My wheels have developed cracks under normal use within 2000 miles of new. These leaks have resulted in air loss.

- Essex Junction, VT, USA

Both rear wheels have cracks from the inner edge to the tire bead area. Both rear wheels are leaking air at over 4 psi per week as verified by bubble testing of the cracks and tire pressure measurements. Both rear wheels and tires are in excellent condition with no damage of any kind from impacts. Rear tire tread at 12,000 miles is still safe, but close to wear out limits. My tire shop cannot install new rear tires on the cracked wheels. Martin Chevrolet in torrance ca reduced their diagnostic fee to $90 for taking photos and processing a warranty claim with GM. The vehicle was still within the 3 year warranty, but GM rejected the claim and refused any kind of compensation for the design defect of Corvette C7 wheels. GM support representative registered my case number 9-5956196745 and suggested that I have the wheels welded or buy two new wheels at my expense. The vehicle has been parked since 14 May 2020 due to risk of loss of air to rear tires. No other assistance was offered by GM or the dealer that sold me the vehicle, penske Chevrolet. The three year warranty was in effect but was not honored. One or more class action lawsuits are pending for this issue.

- Los Angeles, CA, USA

The passenger rear tire kept going flat and the leak could not be found. A tire service center eventually found 2 cracks on the inside lip of the wheel that extended inwards 1.5" into the barrel area of the wheel which caused the leak. This could lead to a wheel catastrophic failure. The shop manager said this is a common issue with this vehicle. The car was taken to a Chevrolet dealership for a warranty claim. The shop foreman filed the claim but GM denied it. The foreman also indicated this is a common problem. I purchased a new wheel and kept the old one. The white marks in the pictures are just a way to highlight the cracks. There are no indications of impacts that could have caused this issue.

- Hockley, TX, USA

I purchase the car as a one owner used. At the time of pick up the message on the dash read low rr tire. The service dept took the car for inspection. The tech came back and said he didn't see a problem. He stated he filled the tire and reflashed the computer as precaution. After a 5 hour trip home with the car in an enclosed trailer, I immediately put the car in heated storage for the balance of the winter. I didn't think much about the tire situation. When I brought the car out this spring the dash message said flat rr tire. I took the car to a reputable tire shop to see if there might be something in it. He called about an hour later telling me there were 2 cracks in the rear of the wheel. After checking on the Corvette forum I see where this is an ongoing problem especially with the grand sport. I am afraid to take the car out especially with family members. It appears that this is going to continue to happen and I feel I should be compensated. An after market set of quality wheels can cost $5000 or more and I don't feel I should be responsible for this. I don't only blame GM but also the selling dealer as I believe they knew of this problem. So as of now I have a useless $80 K car the car was purchased at bradley hubler chev. In franklin, Indiana. I purchased the car 2/17/20. It was already fractured.

- Rockford, IL, USA

The right rear wheel crack tearing the tire. I was not aware of the problem until my car sent me an email.. I had not driven my car for 2 days. My car was stationary at the time.

- Chicago, IL, USA

Normal driving caused 4 major/minor cracks in 1 wheel/rim with slow loss of air pressure. With mileage of only 14599 on the car as of 10/12/2018. No warranty per GM even under new car 3 year/36000 mile warranty. Cost to me of $881.81. Pictures of cracks available. Lawsuits pending against GM currently (class action). When they debuted the 2017 grand sport model on a 40000 mile test run they had a total of 10 cracked or bent rims due to poor rim construction by ronal in Mexico, report available. This problem is not going away. I fear that I'll lose a rim, puncture a tire and have an accident. What are my options?

- Spring, TX, USA

Just started to noticed a slight leak from the driver side rear tire over a few days, the leak progressively got worse. I decided to go get it taken care of. Discount tire couldn't find an issue with the tires. Then while working on the tire they noticed several stress fractures on the inside of the wheel. It ended up being on both rear tires and a wheel in the front had damage as well. Tried to go through the dealership to get it fixed since the car has bumber to bumber warranty and they told me it was from potholes and they couldn't cover the damage. The car was both stationary and in motion when I noticed the leaking. The vehicle has only been driven on pathed roads.

- Abilene, TX, USA

Passenger side rear wheel cracked, front driver side wheel cracked, cracks found when I took car to shop for leaking tire

- Odessa, TX, USA

While getting new tires (15K miles) at the tire store on my Corvette Z06 the manager told me that I had a bent front wheel. I didn't recall hitting anything significant that could have caused this. He stated that he could balance it but couldn't be sure it wouldn't have issues. I began to notice a tire noise that was coming from that same wheel. I made some measurements (radial run-out) and realized it was quite bent (.057in run-out). It is common knowledge based that GM refuses to admit that they have a design flaw so I decided to buy some aftermarket wheels as I didn't want to pay for the poor and dangerous design. At the time of installing the new wheels I measured each old wheel to see if they are bent. At least three if not all four are bent to varying degrees and once again I don't recall hitting anything. As a matter of fact GM sells this model of car and makes claims that it is the best track car (Corvette) they've ever released. My car has never been on a race track and is a normal daily driver. From a safety perspective I realized at that time that one of the rear wheels was actually cracked and very bent. The wheel could have caused me to have an accident if it had cracked further and at the wrong time. I have taken the wheels and all measurement data to GM to try to get them replaced and GM's stance at this point is that all bent wheels are the customers fault. To make it more confusing GM can't give a consistent story on what defines a bent wheel. As of filing this complaint I found 199 similar complaints with the same generation of Corvette. Hopefully GM will be held accountable for the poor wheel design before someone gets hurt because of a cracked wheel. I have attached pictures of the wheels showing the crack and max run-out on each of the four wheels.

- Austin, TX, USA

3/19/19 discount tire alerted me of crack in my passenger rear wheel 02/12/20 discounted tire alerted me of a crack in my drivers side rear wheel

- Frisco, TX, USA

The contact owns a 2017 Chevrolet Corvette. While driving at various speeds or parked, the inside of the rear wheel rims fractured. The TPMS warning indicator light was illuminated. The vehicle was taken to (jim glover Chevrolet 707 w 51st St, tulsa, ok 74107 (918) 446-2200) where it was diagnosed that wheel was defective. The wheel was replaced. The manufacturer was contacted but no further assistance was provided. The failure mileage was 70,000.

- Eufaula, OK, USA

With less than 15000 miles I had 2 wheels with cracks in the lip portion of the wheel. Tire store indicated the other 2 wheels are out of round. GM refuses to warranty, aftermarket warranty denies coverage since this is a clear "factory defect." GM is selling sub quality wheels that could fail at highway speeds, and not honoring warranty regarding factory defects. Many instances of this problem on car forums. Many.

- The Colony, TX, USA

Rear tires of my 2017 Corvette grand sport were leaking air. Car was taken to the dealer where the mechanic knew exactly where to look. Both rear rims have multiple cracks and the front rims are bent in several areas. Although this is a common problem the factory will not replace the defective wheels. After only 18K miles the estimate to repair is $5,652. Without repair I risk tire blow outs.

- Holbrook, NY, USA

I own a 2017 grand sport Corvette and found a crack in passenger rear rim, picture is below. It is a known fact that there are too many crack C7 Corvette rims and GM will do nothing about it. I was lucky and noticed psi in tire leaking and monitored, finally went to dealership where inside rim was cracked.

- Goose Creek, SC, USA

I went out to my vehicle to drive it to work and saw that I had a low tire pressure warning. The pressure was 19 psi, and normal should be 30 psi. I inflated the tire to normal pressure, and a week later the pressure had dropped to 9psi. I took my vehicle to discount tire assuming I had a tire puncture, but after removing the wheel and tire they immediately detected a crack in the wheel. There was no damage to the wheel noticed during the most recent tire replacement at ~20.4K miles and the previous tires showed no damage from hard or sudden impact. No hard or sudden impacts have occurred since either.

- Randolph Afb, TX, USA

I took my wheels to a shop where they reported that all 4 had bent. In trying to repair them they noted that they wobbled when on a machine and that they seemed prone to being easily bent. Also the black powder coating was inconsistent and easily chipped. I noted that others have reported issues with the grand sport wheels. Repair cost is unknown, but I now am concerned with continued use of the wheels due to potential bending and cracking issues.

- Ankeny, IA, USA

At just less than 5000 miles I was experiencing vibration specially in cars sport mode on my 2017 grand sport Corvette. Took to tire shop for a wheel balance and was notified three wheels were bent. Took car to dealer who acknowledged also wheels were bent in repair order. I was told by dealer bent wheels are not covered under 3yr/ 36K mile warranty. Dealer suggested I contact GM. Later internet search revealed many other people experiencing bent wheels on this particular Corvette model. This is a very serious safety problem as wheels are cracking and could foil completely causing uncontrollable situation.

- Rio Verde, AZ, USA

I was taking a drive along the coast and hit a small bump. The next day my tire pressure read low so I took the car to a tire shop and they showed me two cracks in the inside of the rim

- Pasadena, CA, USA

While driving on highway 108 near sonora California the right rear tire started to lose pressure, upon inspection found the wheel to be cracked (1.5' long by 1/16' wide) at the inner bead area. We had not hit any potholes or other obstructions in the roadway, also no damage to tire was noted nor was there a dent in the area of the crack.I believe that if this crack had gotten any bigger the tire could have been damaged causing an accident, considering the fact that it is a runflat tire a reasonable person may have driven it for up to 50 miles to get repaired or replaced thinking that it was a nail in the tire, this could've led to a catastrophic failure of the wheel. I have had the vehicle inspected at the dealership american Chevrolet in modesto California and they stated that there is a cracked wheel and all three other wheels are bent even though we never hit any objects on the road. They created a dealer case number 9 - 5742425781. They claim that General Motors is unaware of this defect, I believe this to be untrue as many forums are reporting the same problem throughout the model years of the C7 generation grand sport and Z06 models.

- Modesto, CA, USA

I have 2017 Corvette grand sport. I bought this car Dec 2018, and I am second owner. There has been problem on my rear wheel. I had to change the rear wheel 3 times for 1 year. When tire pressure is depressed, there was crack on it. I complaint to the dealership about this problem. But they said it's not covered bumper to bumper warranty. I paid to change new wheel on my car 3 times. Yesterday I realized that the tire pressure was deflated again even the same wheel which I changed new wheel 1 month ago. For 1 year, wheel broken 3 times is too many and not acceptable. And customer has to pay all things to fix and change wheel.

- Weehawken, NJ, USA