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Cadillac ATS Technical Discussion Forum Discussion, My car is dangerous to drive: Tires or car? in Cadillac ATS Discussion Forums; Originally Posted by bravnik It's probably the runflats that's the issue. They are known to handle like crap and ride ...
  1. #16
    M5eater's Avatar
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    Re: My car is dangerous to drive: Tires or car?

    Quote Originally Posted by bravnik View Post
    It's probably the runflats that's the issue. They are known to handle like crap and ride rough. I can't wait to get rid of mine.
    While they are generally horrible, I found myself taking descending gradient off ramps at higher than posted speeds in a 3.6, in the rain, without issue.

    The OP has presented a very general and vague situation of the rear end stepping out.

    If you're going 20mph over the limit through a turn in pouring rain with your foot on the gas, yeah, you're probably going to get a bit tail happy.

    If however you're doing 5 under there's something not right there, you really shouldn't have an issue, even with the crap-tastic run flats. In such a case, I would say check tire pressure, tread depth and TCS operation @ the dealer.

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    jamboarder is offline Cadillac Owners Member
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    Re: My car is dangerous to drive: Tires or car?

    No run-flats aren't the issue. This is getting preposterous.

    Quote Originally Posted by M5eater View Post
    While they are generally horrible, I found myself taking descending gradient off ramps at higher than posted speeds in a 3.6, in the rain, without issue.

    The OP has presented a very general and vague situation of the rear end stepping out.
    That's the problem here isn't it: Vague assertions about the car doing something you wouldn't expect in any production vehicle from the last 40 years. The idea that the ATS's rear end is sliding out when cornering at normal speeds in wet conditions is, I'm sorry, ridiculous. There are no normal conditions under which that occurs. None. No one is experiencing this. No one.

    Hey hey, my car is dangerous to drive: the right rear wheel falls off when I drive over a speed bump at normal speeds. Anyone else experiencing that?

    What's worth discussing here? It ain't normal. There is no ATS "wet road-rear end slippage problem" for Cadillac to take note of and I'll happily eat my words if there is.
    Rozay619 and Rozay619 like this.

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    Quote Originally Posted by flycaster

    As long as this wet road-rear end slippage problem is duly noted by Cadillac. I'll be into the dealer next week and will have this checked out.
    Problem??? Are you for real? SLOWDOWN
    Problem solved. Cars aren't dangerous, people are.

  4. #19
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    Re: My car is dangerous to drive: Tires or car?

    Poor OP...

  5. #20
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    Re: My car is dangerous to drive: Tires or car?

    Quote Originally Posted by M5eater View Post
    ...If you're going 20mph over the limit through a turn in pouring rain with your foot on the gas, yeah, you're probably going to get a bit tail happy.

    If however you're doing 5 under there's something not right there, you really shouldn't have an issue, even with the crap-tastic run flats. In such a case, I would say check tire pressure, tread depth and TCS operation @ the dealer.
    Although I don't believe that I presented a "general and vague situation," you are right, I shouldn't have any issues. Slipping occurs on turns when raining, and when the road just is wet. I don't take intersection turns at higher than posted speeds (of course highway on ramp speeds are a different matter). Tire pressure should be fine even though I've adjusted the psi to 37psi rears and 35psi fronts. Nonetheless, in the interest of fairness, the next time the roads are wet I will run two tests: 1) Take the turn at a constant speed, without slightly (lightly) accelerating out of it, 2) Drop the psi's to 35/32 rear/front and then try the turns on a wet road at constant speed and then with slight acceleration.

    I have felt this type of slipping with my beloved 325 (traction control on), but not on my Z4??? Could be the tires (probably not as others haven't report this issue and my Z4 had different tires than the 325). It could be the way I take the turns and we'll soon find out...when the next rain comes, which should be in the next few days.

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    Quote Originally Posted by jamboarder View Post
    No run-flats aren't the issue. This is getting preposterous.



    That's the problem here isn't it: Vague assertions about the car doing something you wouldn't expect in any production vehicle from the last 40 years. The idea that the ATS's rear end is sliding out when cornering at normal speeds in wet conditions is, I'm sorry, ridiculous. There are no normal conditions under which that occurs. None. No one is experiencing this. No one.

    Hey hey, my car is dangerous to drive: the right rear wheel falls off when I drive over a speed bump at normal speeds. Anyone else experiencing that?

    What's worth discussing here? It ain't normal. There is no ATS "wet road-rear end slippage problem" for Cadillac to take note of and I'll happily eat my words if there is.
    First, let me suggest that if your tire falls off, maybe a little crazy glue would help the next time you go over a speed bump.

    Anyway, guys, I have no idea why you think I'm being vague with my description of this issue? I'm not a speeder. I don't barrel through turns. I know how it feels when a car slips and when it holds the road. The car hugs the road when the road is dry, but rear end slips when wet (been duly noted many times). As stated before, if I don't get to the dealer first before the next rain, I will try going through the intersection turns without lightly accelerating coming out of the turn (viz., take the turn at constant speed).

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    Re: My car is dangerous to drive: Tires or car?

    Quote Originally Posted by flycaster View Post
    I have felt this type of slipping with my beloved 325(traction control on)
    Sooo this happens with your 325 too huh? Traction control on too huh? Fascinating. Yeah.... See, this doesn't even happen with a Camry, or a 1981 Isuzu Impulse.

    Unless the 2013 ATS shares a "dangerous" safety flaw with the BMW 325 that has somehow gone unnoticed by the driving public and regulators for years, there are only two reasonable conclusions:
    1. There is nothing "normal" about your driving, OR
    2. What you think is the rear end sliding out isn't the rear end sliding out

  7. #22
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    Re: My car is dangerous to drive: Tires or car?

    either there is something horribly broken in the suspension or differential on your ATS.
    or, you are driving beyong the cars's or drivers capabilities for the given road conditions.

    option one, take it to your dealership ASAP.
    option two, adjust your driving style.


    J.

  8. #23
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    Re: My car is dangerous to drive: Tires or car?

    Quote Originally Posted by jamboarder View Post
    1. There is nothing "normal" about your driving, OR
    2. What you think is the rear end sliding out isn't the rear end sliding out
    1. Nothing wrong with my driving.
    2. Well, let's say I'm making a left-hand turn and the rear end slips out to the right while the front tracks as it should, AND I'm well within the speed limit for this turn...What would you call it?

    EDIT: And to everyone else who is trying to help, but keeps referring to my "poor" driving, how about reading the posts as see that what I am doing (for example, my #2 response above tells it like it is). I have described my driving action during turns many, many times. Also, I have previously stated several times that I will be going to the dealership. Maybe some of you guys need a little remedial reading course???

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    What car do you have?

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    Re: My car is dangerous to drive: Tires or car?

    When a mechanic shakes his or her head at your tires and says they have been vulcanized, this is not a bogus use of a tire term. What your mechanic sees is the effects of heat on your tires, which can prematurely age them and render them useless over time. Vulcanized tires are hard and inflexible, which is the very thing you don't want when it comes to wet pavement. A vulcanized tire can lose its grip on the pavement, potentially sending you out of control until you can get some traction back. Vulcanized tires need to be replaced. If your mechanic uses the dread word in reference to your tires, it's time to start checking tire prices--it's not safe to wait.

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    Re: My car is dangerous to drive: Tires or car?

    Devulcanized?

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    Re: My car is dangerous to drive: Tires or car?

    320x240.jpg
    Quote Originally Posted by zr1mom View Post
    they have been vulcanized
    http://www.startrek.com/legacy_media...lo/320x240.jpg
    Rozay619 and Rozay619 like this.

  13. #28
    cdp
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    Re: My car is dangerous to drive: Tires or car?

    For what it's worth, I had the rear end step out a bit on me recently. Had the family in the car and got a "whoa!" from everyone in the car. It was raining pretty hard and tires were cold and I got on the gas a little from a stop as I was turning right to get on a busy feeder road. Nothing huge, but haven't experienced anything so dramatic with my other rear wheel drive cars (including a Z4). However, this is the first automatic I've owned in nearly 30 years, so I think I just accelerated too abruptly (with manual transmission unless I dump the clutch I don't get the same abrupt power delivery). I just chalked it up to heavy rain, cold tires and heavy right foot. However, I think that stability control does give you a little more leeway on this car than most others. I think that's actually a good thing. Was easy enough to catch it (think the stability control did most of the work) and don't think we were ever in danger. Was actually kind of fun. However, I don't think the summer performance tires are the greatest in heavy rain. Just have to keep that in mind.

  14. #29
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    Re: My car is dangerous to drive: Tires or car?

    Nice copy and paste. Hope you didn't believe this article.

    Quote Originally Posted by zr1mom View Post
    When a mechanic shakes his or her head at your tires and says they have been vulcanized, this is not a bogus use of a tire term.

  15. #30
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    Re: My car is dangerous to drive: Tires or car?

    Quote Originally Posted by ewired View Post
    What car do you have?
    Traded a 2002 BMW 325i in for the ATS turbo Lux. Also have a 2005 BMW Z4 since 2005.

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    Quote Originally Posted by zr1mom View Post
    When a mechanic shakes his or her head at your tires and says they have been vulcanized, this is not a bogus use of a tire term. What your mechanic sees is the effects of heat on your tires, which can prematurely age them and render them useless over time. Vulcanized tires are hard and inflexible, which is the very thing you don't want when it comes to wet pavement. A vulcanized tire can lose its grip on the pavement, potentially sending you out of control until you can get some traction back. Vulcanized tires need to be replaced. If your mechanic uses the dread word in reference to your tires, it's time to start checking tire prices--it's not safe to wait.
    zr1mom, are you saying the Michelin Primacy M/S tires are vulcanized? And, correct me if I am wrong, but are all tires vulcanized? Isn't that part of the manufacturing process?

    ----------

    Quote Originally Posted by cdp View Post
    For what it's worth, I had the rear end step out a bit on me recently. Had the family in the car and got a "whoa!" from everyone in the car. It was raining pretty hard and tires were cold and I got on the gas a little from a stop as I was turning right to get on a busy feeder road. Nothing huge, but haven't experienced anything so dramatic with my other rear wheel drive cars (including a Z4). However, this is the first automatic I've owned in nearly 30 years, so I think I just accelerated too abruptly (with manual transmission unless I dump the clutch I don't get the same abrupt power delivery). I just chalked it up to heavy rain, cold tires and heavy right foot. However, I think that stability control does give you a little more leeway on this car than most others. I think that's actually a good thing. Was easy enough to catch it (think the stability control did most of the work) and don't think we were ever in danger. Was actually kind of fun. However, I don't think the summer performance tires are the greatest in heavy rain. Just have to keep that in mind.
    You could have been hydroplaning with all that water on the road? I my case, the roads were merely damp/wet. Haven't had the opportunity to take the turns on a wet road at a constant speed...which I'm sure probably will make a difference. As you have had the same slipping experience as I have had, and you also have a Z4 (which holds on a wet road as does mine), it could be that as the ATS appears to slide for us, but not for others, because of our past driving experience with the BMWs???

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