Something Seriously Wrong With Car, Need Advise/Help Please
#1
Senior Member
Thread Starter
Something Seriously Wrong With Car, Need Advise/Help Please
As above there is something seriously wrong with the car so I will explain what its doing. Sorry its a long one!
It has 4 new tyres on which are Michelin Pilot Super Sports which where fitted in December & I would have a guess at the car has done 2000 miles if that since they were fitted.
Note this is even on a straight and worse going round bends. AND the Tyre pressure monitor has come on twice recently and I have checked pressures & reset them but it has come on again.
In s+ the traction light is coming on in 1st and 2nd seriously cutting the power even in the dry. It never used to do this, It used to be fine even in the dry
In s+ and sport mode turned on which normally lets a little bit of slip, The car is pulling all over the road like its on ice with 1000bhp in the dry (Seriously grabbing onto the steering wheel fighting to keep it straight). It never used to do this, All it used to do was like normal allow a tiny bit of slip but no wheel spin and the car would drive straight
It feels pretty dangerous to be honest and I always used to have fun abit round the bends but I tried it while it was like this and it was not easy to control at all.
I have also noticed the front end seems like it was gone light & also the car even in comfort in the dry when it sets off in 2nd gear traction kicks in this is on a straight and worse when setting off on a bend.
I have put the right pressure in the tyres as advised in the fuel cap too. They are also standard tyre sizes for the 19" optional wheels.
I hope you can help as I have no clue what could be up with the car and I am normally pretty good with cars. I remember having a little bit of wheel spin on the yoko tyres and the car didnt feel as fast which I put down to needing new tyres and it has been worse like above since.
It was fine for 2.5 years since I have owned it from new (remap since new) till just before symptoms started before the tyre change.
This also maybe relevant, When it was on the yokos I had a blow out on the rear drivers side at only 20 mph and pulled over straight away which I admit was due to myself as I did not check the inside of the rear tyres which had both worn down to the canverse, Part of the tread came away from the tyre and flapped about in the wheel well. (This was over 1 year ago)
Also 2 weeks ago I took the car for a good drive and the tyre pressure monitor came up with check pressure, I was in the middle of no where so parked on a flat surface and all the tyres looked like they were inflated, the car drove fine for 1 hour then 5 minutes from home there was a lot of road noise and the car felt like the tyre was coming off so I pulled over straight away into a petrol station and the rear drivers tyre had gone completely flat! I tried to put air in and it wouldn't hold pressure. I swapped it to the spare and drove home and checked the wheel/tyre. The tyre was ripped which was because it was flat when I drove into the petrol station and there was a cut in part of the tread which may have been the cause for it going flat. I took the wheel to a wheel repair place and they took the tyre off to inspect the wheel which they said looked fine apart from the inner wheel did move slightly on the wheel weight machine but he said that wasn't enough to cause any problems. To be safe I bought a brand new rear wheel and tyre but I still have the problems.
It has 4 new tyres on which are Michelin Pilot Super Sports which where fitted in December & I would have a guess at the car has done 2000 miles if that since they were fitted.
Note this is even on a straight and worse going round bends. AND the Tyre pressure monitor has come on twice recently and I have checked pressures & reset them but it has come on again.
In s+ the traction light is coming on in 1st and 2nd seriously cutting the power even in the dry. It never used to do this, It used to be fine even in the dry
In s+ and sport mode turned on which normally lets a little bit of slip, The car is pulling all over the road like its on ice with 1000bhp in the dry (Seriously grabbing onto the steering wheel fighting to keep it straight). It never used to do this, All it used to do was like normal allow a tiny bit of slip but no wheel spin and the car would drive straight
It feels pretty dangerous to be honest and I always used to have fun abit round the bends but I tried it while it was like this and it was not easy to control at all.
I have also noticed the front end seems like it was gone light & also the car even in comfort in the dry when it sets off in 2nd gear traction kicks in this is on a straight and worse when setting off on a bend.
I have put the right pressure in the tyres as advised in the fuel cap too. They are also standard tyre sizes for the 19" optional wheels.
I hope you can help as I have no clue what could be up with the car and I am normally pretty good with cars. I remember having a little bit of wheel spin on the yoko tyres and the car didnt feel as fast which I put down to needing new tyres and it has been worse like above since.
It was fine for 2.5 years since I have owned it from new (remap since new) till just before symptoms started before the tyre change.
This also maybe relevant, When it was on the yokos I had a blow out on the rear drivers side at only 20 mph and pulled over straight away which I admit was due to myself as I did not check the inside of the rear tyres which had both worn down to the canverse, Part of the tread came away from the tyre and flapped about in the wheel well. (This was over 1 year ago)
Also 2 weeks ago I took the car for a good drive and the tyre pressure monitor came up with check pressure, I was in the middle of no where so parked on a flat surface and all the tyres looked like they were inflated, the car drove fine for 1 hour then 5 minutes from home there was a lot of road noise and the car felt like the tyre was coming off so I pulled over straight away into a petrol station and the rear drivers tyre had gone completely flat! I tried to put air in and it wouldn't hold pressure. I swapped it to the spare and drove home and checked the wheel/tyre. The tyre was ripped which was because it was flat when I drove into the petrol station and there was a cut in part of the tread which may have been the cause for it going flat. I took the wheel to a wheel repair place and they took the tyre off to inspect the wheel which they said looked fine apart from the inner wheel did move slightly on the wheel weight machine but he said that wasn't enough to cause any problems. To be safe I bought a brand new rear wheel and tyre but I still have the problems.
Last edited by Phil_T; 07-12-2019 at 08:55 AM.
#2
Check all of your bushings and suspension connections. Get the car on a lift and use a pry bar to check for play and inspect for missing/broken bolts. It definitely sounds like something is loose. I just had the K-MAC rear bushing kit installed and one of the toe-arms was loose post-install, so I felt some shifting around in both straight lines and cornering. Torqued it to spec and re-aligned....all is well now.
Hope you get it squared away quickly and cheaply!
Hope you get it squared away quickly and cheaply!
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Phil_T (03-25-2016)
#4
Senior Member
Thread Starter
Because car is under warranty they dont want to touch rest of car but they did check all the wheels tyres over.
I dont want to take it straight to Merc just yet as most are pretty useless at solving problems. I plan to take it to an Merc specialist that also does alot of supercharged c63 etc but I wanted to see what people may think it could be.
I dont want to take it straight to Merc just yet as most are pretty useless at solving problems. I plan to take it to an Merc specialist that also does alot of supercharged c63 etc but I wanted to see what people may think it could be.
Last edited by Phil_T; 03-25-2016 at 12:05 PM.
#5
MBWorld Fanatic!
It sounds like you've had a leaking tire for several months. You mentioned that the tire pressure monitor has come on a couple times since the new tires were mounted and that you have "reset" it. Does that mean you just reset the monitor, or that you checked each tire and aired up the low one(s)? If the latter, how many were low and how low were they? Having one or more tires that are very low will certainly impact handling (although usually not to quite the degree you have described).
Based on your recent flat tire experience, it also sounds like you need to begin trusting the tire pressure monitoring system. Having to replace both wheel and tire was a painful and avoidable expense. In the states, the FL cars have a screen that shows the actual pressure in each of the four tires. Is that not the case for the C63 in the UK?
Based on your recent flat tire experience, it also sounds like you need to begin trusting the tire pressure monitoring system. Having to replace both wheel and tire was a painful and avoidable expense. In the states, the FL cars have a screen that shows the actual pressure in each of the four tires. Is that not the case for the C63 in the UK?
#6
MBWorld Fanatic!
A lot of the symptoms you describe could be also related to alignment being way off (in addition to something being loose or disconnected as mentioned above). I would take the car to a shop to check the suspension and alignment - you would probably already have the problem identified and solved......
We are all just speculating with no real data.
We are all just speculating with no real data.
#7
Senior Member
Thread Starter
It sounds like you've had a leaking tire for several months. You mentioned that the tire pressure monitor has come on a couple times since the new tires were mounted and that you have "reset" it. Does that mean you just reset the monitor, or that you checked each tire and aired up the low one(s)? If the latter, how many were low and how low were they? Having one or more tires that are very low will certainly impact handling (although usually not to quite the degree you have described).
Based on your recent flat tire experience, it also sounds like you need to begin trusting the tire pressure monitoring system. Having to replace both wheel and tire was a painful and avoidable expense. In the states, the FL cars have a screen that shows the actual pressure in each of the four tires. Is that not the case for the C63 in the UK?
Based on your recent flat tire experience, it also sounds like you need to begin trusting the tire pressure monitoring system. Having to replace both wheel and tire was a painful and avoidable expense. In the states, the FL cars have a screen that shows the actual pressure in each of the four tires. Is that not the case for the C63 in the UK?
The tyre replacement had to be done as it ripped the sidewall when it was flat rolling into the garage.
A lot of the symptoms you describe could be also related to alignment being way off (in addition to something being loose or disconnected as mentioned above). I would take the car to a shop to check the suspension and alignment - you would probably already have the problem identified and solved......
We are all just speculating with no real data.
We are all just speculating with no real data.
Thanks, I will take it into the dealer for them to look at but like you said something does feel loose as the car feels like its moving even at comfort speed. I first started to notice things felt strange when I took the car out for a good drive in the open road that I use, I took the bend at the same speed I always do and the car felt really light and unsafe going round the bend like it was disconnected from the car (it didn't feel planted & similar to extreme bodyroll on cheap cars)
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#10
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2011 C63 AMG
Age of tires checked? If it's under warranty why not have the dealer check it out? Check wheel nuts torque? Check tire orientation(outside and direction?
#11
I am going to go check my alignment as well. I just took my snow tires off. brand new 4 months ago and the inside of the passenger tire is completely bald for the first 3/4 inches. Sounds a bit like yours....
#12
MBWorld Fanatic!
So you added one new tire and the car feels sloppy now? Check alignment, but i've seen that happen on cars like this that run a lot of camber when you put on a new set. I'd say give it a couple hundred miles to settle in if the alignment is within spec. Or try running the pressures slightly lower than stock.
The only other thing could be an intermittently errant wheel speed sensor, causing false wheel spin signals causing the ESP to overreact to a condition that isn't really happening. If you had a tire come apart and flail around in the wheel well, it could have damaged the wiring or sensor on that wheel, which could cause the issue.
The only other thing could be an intermittently errant wheel speed sensor, causing false wheel spin signals causing the ESP to overreact to a condition that isn't really happening. If you had a tire come apart and flail around in the wheel well, it could have damaged the wiring or sensor on that wheel, which could cause the issue.
#13
Senior Member
Thread Starter
Right guys need help again, they have checked all the car over and can find nothing wrong with it, yet admit the problem with how the car handles is there. They have said that my tyres are not MO spec which they think could be the problem.
They dont make Super sports in MO spec, loads of other people have fitted these to their c63 but had no issues. Also the new c63/c63s has the same times fitted but 265 rears.
They dont make Super sports in MO spec, loads of other people have fitted these to their c63 but had no issues. Also the new c63/c63s has the same times fitted but 265 rears.
#14
Senior Member
Thread Starter
So you added one new tire and the car feels sloppy now? Check alignment, but i've seen that happen on cars like this that run a lot of camber when you put on a new set. I'd say give it a couple hundred miles to settle in if the alignment is within spec. Or try running the pressures slightly lower than stock.
The only other thing could be an intermittently errant wheel speed sensor, causing false wheel spin signals causing the ESP to overreact to a condition that isn't really happening. If you had a tire come apart and flail around in the wheel well, it could have damaged the wiring or sensor on that wheel, which could cause the issue.
The only other thing could be an intermittently errant wheel speed sensor, causing false wheel spin signals causing the ESP to overreact to a condition that isn't really happening. If you had a tire come apart and flail around in the wheel well, it could have damaged the wiring or sensor on that wheel, which could cause the issue.
#17
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Thread Starter
Ive messaged my tyre guy what Merc said to see what he says.
#18
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#20
MBWorld Fanatic!
Agree that lighting up the FRONT tyres is something that a C63 should never do.
If this is happening very often, you may not be driving a C63 . . .
Last edited by zcct04; 04-06-2016 at 11:42 AM.
#21
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#22
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Alpha 9+4.2 GT-R > Caged 997 911 EVT750 > Noble M12 GTO-3R > 09' C63 > Xterra Off-Road
You have been driving the car for 4 months like this?
That is crazy.
I had a very similar situation in my 911 when I switched from PS2s to Ventus which everyone seemed to be happy about. The car was UNDRIVEABLE. I called DDT where I got them from and without hesitation, they said they would take them back. I had put about 300 miles on them, and they still gave me 100% money back and even paid for the freight.
On porsche cars, having VERY stiff sidewalls in the rear tires is a must - otherwise the car will feel extremely unstable.
I am curious to see if that is in fact the problem w/your car, but I have tried numerous types of tires on my C63 and never has it ever felt unsafe/unstable...
Good luck man - I bet it can be frustrating.
That is crazy.
I had a very similar situation in my 911 when I switched from PS2s to Ventus which everyone seemed to be happy about. The car was UNDRIVEABLE. I called DDT where I got them from and without hesitation, they said they would take them back. I had put about 300 miles on them, and they still gave me 100% money back and even paid for the freight.
On porsche cars, having VERY stiff sidewalls in the rear tires is a must - otherwise the car will feel extremely unstable.
I am curious to see if that is in fact the problem w/your car, but I have tried numerous types of tires on my C63 and never has it ever felt unsafe/unstable...
Good luck man - I bet it can be frustrating.
#23
Senior Member
Thread Starter
You have been driving the car for 4 months like this?
That is crazy.
I had a very similar situation in my 911 when I switched from PS2s to Ventus which everyone seemed to be happy about. The car was UNDRIVEABLE. I called DDT where I got them from and without hesitation, they said they would take them back. I had put about 300 miles on them, and they still gave me 100% money back and even paid for the freight.
On porsche cars, having VERY stiff sidewalls in the rear tires is a must - otherwise the car will feel extremely unstable.
I am curious to see if that is in fact the problem w/your car, but I have tried numerous types of tires on my C63 and never has it ever felt unsafe/unstable...
Good luck man - I bet it can be frustrating.
That is crazy.
I had a very similar situation in my 911 when I switched from PS2s to Ventus which everyone seemed to be happy about. The car was UNDRIVEABLE. I called DDT where I got them from and without hesitation, they said they would take them back. I had put about 300 miles on them, and they still gave me 100% money back and even paid for the freight.
On porsche cars, having VERY stiff sidewalls in the rear tires is a must - otherwise the car will feel extremely unstable.
I am curious to see if that is in fact the problem w/your car, but I have tried numerous types of tires on my C63 and never has it ever felt unsafe/unstable...
Good luck man - I bet it can be frustrating.
Mb have been good with me since owning the car from new and their offer to try new tyres without buying them is good of them, I hope it is the problem but will have to wait a week to see.
#24
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Thread Starter
UPDATE Merc was right it was tyres (They have been great with me and one of the head technicians was out with me after we sorted the car just talking about these cars), Michelin PSS do not work on the C63 as the sidewalls are too soft.
I don't know how other people do not notice this on their car who have fitted these, Maybe its different for people who have fitted different wheels and tyre sizes but the 19" standard tyre sizes do not work on this car.
Car now on conti's and has fixed it and sticks to the road like it should, no more tps monitor coming up either.
So another £700 down in new tyres and 4 Michelin PSS tyres with 2000 miles on them and 1mm of tread only come off them sat at home.
I don't know how other people do not notice this on their car who have fitted these, Maybe its different for people who have fitted different wheels and tyre sizes but the 19" standard tyre sizes do not work on this car.
Car now on conti's and has fixed it and sticks to the road like it should, no more tps monitor coming up either.
So another £700 down in new tyres and 4 Michelin PSS tyres with 2000 miles on them and 1mm of tread only come off them sat at home.