c300 4matic tires
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Joined: Aug 2020
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c300 4Matic
c300 4matic tires
Just looking for some advice from someone who has already been through this.
I have a C300 4Matic and am having a dilemma on what to do about tires. I have pirelli run flats. Three are about 1/2 life but one on the rear is pretty much worn out.
Trying to decide if I should replace one tire, both rear, or all four. If I do all four, I will not replace with run flats.
Appreciate any advice.
I have a C300 4Matic and am having a dilemma on what to do about tires. I have pirelli run flats. Three are about 1/2 life but one on the rear is pretty much worn out.
Trying to decide if I should replace one tire, both rear, or all four. If I do all four, I will not replace with run flats.
Appreciate any advice.
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Just looking for some advice from someone who has already been through this.
I have a C300 4Matic and am having a dilemma on what to do about tires. I have pirelli run flats. Three are about 1/2 life but one on the rear is pretty much worn out.
Trying to decide if I should replace one tire, both rear, or all four. If I do all four, I will not replace with run flats.
Appreciate any advice.
I have a C300 4Matic and am having a dilemma on what to do about tires. I have pirelli run flats. Three are about 1/2 life but one on the rear is pretty much worn out.
Trying to decide if I should replace one tire, both rear, or all four. If I do all four, I will not replace with run flats.
Appreciate any advice.
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Joined: May 2018
Posts: 1,432
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From: Illinois
2021 c300 Cab. Arrived 7/28/21 . 24 GLE 450e.
Just looking for some advice from someone who has already been through this.
I have a C300 4Matic and am having a dilemma on what to do about tires. I have pirelli run flats. Three are about 1/2 life but one on the rear is pretty much worn out.
Trying to decide if I should replace one tire, both rear, or all four. If I do all four, I will not replace with run flats.
Appreciate any advice.
I have a C300 4Matic and am having a dilemma on what to do about tires. I have pirelli run flats. Three are about 1/2 life but one on the rear is pretty much worn out.
Trying to decide if I should replace one tire, both rear, or all four. If I do all four, I will not replace with run flats.
Appreciate any advice.
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Joined: Oct 2018
Posts: 1,430
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From: Florida
2018 AMG E43
Great advice from both W205C43PFL & Elvisfan0108.
If you have one tire wearing at a higher rate than the rest, then you have an issue somewhere... unless you are doing one-tire burnouts.
Before you think about replacing tires, I would go to a reputable alignment shop that specializes in alignments (not a department store garage, tire chain or quick-lube joint, IMO), or an MB dealer if you don't care about money. They should be able to determine why you have uneven wear. <-- Fix that.
As W205C43PFL stated (and I believe to be true also), on an AWD system, the rolling outer diameter (OD) should be consistent across all four tires to retain the efficiency of the system. Also keeping the OD close to how the car was shipped from the factory retains the speedometer calibration. So, you can go for wider width tires if you wish, just keep the OD very close to original.
As an example, my car came with the 17" wheel option. I switched to 19" wheels and much wider tires, but the OD of the 19" tires (25.8" OD) are almost exactly the same as the 17" tires (25.9" OD).
This may help you if you are looking to go with a different size from stock: https://tiresize.com/comparison/
If you have one tire wearing at a higher rate than the rest, then you have an issue somewhere... unless you are doing one-tire burnouts.
Before you think about replacing tires, I would go to a reputable alignment shop that specializes in alignments (not a department store garage, tire chain or quick-lube joint, IMO), or an MB dealer if you don't care about money. They should be able to determine why you have uneven wear. <-- Fix that.
As W205C43PFL stated (and I believe to be true also), on an AWD system, the rolling outer diameter (OD) should be consistent across all four tires to retain the efficiency of the system. Also keeping the OD close to how the car was shipped from the factory retains the speedometer calibration. So, you can go for wider width tires if you wish, just keep the OD very close to original.
As an example, my car came with the 17" wheel option. I switched to 19" wheels and much wider tires, but the OD of the 19" tires (25.8" OD) are almost exactly the same as the 17" tires (25.9" OD).
This may help you if you are looking to go with a different size from stock: https://tiresize.com/comparison/
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From: Florida
2018 AMG E43
Agreed. I was speaking more towards running different tire sizes or replacing one or two tires of different tire manufacturers as the rest (some run smaller or larger). Variances will not break anything, as the system is not fragile but great variances are not optimal.
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c300 4Matic
Thanks so much for the very informed comments. My likely solution was to just bite the bullet and get 4 new tires.
But with the comment about possible suspension issues and ordering time required for new tires, I decided to go to a regular service station and have the bad tire removed for inspection. So turnes out both tires were bad, with one much worse. Dangerous, really. It had about 20,000km (15,000 miles) on it (both tires). The better of the rear tires had consistent wear, but the worst tire was badly scalloped. At least 5-6 flat spots. Mechanic thought it might be simply a bad tire (run flat Pirelli) or it might have been badly out of balance.
So, as suggested, while I wait for the new tire delivery, I will get a REAL alignment done and advise mechanic of what I found. I did not think to take pictures of tire.
As suggested numerous times in this forum, this time I will be going with Michelin Pilot Sport 4 AS's. Having a hard time getting them right now, though (Florida).
Thanks again for the responses and obvious concerns.
But with the comment about possible suspension issues and ordering time required for new tires, I decided to go to a regular service station and have the bad tire removed for inspection. So turnes out both tires were bad, with one much worse. Dangerous, really. It had about 20,000km (15,000 miles) on it (both tires). The better of the rear tires had consistent wear, but the worst tire was badly scalloped. At least 5-6 flat spots. Mechanic thought it might be simply a bad tire (run flat Pirelli) or it might have been badly out of balance.
So, as suggested, while I wait for the new tire delivery, I will get a REAL alignment done and advise mechanic of what I found. I did not think to take pictures of tire.
As suggested numerous times in this forum, this time I will be going with Michelin Pilot Sport 4 AS's. Having a hard time getting them right now, though (Florida).
Thanks again for the responses and obvious concerns.
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MBWorld Fanatic!
Joined: Oct 2018
Posts: 1,430
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From: Florida
2018 AMG E43
Thanks so much for the very informed comments. My likely solution was to just bite the bullet and get 4 new tires.
But with the comment about possible suspension issues and ordering time required for new tires, I decided to go to a regular service station and have the bad tire removed for inspection. So turnes out both tires were bad, with one much worse. Dangerous, really. It had about 20,000km (15,000 miles) on it (both tires). The better of the rear tires had consistent wear, but the worst tire was badly scalloped. At least 5-6 flat spots. Mechanic thought it might be simply a bad tire (run flat Pirelli) or it might have been badly out of balance.
So, as suggested, while I wait for the new tire delivery, I will get a REAL alignment done and advise mechanic of what I found. I did not think to take pictures of tire.
As suggested numerous times in this forum, this time I will be going with Michelin Pilot Sport 4 AS's. Having a hard time getting them right now, though (Florida).
Thanks again for the responses and obvious concerns.
But with the comment about possible suspension issues and ordering time required for new tires, I decided to go to a regular service station and have the bad tire removed for inspection. So turnes out both tires were bad, with one much worse. Dangerous, really. It had about 20,000km (15,000 miles) on it (both tires). The better of the rear tires had consistent wear, but the worst tire was badly scalloped. At least 5-6 flat spots. Mechanic thought it might be simply a bad tire (run flat Pirelli) or it might have been badly out of balance.
So, as suggested, while I wait for the new tire delivery, I will get a REAL alignment done and advise mechanic of what I found. I did not think to take pictures of tire.
As suggested numerous times in this forum, this time I will be going with Michelin Pilot Sport 4 AS's. Having a hard time getting them right now, though (Florida).
Thanks again for the responses and obvious concerns.
Yeah, a scalloped or cupped tire is usually a bouncy wheel. A bad balance can do this over time... I would also check the strut/shock on that wheel to be sure that's good.
I've seen quite a few here go through rear tires more often than fronts. I know when I had my first professional alignment done, my rear toe values were out of whack and scrubbing my rear tires. Replacing tires after 15K miles is no fun!
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From: Illinois
2021 c300 Cab. Arrived 7/28/21 . 24 GLE 450e.
Cool, sounds like a great plan. Good luck!
I've seen quite a few here go through rear tires more often than fronts. I know when I had my first professional alignment done, my rear toe values were out of whack and scrubbing my rear tires. Replacing tires after 15K miles is no fun!
I've seen quite a few here go through rear tires more often than fronts. I know when I had my first professional alignment done, my rear toe values were out of whack and scrubbing my rear tires. Replacing tires after 15K miles is no fun!
MBWorld Fanatic!
Joined: May 2018
Posts: 1,432
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From: Illinois
2021 c300 Cab. Arrived 7/28/21 . 24 GLE 450e.
MBWorld Fanatic!
Joined: Oct 2018
Posts: 1,430
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From: Florida
2018 AMG E43
MBWorld Fanatic!
Joined: May 2018
Posts: 1,432
Likes: 300
From: Illinois
2021 c300 Cab. Arrived 7/28/21 . 24 GLE 450e.
**Vehicles with different front and rear tire size fitments: the rear tires will have a 25,000 miles/40,000 kilometers tread life warranty.
Don’t know if they wear faster.
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2018 C 300
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From: Florida
2018 AMG E43
Without having facts, I cannot understand why rear tires would wear at an almost 50% greater rate than front tires would unless there is a problem in the configuration of the vehicle. All else being equal, such as even weight distribution and equal tire pressures causes me to assume the problem is in the camber, caster and/or toe settings. Or in our cars unfortunately, the lack of adjustment of these settings.
I had to buy an aftermarket kit to be able to adjust my rears and get things correct. Since I had the rear alignment corrected and with new tires, I've only put about 4K miles on the car, so time will tell for me.
I had to buy an aftermarket kit to be able to adjust my rears and get things correct. Since I had the rear alignment corrected and with new tires, I've only put about 4K miles on the car, so time will tell for me.
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Joined: Apr 2018
Posts: 52
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2018 C 300
Without having facts, I cannot understand why rear tires would wear at an almost 50% greater rate than front tires would unless there is a problem in the configuration of the vehicle. All else being equal, such as even weight distribution and equal tire pressures causes me to assume the problem is in the camber, caster and/or toe settings. Or in our cars unfortunately, the lack of adjustment of these settings.
I had to buy an aftermarket kit to be able to adjust my rears and get things correct. Since I had the rear alignment corrected and with new tires, I've only put about 4K miles on the car, so time will tell for me.
I had to buy an aftermarket kit to be able to adjust my rears and get things correct. Since I had the rear alignment corrected and with new tires, I've only put about 4K miles on the car, so time will tell for me.
MBWorld Fanatic!
Joined: Oct 2018
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From: Florida
2018 AMG E43
I am a pretty spirited driver and when accelerating hard out of a corner I feel the rear tires lose traction quite often. Whenever there is snow on the roads I always turn traction control off because it annoys me how sensitive it is and won’t let me get the rear end to get sideways so I am guessing that may play a role into it as well.
)
MBWorld Fanatic!
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From: Illinois
2021 c300 Cab. Arrived 7/28/21 . 24 GLE 450e.
Without having facts, I cannot understand why rear tires would wear at an almost 50% greater rate than front tires would unless there is a problem in the configuration of the vehicle. All else being equal, such as even weight distribution and equal tire pressures causes me to assume the problem is in the camber, caster and/or toe settings. Or in our cars unfortunately, the lack of adjustment of these settings.
I had to buy an aftermarket kit to be able to adjust my rears and get things correct. Since I had the rear alignment corrected and with new tires, I've only put about 4K miles on the car, so time will tell for me.
I had to buy an aftermarket kit to be able to adjust my rears and get things correct. Since I had the rear alignment corrected and with new tires, I've only put about 4K miles on the car, so time will tell for me.
