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Feeling the road throug the gas pedal

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Old Oct 17, 2017 | 07:48 PM
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2017 Benz C63S Coupe
Feeling the road throug the gas pedal
Hey guys/gals

I have 2017 C63s coupe, lowered via K.W HAS kit with 20” ADV1 wheels with Michelin pilot super sports all round
Up here in Toronto, Canada weather has been getting cooler. The past week I’ve noticed i’m feeling the road/bumps more so via the gas pedal.

Any thoughts ?

Its at all speeds...

Anybody else get this ?

Thanks

Marco
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Old Oct 17, 2017 | 10:45 PM
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2017 Benz C63S Coupe
Checked my tire pressure, all were around 39-41psi, must be due to the change of temperature here in Toronto.... Put the pressure back to factory specs...

All good now....

Marco
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Old Oct 17, 2017 | 11:09 PM
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2020 GLE 53 AMG
Originally Posted by 1 SIC DR
Checked my tire pressure, all were around 39-41psi, must be due to the change of temperature here in Toronto.... Put the pressure back to factory specs...

All good now....

Marco
39-41 cold is too high.

Should be Front 38 and Rear 33 cold.
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Old Oct 17, 2017 | 11:22 PM
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2017 Benz C63S Coupe
Door Jam factory specs on my car are front 46 psi, rear 48 psi...

.

Originally Posted by KJ
39-41 cold is too high.

Should be Front 38 and Rear 33 cold.
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Old Oct 18, 2017 | 02:47 AM
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2017 C43 AMG Saloon
Originally Posted by 1 SIC DR
Door Jam factory specs on my car are front 46 psi, rear 48 psi...

.
You're supposed to use the gas/petrol tank cover specs.
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Old Oct 18, 2017 | 01:26 PM
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2020 GLE 53 AMG
Originally Posted by 1 SIC DR
Door Jam factory specs on my car are front 46 psi, rear 48 psi...

.
You have to go by what's on the gas cap cover.

Those pressures you listed are for a fully loaded car (5 people + luggage) cruising at 280+ km/h
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Old Oct 18, 2017 | 01:35 PM
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2016 C63S Sedan
Originally Posted by KJ
You have to go by what's on the gas cap cover.

Those pressures you listed are for a fully loaded car (5 people + luggage) cruising at 280+ km/h
This is correct and the EPA mandates it on the door jam as it gives better mileage and the dealer will use that unless you tell them to leave the pressure alone.
Use the proper numbers on the gas door with correct tire, speed and load.
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Old Oct 18, 2017 | 01:52 PM
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This was discussed on previous thread as i did a search....

https://mbworld.org/forums/c63-c63s-...helin-pss.html

I went with 44psi in the front and 39-40 in rear.....

Thanks for the help guys....

Marco
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Old Oct 18, 2017 | 02:19 PM
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2017 AMG c63s
Originally Posted by 1 SIC DR
This was discussed on previous thread as i did a search....

https://mbworld.org/forums/c63-c63s-...helin-pss.html

I went with 44psi in the front and 39-40 in rear.....

Thanks for the help guys....

Marco
I run 38 front and 36 rear. I would think that the higher the psi the bumpier the road would feel. When I first got the car the dealer had all 4 wheels at 42 psi and I feel the car rides much nicer at my current psi.
Also I am in California and the coldest weather I have driven in has been 60 degrees fahrenheit.
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Old Oct 18, 2017 | 04:33 PM
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Car feels normal at those psi.
Note: I also have less sidewall with my ADV1 wheels, which are 255/30/20 in the front....
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Old Oct 19, 2017 | 03:39 AM
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I'm running 38 r 33 f on my 285/35 r and 265/35 f. so far so good
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