Slight Bend Inside Barrel Of Wheels: To Drive or Not?
MBWorld God!
Joined: Dec 2019
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Don't use these ones as it may ride like a rock and super uncomfortable, use the ones on the fuel cap door but make sure you measure it when tires are cold like parked in the shade for 3 hours or ideally check it next morning.
MBWorld God!
Joined: Dec 2019
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Don't worry 
The good news is now you discovered that the tire pressures are too low, we can fix that.
Post a picture of the pressures shown on the fuel cap door and we can work together to decide what pressure to have in the tires based on your driving style and comfort.
You don't want to use the pressures shown on the driver door sill, you need to get a tire pressure gauge and measure the tire pressures when cold and adjust accordingly next morning.
You want to account for temperature swings (are you anticipating temperatures to drop a few days from now or go up? do you usually drive in the morning when it is cold?) as it also affects tire pressures.
For every 10 degrees increase or decrease, tire pressure will go up or go down by 1psi or so respectively.
Driving will usually increase it by 2-4 psi from experience as friction will heat up the tires, raising the temperatures. So must adjust the pressures when tires are cold.
Run-flats usually ride stiffer than traditional tires but they also is one contributor to cracked and bent rims.
The good news is now you discovered that the tire pressures are too low, we can fix that.Post a picture of the pressures shown on the fuel cap door and we can work together to decide what pressure to have in the tires based on your driving style and comfort.
You don't want to use the pressures shown on the driver door sill, you need to get a tire pressure gauge and measure the tire pressures when cold and adjust accordingly next morning.
You want to account for temperature swings (are you anticipating temperatures to drop a few days from now or go up? do you usually drive in the morning when it is cold?) as it also affects tire pressures.
For every 10 degrees increase or decrease, tire pressure will go up or go down by 1psi or so respectively.
Driving will usually increase it by 2-4 psi from experience as friction will heat up the tires, raising the temperatures. So must adjust the pressures when tires are cold.
Run-flats usually ride stiffer than traditional tires but they also is one contributor to cracked and bent rims.
Thread Starter
MBWorld Fanatic!
Joined: Jun 2007
Posts: 1,022
Likes: 44
From: Los Angeles, CA
2015 C400 Tenorite Gray
Don't worry The good news is now you discovered that the tire pressures are too low, we can fix that.
Post a picture of the pressures shown on the fuel cap door and we can work together to decide what pressure to have in the tires based on your driving style and comfort.
You don't want to use the pressures shown on the driver door sill, you need to get a tire pressure gauge and measure the tire pressures when cold and adjust accordingly next morning.
You want to account for temperature swings (are you anticipating temperatures to drop a few days from now or go up? do you usually drive in the morning when it is cold?) as it also affects tire pressures.
For every 10 degrees increase or decrease, tire pressure will go up or go down by 1psi or so respectively.
Driving will usually increase it by 2-4 psi from experience as friction will heat up the tires, raising the temperatures. So must adjust the pressures when tires are cold.
Run-flats usually ride stiffer than traditional tires but they also is one contributor to cracked and bent rims.
The good news is now you discovered that the tire pressures are too low, we can fix that.Post a picture of the pressures shown on the fuel cap door and we can work together to decide what pressure to have in the tires based on your driving style and comfort.
You don't want to use the pressures shown on the driver door sill, you need to get a tire pressure gauge and measure the tire pressures when cold and adjust accordingly next morning.
You want to account for temperature swings (are you anticipating temperatures to drop a few days from now or go up? do you usually drive in the morning when it is cold?) as it also affects tire pressures.
For every 10 degrees increase or decrease, tire pressure will go up or go down by 1psi or so respectively.
Driving will usually increase it by 2-4 psi from experience as friction will heat up the tires, raising the temperatures. So must adjust the pressures when tires are cold.
Run-flats usually ride stiffer than traditional tires but they also is one contributor to cracked and bent rims.
Fuel Cap
and sticker from driver
MBWorld God!
Joined: Dec 2019
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It’s a little confusing. here’s the info.
Fuel Cap
https://cimg4.ibsrv.net/gimg/www.mbw...feda9d989.jpeg
and sticker from driver
https://cimg7.ibsrv.net/gimg/www.mbw...2ee7e3e64.jpeg
Fuel Cap
https://cimg4.ibsrv.net/gimg/www.mbw...feda9d989.jpeg
and sticker from driver
https://cimg7.ibsrv.net/gimg/www.mbw...2ee7e3e64.jpeg
Although my car doesn't have as many pressures shown being a C 43 but anyways, correction from my previous post I do 37s not 39s (realized the typo) on all four corners tires,
You don't have high load in the rear right and/or passengers?
Normally the fronts and rears are set differently but for my cases I prefer them all at the same amount.
The higher PSI is usually because of the weight of the engine but that is only an issue with the 18s from what I experienced since you have 19s, follow the front lesser psi than rear) and you can add and decrease as you see fit. Although MB usually likes to flip it say for example the rears are higher than the fronts.
According to your public profile, you listed you are from LA and from what I see the temperatures are around 23-26C or 58-61F.
Why don't we start with cold 37 fronts and cold 36 rears : )
It is up to you if you want to get the wheels checked if they are bent or not and then balanced again, I am not sure if it is necessary but if you really think you bent them then get them straightened, again...
Thread Starter
MBWorld Fanatic!
Joined: Jun 2007
Posts: 1,022
Likes: 44
From: Los Angeles, CA
2015 C400 Tenorite Gray
Oh you have that version of the sticker, I see, then it is pretty much the same as the door sill, I am not around my car but for reference these values are what looks like on an AMG C 63 S: https://mbworld.org/forums/attachmen...sure-chart.jpg
Although my car doesn't have as many pressures shown being a C 43 but anyways, correction from my previous post I do 37s not 39s (realized the typo) on all four corners tires,
You don't have high load in the rear right and/or passengers?
Normally the fronts and rears are set differently but for my cases I prefer them all at the same amount.
The higher PSI is usually because of the weight of the engine but that is only an issue with the 18s from what I experienced since you have 19s, follow the front lesser psi than rear) and you can add and decrease as you see fit. Although MB usually likes to flip it say for example the rears are higher than the fronts.
According to your public profile, you listed you are from LA and from what I see the temperatures are around 23-26C or 58-61F.
Why don't we start with cold 37 fronts and cold 36 rears : )
It is up to you if you want to get the wheels checked if they are bent or not and then balanced again, I am not sure if it is necessary but if you really think you bent them then get them straightened, again...
Although my car doesn't have as many pressures shown being a C 43 but anyways, correction from my previous post I do 37s not 39s (realized the typo) on all four corners tires,
You don't have high load in the rear right and/or passengers?
Normally the fronts and rears are set differently but for my cases I prefer them all at the same amount.
The higher PSI is usually because of the weight of the engine but that is only an issue with the 18s from what I experienced since you have 19s, follow the front lesser psi than rear) and you can add and decrease as you see fit. Although MB usually likes to flip it say for example the rears are higher than the fronts.
According to your public profile, you listed you are from LA and from what I see the temperatures are around 23-26C or 58-61F.
Why don't we start with cold 37 fronts and cold 36 rears : )
It is up to you if you want to get the wheels checked if they are bent or not and then balanced again, I am not sure if it is necessary but if you really think you bent them then get them straightened, again...
I’m actually in Memphis and it’s 40. but I’ve been driving on them for about I don’t know 10 or 15 miles.
MBWorld God!
Joined: Dec 2019
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Don't do 45 maximum load when cold, if I recalled correctly, stock oem runflats summers are conti? If so the max inflation pressure might be 50, you risk a blowout if the weather suddenly gets warm and then goes beyond 50. Plus the ride quality will be super trash anyways and you have excess middle wear.
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Thread Starter
MBWorld Fanatic!
Joined: Jun 2007
Posts: 1,022
Likes: 44
From: Los Angeles, CA
2015 C400 Tenorite Gray
Don't do 45 maximum load when cold, if I recalled correctly, stock oem runflats summers are conti? If so the max inflation pressure might be 50, you risk a blowout if the weather suddenly gets warm and then goes beyond 50. Plus the ride quality will be super trash anyways and you have excess middle wear.
MBWorld God!
Joined: Dec 2019
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I took it in to have it re-balanced since it was still in a warranty and they did find the front was a bit off. He set it to 40 all around.. the car feels pretty good. The tire pressure monitor still is slow to show the new values. It’s sort of slowly adjusting. I I guess that’s normal. Thanks for everyone’s input. I appreciate it.
Member
Joined: Jan 2017
Posts: 96
Likes: 17
From: Sydney
W205 C250
My tyre man told me that Mercedes wheels are prone to buckling, mine have been like that since at least the first tyre change. I suppose it’s a matter of degree but its never been noticeable for me whilst driving
MBWorld God!
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The tires are also known to crab in colder weathers. The run-flats are prone to bubbling and other failures. Honestly the best option is to go traditional tires, improve ride quality and lessen the chance of damage to the wheels.
Last edited by W205C43PFL; Nov 30, 2024 at 08:45 AM.
Thread Starter
MBWorld Fanatic!
Joined: Jun 2007
Posts: 1,022
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From: Los Angeles, CA
2015 C400 Tenorite Gray
The shop is part of Monro.
https://locations.monro.com/
MBWorld God!
Joined: Dec 2019
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Yes! It’s nice to get past this. Normally, I go to Discount Tire but they are always busy and behind. It seems to take a long time.
The shop is part of Monro.
https://locations.monro.com/
The shop is part of Monro.
https://locations.monro.com/
Member
Joined: Jan 2017
Posts: 96
Likes: 17
From: Sydney
W205 C250
My first change was to conventional tyres, I think they were Pirelli. It made no difference to the ride or road noise. My car came with 19” wheels, smaller diameter wheels may improve with conventional tyres but it didn’t work out that way for me.
Thread Starter
MBWorld Fanatic!
Joined: Jun 2007
Posts: 1,022
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From: Los Angeles, CA
2015 C400 Tenorite Gray
It was in Memphis. Once I reached Oklahoma on the 40 West, the highway was very bouncy and road conditions worsened significantly through New Mexico, Arizona, and West
I finally made it to Los Angeles but the suspension does not feel quite as firm. I got that highway gallop sound. I do get the clicking when turning but there's a CV joints repair kit. I was hoping to avoid any maintenance right away but at least I have a new car heading into the new year.
MBWorld God!
Joined: Dec 2019
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It was in Memphis. Once I reached Oklahoma on the 40 West, the highway was very bouncy and road conditions worsened significantly through New Mexico, Arizona, and West
I finally made it to Los Angeles but the suspension does not feel quite as firm. I got that highway gallop sound. I do get the clicking when turning but there's a CV joints repair kit. I was hoping to avoid any maintenance right away but at least I have a new car heading into the new year.
I finally made it to Los Angeles but the suspension does not feel quite as firm. I got that highway gallop sound. I do get the clicking when turning but there's a CV joints repair kit. I was hoping to avoid any maintenance right away but at least I have a new car heading into the new year.
Thread Starter
MBWorld Fanatic!
Joined: Jun 2007
Posts: 1,022
Likes: 44
From: Los Angeles, CA
2015 C400 Tenorite Gray
Thread Starter
MBWorld Fanatic!
Joined: Jun 2007
Posts: 1,022
Likes: 44
From: Los Angeles, CA
2015 C400 Tenorite Gray
MBWorld God!
Joined: Dec 2019
Posts: 32,499
Likes: 6,347
Thread Starter
MBWorld Fanatic!
Joined: Jun 2007
Posts: 1,022
Likes: 44
From: Los Angeles, CA
2015 C400 Tenorite Gray
I will document my Mod journey
in another thread. Definitely buying a digital tire gage. Thanks again.
Last edited by Nicholi2007; Dec 4, 2024 at 11:02 AM.
MBWorld God!
Joined: Dec 2019
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I use this one but got it at a discount. I find it accurate enough for my use: https://www.homedepot.com/p/Husky-4-...2500/319284951
Thread Starter
MBWorld Fanatic!
Joined: Jun 2007
Posts: 1,022
Likes: 44
From: Los Angeles, CA
2015 C400 Tenorite Gray
Here is something to get you started. https://mbworld.org/forums/c-class-w...n-project.html
I use this one but got it at a discount. I find it accurate enough for my use: https://www.homedepot.com/p/Husky-4-...2500/319284951
I use this one but got it at a discount. I find it accurate enough for my use: https://www.homedepot.com/p/Husky-4-...2500/319284951
.
MBWorld God!
Joined: Dec 2019
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Pretty cool build. I just got back from wheel balancing number 3. It’s crazy. The guy told me the whole left side was pretty bad. The right side was fine. I definitely hit some rough road on the 40 West going through Arizona & California. I’ve never had this much trouble with wheels. I’m gonna look at AG wheels. I’ve also had pretty good results with Blaque diamond. Thanks.
.
.
Thread Starter
MBWorld Fanatic!
Joined: Jun 2007
Posts: 1,022
Likes: 44
From: Los Angeles, CA
2015 C400 Tenorite Gray
