V12V tyre c*ck up! Urgent Help
Discussion
controlz said:
Update:
So, it seems there's something a little more sinister here. Just took the car for another spin, and it turns out that when I turn the traction control off, it makes things 100 x better. I can put my foot down and it is accelerating far more rapidly without any wheelspin. It seems that when the traction control is on, it's dropping the power to the car by at least 50%. The DSC on my MINI seems to just literally drop the revs the second it's activated, but on the V12 it seems to continue revving just with no power (so it gave the perception that the wheels were spinning).
So in conclusion, I have no idea why my traction is doing this when it wasn't with the Corsas? I installed the Winters to be more safe, but then turning off the DSC seems to counter this, so all a little weird! Hope you can help
Like I said before the tyres are too warm, the blocks are moving around and messing with the logic of the DSC. DSC tends to act on the rear axle first and will do so even with the light off (ask me how I know So, it seems there's something a little more sinister here. Just took the car for another spin, and it turns out that when I turn the traction control off, it makes things 100 x better. I can put my foot down and it is accelerating far more rapidly without any wheelspin. It seems that when the traction control is on, it's dropping the power to the car by at least 50%. The DSC on my MINI seems to just literally drop the revs the second it's activated, but on the V12 it seems to continue revving just with no power (so it gave the perception that the wheels were spinning).
So in conclusion, I have no idea why my traction is doing this when it wasn't with the Corsas? I installed the Winters to be more safe, but then turning off the DSC seems to counter this, so all a little weird! Hope you can help
)As you've found switching it off negates that efffect.
Had it been my car I'd have bought a set of used V8V SP2 wheels (same as the V12V winter wheels) and put a set of winter tyres on them. At least then you can swap between the two as the weather dictates
controlz said:
Tyre sizes / circumference are all identical to the original Corsa tyres. Aston Martin fitted these for me.
OK, my final contribution to this thread...If the only thing you have changed is the tyres, the problem is the tyres! If the electronics are confused, it means that the wheel speed sensors are out of whack, which in turn means the tyre ratio/size/circumference front to rear is wrong.....
OR, a wheel speed sensor/wire has been damged..
mikey k said:
Like I said before the tyres are too warm, the blocks are moving around and messing with the logic of the DSC. DSC tends to act on the rear axle first and will do so even with the light off (ask me how I know )
As you've found switching it off negates that efffect.
Had it been my car I'd have bought a set of used V8V SP2 wheels (same as the V12V winter wheels) and put a set of winter tyres on them. At least then you can swap between the two as the weather dictates
Thanks for this. Yes, almost certainly a DSC issue. I didn't realise that DSC can limit power to the wheels without reducing engine revs, so with the engine screaming but the car accelerating at a snails pace, I just assumed the wheels were burning rubber... )As you've found switching it off negates that efffect.
Had it been my car I'd have bought a set of used V8V SP2 wheels (same as the V12V winter wheels) and put a set of winter tyres on them. At least then you can swap between the two as the weather dictates
Is there any solution to this DCS issue, as I said, turning off the DSC doesn't sit particularly well with me when I bought winters to be more safe!
Thanks again.
Jeez, if the engine is screaming then but you are not going anywhere have you thought about regulating the input from your right leg / foot?
DSC on the Aston uses the rear brake(s) to stop the wheel spinning. So now you are reving the tits off the car, not going anywhere, AND wearing out your rear brakes.
Try using less revs and making faster progress.
DSC on the Aston uses the rear brake(s) to stop the wheel spinning. So now you are reving the tits off the car, not going anywhere, AND wearing out your rear brakes.
Try using less revs and making faster progress.
Neil1300r said:
Jeez, if the engine is screaming then but you are not going anywhere have you thought about regulating the input from your right leg / foot?
DSC on the Aston uses the rear brake(s) to stop the wheel spinning. So now you are reving the tits off the car, not going anywhere, AND wearing out your rear brakes.
Try using less revs and making faster progress.
NO you are wrong, the DSC is cutting power to the wheels even with the most moderate of acceleration. All I am saying, is during this acceleration, the revs still increase as if there were no traction issues, but the car is accelerating considerably slower than it should be. (So I can only imagine the DSC is causing limited torque to be delivered to the wheels without touching engine revs) - This is me assuming that's how DSC works.DSC on the Aston uses the rear brake(s) to stop the wheel spinning. So now you are reving the tits off the car, not going anywhere, AND wearing out your rear brakes.
Try using less revs and making faster progress.
controlz said:
NO you are wrong, the DSC is cutting power to the wheels even with the most moderate of acceleration. All I am saying, is during this acceleration, the revs still increase as if there were no traction issues, but the car is accelerating considerably slower than it should be. (So I can only imagine the DSC is causing limited torque to be delivered to the wheels without touching engine revs) - This is me assuming that's how DSC works.
You assume a lot don't youcontrolz said:
Neil1300r said:
Jeez, if the engine is screaming then but you are not going anywhere have you thought about regulating the input from your right leg / foot?
DSC on the Aston uses the rear brake(s) to stop the wheel spinning. So now you are reving the tits off the car, not going anywhere, AND wearing out your rear brakes.
Try using less revs and making faster progress.
NO you are wrong, the DSC is cutting power to the wheels even with the most moderate of acceleration. All I am saying, is during this acceleration, the revs still increase as if there were no traction issues, but the car is accelerating considerably slower than it should be. (So I can only imagine the DSC is causing limited torque to be delivered to the wheels without touching engine revs) - This is me assuming that's how DSC works.DSC on the Aston uses the rear brake(s) to stop the wheel spinning. So now you are reving the tits off the car, not going anywhere, AND wearing out your rear brakes.
Try using less revs and making faster progress.
I killed a set of rear pads in 12k miles with what I thought was light intervention of the DSC (the odd flash of the light) after talking to BR it transpired DSC intervenes long before the light comes on. I then realised I had experienced the effect you are talking about and just put it down to it being a heavy car.
I've since found putting it in track mode (not completely off) is a great compromise
roughrider said:
READ MY POSTS!!
If the engine revs increase, but speed doesn't, you are wrecking your clutch,,,,i give up!! Or you are burning away your rear tyres with the front brakes applied by the DSC.
As Mikey has mentioned, it seems what happening is the DSC is applying the rear brakes causing slow acceleration. As such, the only solution right now is to set the DSC to Track Mode. I wil call Aston Martin the morning to see if there is a solution to the DCS incorrectly responding.If the engine revs increase, but speed doesn't, you are wrecking your clutch,,,,i give up!! Or you are burning away your rear tyres with the front brakes applied by the DSC.
controlz said:
As Mikey has mentioned, it seems what happening is the DSC is applying the rear brakes causing slow acceleration. As such, the only solution right now is to set the DSC to Track Mode. I wil call Aston Martin the morning to see if there is a solution to the DCS incorrectly responding.
I think the DSC is not working correctly because you not only have the wrong tyres on for the current temperature but you are probably using the wrong rims as well. Not sure the Aston technicians are going to be able to help given that you have put non AML approved tyres on the rims that are not approved for any winter tyres. controlz said:
All I am saying, is during this acceleration, the revs still increase as if there were no traction issues, but the car is accelerating considerably slower than it should be.
From your description, if the wheels aren't spinning, it sounds like you've also toasted your clutch.controlz said:
As such, the only solution right now is to set the DSC to Track Mode. I wil call Aston Martin the morning to see if there is a solution to the DCS incorrectly responding.
I think your earlier suggestion is the most sensible. You should give the car back to Aston Martin. And replace it with something with an automatic gearbox and, ideally, less than 100hp.roughrider said:
BravoV8V said:
I think your earlier suggestion is the most sensible. You should give the car back to Aston Martin. And replace it with something with an automatic gearbox and, ideally, less than 100hp.
Please put us all out of our misery and give the car back to the dealer. Don't expect anyone to rush to buy it after all you've told us on here though. Anyone think there should be an age limit on V12 ownership?
An age limit may be extreme, but it is quite clear that the OP has asked plenty of questions on many V12V related topics in a relatively short space of time, and by and large has chosen to ignore practically every piece of advice that has been offered. I don't post here often, but do check in on the forum several times every day. It is a valuable source of information from a very knowledgeable crowd. There in lies the lesson over all of this I guess.
Best Regards everyone
Minglar
Best Regards everyone
Minglar
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