarioDragicevic](https://avatars.discourse-cdn.com/v4/letter/m/ecccb3/32.png) [@MarioDragicevic](https://community.cartalk.com/u/MarioDragicevic)\
**Post date:** [January 12, 2020, 9:31pm UTC](https://community.cartalk.com/t/1999-mercedes-benz-e-class-is-the-tire-pressure-ok/156401/1 "2020-01-12T21:31:00Z")

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The factory recommends air pressure in the tires, front 27psi and back 27 to 33 psi (depends on loading). I replaced all 4 tires 3 weeks ago and BIG O maintained a pressure of 35 psi for all tires. Is this approach wrong?

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**Author:** ![VOLVO-V70](https://avatars.discourse-cdn.com/v4/letter/v/8e8cbc/32.png) [@VOLVO-V70](https://community.cartalk.com/u/VOLVO-V70)\
**Post date:** [January 12, 2020, 9:53pm UTC](https://community.cartalk.com/t/1999-mercedes-benz-e-class-is-the-tire-pressure-ok/156401/2 "2020-01-12T21:53:39Z")

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If you go by the plaque on the drivers door how can you go wrong. Why are you not asking Big o tire why they can’t read the plaque ? Any time I use a tire place for air they always look at the plaque.

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**Author:** ![lion9car](https://avatars.discourse-cdn.com/v4/letter/l/59ef9b/32.png) [@lion9car](https://community.cartalk.com/u/lion9car)\
**Post date:** [January 13, 2020, 1:58pm UTC](https://community.cartalk.com/t/1999-mercedes-benz-e-class-is-the-tire-pressure-ok/156401/3 "2020-01-13T13:58:59Z")

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Assuming the new tires are the same size, the recommended pressure is still the same.

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**Author:** ![tcmichnorth](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/tcmichnorth/32/25126_2.png) [@tcmichnorth](https://community.cartalk.com/u/tcmichnorth)\
**Post date:** [January 13, 2020, 2:04pm UTC](https://community.cartalk.com/t/1999-mercedes-benz-e-class-is-the-tire-pressure-ok/156401/4 "2020-01-13T14:04:05Z")

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Unfortunately not all of them do. I would assume the tech in this instance puts 35 PSI on almost every tire he services.

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**Author:** ![circuitsmith](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/circuitsmith/32/40376_2.png) [@circuitsmith](https://community.cartalk.com/u/circuitsmith)\
**Post date:** [January 13, 2020, 3:03pm UTC](https://community.cartalk.com/t/1999-mercedes-benz-e-class-is-the-tire-pressure-ok/156401/5 "2020-01-13T15:03:22Z")

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Better to have them a little high than low.  
However I agree 8lb over is a bit much.  
Many techs assume the customer won’t be checking the pressure again for a long time.  
And the majority don’t.  
Also there’s temperature to consider.  
The tires were installed in a garage and it’s winter, so colder outside.  
Tire pressure varies 1psi per ~12deg F.

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**Author:** ![shanonia](https://avatars.discourse-cdn.com/v4/letter/s/9de053/32.png) [@shanonia](https://community.cartalk.com/u/shanonia)\
**Post date:** [January 13, 2020, 3:57pm UTC](https://community.cartalk.com/t/1999-mercedes-benz-e-class-is-the-tire-pressure-ok/156401/6 "2020-01-13T15:57:22Z")

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> [@MarioDragicevic](#):
>
> Is this approach wrong?

It is wrong. Correct pressure for your car (assuming original wheels and tire size) is on a sticker - usually in the driver’s door jamb.