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[ANSWERED] Grand Sport / Z06 Wheels Bending

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[ANSWERED] Grand Sport / Z06 Wheels Bending

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Old 10-28-2017, 07:55 PM
  #41  
c7fasteddie
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Originally Posted by rikhek View Post
i think it sucks that the camaro 1le and cts-v get forged wheels but the z06 does not...
you should of got the stingray z, much better wheels, made in tuwacaa
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Old 10-30-2017, 11:12 PM
  #42  
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I've never bent a wheel on any car (except once when I hit something). I quickly bent one on my grand sport and then my dealer cracked one test driving it after an alignment

A previous poster said it best: Your field data doesn't indicate a problem because it's not being recorded as warranty claims.

Last edited by village idiot; 10-30-2017 at 11:16 PM.
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Old 11-17-2017, 05:47 AM
  #43  
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Same double talk BS from GM...
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Old 11-17-2017, 12:13 PM
  #44  
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We put over 200k miles total on a C5 and two C6's, all Z51. Hit a lot of nasty stuff but never bent a wheel.

At less than 5k miles on our 2017 Z51, suspension in Tour, I hit a protruding manhole and bent a rear wheel so badly it needs replacement.

Note to Tadge: The dealer laughed at me when I suggested a warranty replacement, so here's yet another one that won't show as a problem (for you).
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Old 11-17-2017, 01:03 PM
  #45  
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Originally Posted by spinkick View Post
The speedline wheels are definitely made in Mexico. The question is, do they meet the quality asked for by gm? The secondary question is, is the quality level requested by the vendor high enough?

Again, i know they are breaking a significant amount of wheels at the proving grounds testing new models and are looking for new vendors right now..
Maybe so, and that would mean one or two things: the wheels are not made properly, or someone is not really doing sporadic quality checks to see if they are made to GM-specified criteria. This assumes that the specs are sufficient for the wheels, road surfaces, tires, cars, etc.

Another way to look at this, which wasn't mentioned in the Chief's response is, just exactly how many wheels are cracking, bending, breaking, etc. AS A PERCENTAGE of wheels on the road? And what percentage would qualify to GM as "statistically significant"?

That might even take into account (which probably is not being done now) all reports beyond the dealers' actually replacing damaged wheels, such as Forums, Facebook, and other social media.

Round numbers: '14-'18---120,000 Corvettes sold x 4 wheels = 480,000 wheels.

Are there 10% complaints for all cars sold (48,000 wheels, affecting at least 12,000 Corvettes---very simplistic, I know)? And, is that the number that results in, "We, at GM, are now VERY aware and concerned, due to the numbers/percentage of damaged wheels."

Or, is it less than that number, both in incidents, and total number of problem Corvettes?

Whatever the answers, the real question now is, at what number does this become important to GM, and Corvette? It's certainly important already to those who have suffered one or more wheel failures.

I believe this might be called a "follow-on" question to the original.
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Old 11-17-2017, 07:25 PM
  #46  
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10% would be a catastrophic failure and no-doubt recall.

I'm not sure what the number is, but I bet its way higher than what GM thinks it is because most people probably treat it like a flat tire- go somewhere else and get it fixed or replaced. It's not a warranty thing.

Last edited by village idiot; 11-17-2017 at 07:26 PM.
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Old 11-18-2017, 09:14 AM
  #47  
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Seriously surprised and disappointed the Z06 stock wheels are not forged....I just assumed they were.

I have a super slow leak in a rear tire and I think its a rim issue as I inspected the tire.

Thank goodness I purchased the rim and tire warranty from Kerbeck.

Last edited by Hemi Dave; 11-18-2017 at 10:24 AM.
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Old 11-18-2017, 10:17 AM
  #48  
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Wow Guys--this is interesting on the Wheel issues. I got rid of my C4 a while ago and was looking to really Step up. But Crap wheels bending and cracking man. I thought the overheating issue was bad on a 90k car supposed to be track ready. But now the issue like this where folks are saying not to use the "Track Mode" option for fear of wheel failure. I know the Forums usually concentrate issues because its a place to report the issues and see if anyone else is having the same problem but at least for me, at the price range for stepping up to the new Z, I really don't want to have to search out new wheels from the start. And why would I go OEM if the originals had issues--unless there are no good aftermarket solutions. You have a good chance of the issue happening again if you drive the same roads daily. I need to do more research before I make any move here.
I love the new C7 Looks and performance and would really like to move forward but this causes me to pause. Man on something as basic as wheels on the ground issues and the safety issues that can cause .
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Old 11-18-2017, 11:19 AM
  #49  
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Originally Posted by Newton06 View Post
This thread makes me nervous. I have bent rims on my C7 Z51 but it has a ton of really hard track days on it including offs and spins, so not a big deal there.

However...

I just purchased a 2018 Z06 Z07 and do not want to run into bent wheel issues.

GM's customer service is largely in the toilet. Most dealers use service advisers to serve as gatekeepers to ensure the dealer gets paid for work. Warranty issues where the dealer may not get paid almost always get dismissed prima facie.

I've owned Lexus & Mercedes vehicles & the dealership experience is night and day.

It's hurting GM because no matter how good the Corvette/Camaro is, people demand better service and will walk to other brands that actually know what that means.

I took my Z06 in to a local dealer (Capital Chevrolet in Raleigh) that refused to perform the 500 mile oil service because they didn't want to risk damaging the car pulling in on their lifts. They also refused to address a TSB I asked about, and refused to address two paint/trim defects that I did not see when I took delivery of the vehicle 10 days earlier.

Really????
you and everybody else needs to call GM CORP customer service,,its in the Renaissance center in Detroit,,and tell them about your bad dealer experience ,,this is the only way things will change

and start emailing GM direct
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Old 11-21-2017, 03:09 AM
  #50  
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Thanks.......
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Old 11-28-2017, 09:59 AM
  #51  
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I tried to have a technical discussion here - https://www.corvetteforum.com/forums...ver-modes.html. It'd be great to have a GM rep chime in and lend us some expertise...

On my GS, the popular opinion is to drive in Tour and that Sport/Track increases the chances of bending/cracking a wheel. I think the opposite may be true. The question to GM is, as the suspension resists compression from a tire rolling over an irregular surface, can it generate enough force to bend a wheel? In other words, can a wheel bend/crack within the normal part of the suspension's stroke regardless of driver mode. Simple question. If it can not, the damage has to occur when the suspension totally bottoms out or hits the hard stop. And if that's the case, driving in Sport or Track will give you more resistance to bottoming and should be better than Tour for protecting wheels.
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Old 11-28-2017, 11:05 AM
  #52  
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Itís a combination of a low profile tire, and a inferior quality rim. Period.

Last edited by meadowz06; 11-28-2017 at 11:05 AM.
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Old 12-09-2017, 04:35 PM
  #53  
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I found my driver Rear was cracked at 9k miles, in my 17 Grandsport. GM did not warrenty. On the bright side, my 35k 2014 Camaro 1LE came with amazing forged wheels. I drove 35k miles over the exact same roads, plus did years of track days running NT01 tires, and nary a problem. Can we have better wheels please? Maybe as an option for forged wheels, in the future?
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Old 01-05-2018, 06:08 AM
  #54  
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Default 2018 Z06 A8 vibration and my wheels are bent???

I felt a bad vibration in my steering wheel and seat from 10 mph to 65 mph. Dealer tells me 4 of my wheels are bent. Never tracked my car. At first I didnít believe the dealer so I took it to another deal. They replaced the shocks. Reprogrammed the transmission and still shaking. I did speak with a rep from GM and he did tell me they are aware of the z06 wheels being defective and have bad casting from the factory. My car stayed at dealer number 2 for 2 months. The GM engineer came out and said for sure my wheels are bent. I am very disappointed as to why I was told gm is aware of the wheels being defective and the final decision from the engineer was they wonít cover it under warranty. I was told from customer service that they were covered under warranty and why did I pull my car out of dealer 1. but I guess the final decision GM said is no to warranty. Now I have the car back at shop 1 and thank god I have the tire and wheel package. I still donít believe itís the wheels but will keep you all posted once I get my car back. This will be my last GM product because Iíve had so many issues with my z. Between customer service, GM lying to me and the way dealerships have treated me and the car. I will never put myself or my money in a gm product again. Both dealers claim theyíve done a road force test with no proof given to me or shown to me. The wheels have no cracks or doesnít show any bent areas. Iíve owned so many cars I canít even count. If itís my wheels shame on GM fro not standing behind there product and the most important on there word. Poor design on wheels shouldnít be the consumers problem. No I havenít hit any pot holes and even if I did it wouldnít bend 4 wheels. I see on all these forums lots of people having this issue on the z06 and gs. Iím so pissed I canít sleep.
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Old 01-05-2018, 09:49 AM
  #55  
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Lovely - so they admit it's a weak wheel design problem but won't cover their own mistake on an under warranty car?
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Old 01-05-2018, 02:35 PM
  #56  
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Originally Posted by My85 View Post
Wow Guys--this is interesting on the Wheel issues. I got rid of my C4 a while ago and was looking to really Step up. But Crap wheels bending and cracking man. I thought the overheating issue was bad on a 90k car supposed to be track ready. But now the issue like this where folks are saying not to use the "Track Mode" option for fear of wheel failure. I know the Forums usually concentrate issues because its a place to report the issues and see if anyone else is having the same problem but at least for me, at the price range for stepping up to the new Z, I really don't want to have to search out new wheels from the start. And why would I go OEM if the originals had issues--unless there are no good aftermarket solutions. You have a good chance of the issue happening again if you drive the same roads daily. I need to do more research before I make any move here.
I love the new C7 Looks and performance and would really like to move forward but this causes me to pause. Man on something as basic as wheels on the ground issues and the safety issues that can cause .
To use a hackneyed quote: "You got THAT right, driver."
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Old 01-05-2018, 02:47 PM
  #57  
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I bought a used 2011 C-6 Convertible. I had new tires installed and discovered three out of four wheels were bent. I had the car at the local dealer and asked the service manager about the issue. He said that it is a common problem and they have a company come to the dealership on a regular basis to straighten wheels. A local tire dealer has the equipment to straighten wheels and also tells me it is a common problem.
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Old 01-05-2018, 03:09 PM
  #58  
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Originally Posted by quick04Z06 View Post
I had always assumed OEM GM wheels were strong and light enough so you could track your car safely on them using any DOT legal rubber. I certainly hope GM spends the money to make this so. If OEM GM wheels break and someone runs off track, I would assume GM could find themselves in a pickle....
Doubtful....if you're old enough to remember the old "Saturday Night Live" skit with the sniveling lawyer who could keep a one+inch ash on his cigarette, that's how I feel about GM. They screwed the pooch with valve guides on the LS7 for the C6 and walked away clean; you think they're going to do better with Grand Sport wheels?? Mmmm, got a nice antique bridge in New York I can give you a fine price on....
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Old 01-05-2018, 05:44 PM
  #59  
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Originally Posted by pdiddy972 View Post
Lovely - so they admit it's a weak wheel design problem but won't cover their own mistake on an under warranty car?
Thatís why Iím furious. Canít wait to see what the outcome is going to be on this issue.
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Old 01-06-2018, 01:55 PM
  #60  
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Seems obvious... run flat Michelinís. He certainly alluded to that
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