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Discussion Starter · #1 ·
One year ago my rotors had to be replaced because of severe vibration during the winter time, no less. Fiat Chrysler at the time told me it was because I was not driving it enough and the rotors warped on me during the cold weather, which was utter nonsense, I drove the car everyday. They eventually replaced the rotors but I had to jump through hoops to get it done. I now have the same problem and yes I do drive hard within the limits of the car, after all a QF is a performance car and the components should be up to par. I'm now waiting for their answer after more than a week has already gone by. They are under warranty for one year and a certain mileage threshold, . . . so far I'm very disappointed in the company looking for excuses to not honour their warranty, . . . do I need to replace the rotors every year?
 

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More likely you were getting corrosion deposits driving in snow then letting car sit. Try sone hard 80mph braking and your rotors may very well be fine
 

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Discussion Starter · #5 ·
More likely you were getting corrosion deposits driving in snow then letting car sit. Try sone hard 80mph braking and your rotors may very well be fine
I drove the car everyday so I don't think there was any corrosion deposits, Thank You for your reply
 

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I drove the car everyday so I don't think there was any corrosion deposits, Thank You for your reply
I had similar situation with warped rotors. I ended up changing the complete set of rotors with Brembo and the complete set of pads from EBC yelowstuff. better breaking feeling and better breaking distance, more confidence. 20K km since and no problems so far! from my knowledge the original pads are building deposits on the rotors.
 

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If you genuinely don't understand that it is possible to brake in such a way that it can warp the rotors, then you don't really understand enough about cars to determine if you brake "normally"or not. Especially in a high performance car. Lots of people overestimate what that means, even in Bugattis.

Sorry, just how that is. You can say you brake how you normally do, OK, is that how most people normally brake, or how a person should brake? That is what matters and requires more information.

If you want to learn about braking and how driver input as well as installation and other factor effect rotors wear, here is a link to a couple well written articles that describes some of the many ways a brake rotor can warp. Otherwise, can't help, sorry.

The first article is the better written, but the second is less technical. Neither are the last word and placed as a way to begin learning on the subject not as something that tells you all there is to know.


 

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I’d think that for a street driven quad it’s more likely that deposits are on the rotors rather than warped rotors. Is your car parked inside? You say it is driven regularly so corrosion from sitting not as likely as brakes not being hot enough and applied with sufficient pressure. Is this impacting one rotor or a pair? That might suggest that the brakes should be checked to ensure proper function of the electronic system. I’d definitely take some hard braking runs to see if it clears up. having an indy shop check the runout, turn the rotors lightly and clean the pads if Alfa doesn’t cover replacement would be way cheaper since the quad parts are super expensive.
 
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Drive hard on cold rotors...they can warp on the street in 1 stop. Given various environmental and other factors.

But it could be deposits (however if he really does drive everyday and drives in a way that uses the Quad's power I think deposits would be weird), it could be several things but only a couple would be covered by warranty, which is the real issue.

Is it a problem with the car or the way it is driven?

If you really want to rule out problems with the car/dealer, take it to an independent tire shop and have them check the lugs. Make sure they aren't torqued too heavy which will cause this problem.
 

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One year ago my rotors had to be replaced because of severe vibration during the winter time, no less. Fiat Chrysler at the time told me it was because I was not driving it enough and the rotors warped on me during the cold weather, which was utter nonsense, I drove the car everyday. They eventually replaced the rotors but I had to jump through hoops to get it done. I now have the same problem and yes I do drive hard within the limits of the car, after all a QF is a performance car and the components should be up to par. I'm now waiting for their answer after more than a week has already gone by. They are under warranty for one year and a certain mileage threshold, . . . so far I'm very disappointed in the company looking for excuses to not honour their warranty, . . . do I need to replace the rotors every year?
Front or rear?
 

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Discussion Starter · #12 ·
If you genuinely don't understand that it is possible to brake in such a way that it can warp the rotors, then you don't really understand enough about cars to determine if you brake "normally"or not. Especially in a high performance car. Lots of people overestimate what that means, even in Bugattis.

Sorry, just how that is. You can say you brake how you normally do, OK, is that how most people normally brake, or how a person should brake? That is what matters and requires more information.

If you want to learn about braking and how driver input as well as installation and other factor effect rotors wear, here is a link to a couple well written articles that describes some of the many ways a brake rotor can warp. Otherwise, can't help, sorry.

The first article is the better written, but the second is less technical. Neither are the last word and placed as a way to begin learning on the subject not as something that tells you all there is to know.


Pleeeeeeeeese, . . . .
I've had many high performance autos in my life, . . . a true high performance quality vehicle is built with the expectation that it will be driven hard, and therefore if the manufacturer is "honest", the major components will be of a quality to prevent such a thing, . . . I've had several Porsches as an example and I've never had warped rotors let alone two instances of warped rotors in one year. You sound like you work for Alfa Romeo. If the expectation is that I should drive like an old woman then I'll buy myself a minivan
 

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Discussion Starter · #13 ·
Drive hard on cold rotors...they can warp on the street in 1 stop. Given various environmental and other factors.

But it could be deposits (however if he really does drive everyday and drives in a way that uses the Quad's power I think deposits would be weird), it could be several things but only a couple would be covered by warranty, which is the real issue.

Is it a problem with the car or the way it is driven?

If you really want to rule out problems with the car/dealer, take it to an independent tire shop and have them check the lugs. Make sure they aren't torqued too heavy which will cause this problem.
I drive the car everyday, there are no deposits believe me. Any Stelvio quad owner will tell you that the brakes are very "grabby" and as such, it is possible (in my opinion), that maybe the braking system is digging into the disks with such force to cause damage. It may also be that the quality of the material used for the disks is subpar or any combination among other things, . . . I thank you for your reply
 

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Lots of us have owned Porsches here sir, myself included. Not impressive or unique to this crowd.

Have the lug nuts been over torqued?

You have been offered option that could help, rather than try them you simply rule them out.

If you want help you need to start listening and experimenting, otherwise....have fun being the expert.
 

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I'm a quad owner, since they came out, and I have no idea how you could have warped one set of discs, let alone two, in street use. Edit- unless maybe you drive really fast in n or a mode, so the traction control is always engaging.
If you were tracking, yeah wearing them or the pads, or if you didn't allow them to cool properly after hot laps .... but I dont think you warped them in one cold stop. Or even a bunch.
Plenty of tracking brake threads on guilia forum, maybe you can find some insight reading there.
And yes, people who spend time at the track often select different pads and/or rotors, depending on their use.
 

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Pleeeeeeeeese, . . . .
I've had many high performance autos in my life, . . . a true high performance quality vehicle is built with the expectation that it will be driven hard, and therefore if the manufacturer is "honest", the major components will be of a quality to prevent such a thing, . . . I've had several Porsches as an example and I've never had warped rotors let alone two instances of warped rotors in one year. You sound like you work for Alfa Romeo. If the expectation is that I should drive like an old woman then I'll buy myself a minivan
Welcome to the Stelvio forum, where if you have any issues with the reliability of our [notoriously unreliable] cars, it's either your fault or you're a troll paid by a competing car manufacturer. Good luck!
 

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Ok Lost, assume deposits are not the cause either given what he has written. (Though they could be actually)

What could cause 2 sets of warped rotors?

You really think he got 2 sets of defective rotors? In a row?

Or you agree the Quad has cheap brakes? For street use?

There are only so many options. 30+ years experience with brakes...either he has deposits, warpage due to driver input, cheap brakes, or the car has had a repeat problem with installation and/or parts defects.

Only so many options.

There is no argument the brakes are "grabby", they are grabby - in part - because Alfa spec'de soft metal for the rotors...soft metal warps easy.

Just because lots of people track a car and don't have problems with warpage doesn't mean another driver won't have that problem. Too many variables, not just the driver but humidity, ambient temps, and a host of other factors as I'm sure you know. This isn't just for the possibility of warpage, also for deposits. Just driving a vehicle everyday is not enough to guarantee deposits don't form causing a vibration in the brakes. Only reason I haven't argued that point ore is..even for me there is only so much arguing that can be done.

It isn't about blame or calling anyone, thing, object, place or whatever else a name or insult. It's about finding the cause of a problem and making it go away.

Rulling out possibilities before actually disproven through testing and measurement doesn't do that. In my experience it extends the amount of time before the problem is solved.

Go get the lug nuts torque tested. If they are over torqued, that is the problem. If they aren't..well....there are options to look at and things to do. Change the brakes, change the car, change how you drive, all can have rewards, but asking for help then telling people who try to offer suggestions they are wrong before actually attempting the fix, that really doesn't seem productive.

Not trying to do anything other than solve a problem, if the solution is offensive...well...
 

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"Only so much arguing" - you always got some more in you.
I seriously doubt he could have warped two sets. I dont have any faith in the dealer diagnosis.
Someone early on (maybe you) suggested going to a different shop/brake specialist.
Yes, from a design point of view I prefer a harder rotor/soft pad combination, because replacing worn pads is cheaper than worn rotors. Not because the rotors warp. But these don't seem to be extreme like 1995ish bmw. In any event that is a simple solution to brake wear that many who track have pursued.
 

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Al's first tracking with sq.
If I remember correctly, he ordered standard brakes because the cc on his gq were too expensive to replace. He subsequently added the bigger iron girodiscs and larger calipers to the sq, but this was (unless i missed something) stock brakes. His complaint on this thread, wearing out pads after 3 days. Thats with bigger tires than stock.
So no, I dont see warping in street use as an issue.
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I'm not arguing what Call me Al Did.

My point is just because one person - who is obviously very skilled at what he is doing - didn't warp them on a track doesn't mean it couldn't have happened on the street with a different driver.

I would also doubt he warped 2 sets.

Thing is, would doubt he got 2 defects too.

Would also doubt deposit build-up happened twice, given the car being driven daily.

And doubt the quality of the brakes being an issue.

The chances of having the lug nuts over torqued twice is slim too....so....

So what is left?

Please illuminate this problem.

You don't like arguing, I don't like not solving a problem. As of yet the only solution to this problem...is that the Quad is under braked for the street, which seems impossible as if the car were under braked it would warp rotors easy....be a problem with lots of cars, perform even worse at the track then it already does. So logically that doesn't make sense, but whatever.

So...since I don't own a quad I'll go with what you say. Not trying to argue, trying to understand something that everything I know professionally says is wrong. I know the brakes aren't cheap and don't warp unless abused, guess I'm wrong though. Sorry.
 
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