z51 or not
1. Rusty rotors
2. Brake dust everywhere
3. Rougher ride than non Z51
4. Tires not to be driven on bellow 40 degrees
5. Paying $6345 more for the above 4 "perks" nobody wants if not tracking
Last edited by wbear; Dec 26, 2024 at 03:28 PM.










https://gmauthority.com/blog/2021/06...h-z51-package/
https://gmauthority.com/blog/2022/07...g-z51-package/
P.S. Their is no real wrong answer here and I will add that age may play into this some but doesn't have to. I also have no intention to ever track my cars, having both a 24 non-Z51 3LT coupe & a 23 Z-51 2LT HTC (both with mag). I prefer the non-Z51 FE2 mag vehicle, for reasons previously cited. The non-Z51 C8's still offer ridiculously excellent road feel with an adjustable ride and WAY less rock noise coming off of the all-season Michelins as compared to the Z51 Michelin Pilot Sports (summer only) 4S's.
Truth is with the deals available today on left over MY24's, if you choose to go after a car with Z51 spec'd out your way it and more will basically come free.
Good luck!
Last edited by 49northls3; Dec 25, 2024 at 03:16 PM.










This is seriously overblown and only happens when the rotors get wet and sit for a moment. Once the car is moving, the little rust that shows up goes away. The only reason this happens is due to the Z51 rotors’ cast iron composition, which is prone to rusting when exposed to moisture, especially after washing the car. This surface rust typically goes away after a few brake applications, so it's not a cause for concern. These rotors provide better stopping power.
https://www.corvetteforum.com/articl...fixable-error/
Something to be aware of to be sure, but I put a coating on my wheels and dust washes off with a simple brush or spray down.
The eLSD all by itself has advantages in ordinary street and highway driving, it’s not just for the track and it is only available on the Stingray with the Z51 package.
https://www.carparts.com/blog/electr...a-brief-guide/
Since most Stingrays have the package, not having it might lower resale value, assuming you care about such things.
The point of my reply is not to sharpshoot you or to be argumentative, but to relay to other prospective buyers on the forum that there are tangible advantages to having the Z51 beyond the track.
It’s not a must-have, but like anything else you opt for or opt not to have, there are trade offs.
For example, having the front end lift puts you in a position for it to perhaps fail on you and require service. However, not having it increases your chances of scraping the front end on a high speed bump or a not-so-obvious steep driveway or exit from a business parking lot.
I’m just providing all of the information so that folks reading this thread have all of the information with context.
Last edited by Chemdawg99; Dec 25, 2024 at 04:04 PM.
The Z51 option is marketed as a performance package, not a track package. However GM requires to car to have the Z51 performance package if tracking the car.
When purchasing C8 Stingrays outside of North America there is no option to purchase the car without the Z51 package. It needs to meet the expectations of the cars it will be competing against overseas.
You shouldn't be driving cars on the street at speeds where the performance advantage of the Z51 makes it faster than the non-Z51. The advantage of the Z51 package on the street is increased feedback and composure at speeds below the absolute limits. Jim Mero has stated that even typical drivers would be able to tell the difference during spirited street driving even if the car is equipped with MSRC.
The summer tires can be used down to 20F without damage. They will still have traction comparable to the AS tires in cold, dry conditions. However AS tires will be better in cold wet conditions, and much better in snow and ice. The AS tires aren't quieter than the summer tires, both will get noisier with age. People replace worn summer tires with new AS tires and attribute the difference to the AS tires.
Don't buy the Z51 package for better resale, you will only get a portion of your investment back. Get the Z51 package because you are going to track the car or because you will enjoy and make use of what it brings to your driving experience.
The best performance value is probably a non-Z51 with MSRC and performance exhaust. Z51 just turns it up a little. If you live and die for canyon carving you will want the Z51 package.
The Best of Corvette for Corvette Enthusiasts
I let GF select the car cosmetics and she did not like Z51 rear wing. About 70% of the C8s in 2021 were Z51. 2LT and 3LT were split with about 10% more 2LT. She did not like the colored interior so got 2LT with black interior. With all the money we saved, she bought a handbag. I did not get to choose the color.
Owning:
I was pleased to find the A/S tires will last almost double the Z51 "summer" tires. Yearly, the police check for cars with summer tires driving on a highway to the mountains and they were shocked to find a performance car with A/S tires. I have driven both models and cannot determine any performance or ride difference. Maintenance and other operating costs are similar although I suppose the Z51 brakes may cost more? C8 aficionados may be able to see a difference in the two models but 99% of people look at shape and color more than the badge so even at car shows my blue car gets more attention than a red Z.
Selling:
When selling my previous Corvette, some people asked whether it was Z51, but the fact that it was not did not stop them from asking for a viewing. Here, the Stingray new cost is 7% less than the Z51 so if a used Z51 is selling for $50k I can ask advertise for $47k and that may be a factor for someone looking for a used performance car. However, selling was not a consideration in my purchase decision.





The Z51 option is marketed as a performance package, not a track package. However GM requires to car to have the Z51 performance package if tracking the car.
When purchasing C8 Stingrays outside of North America there is no option to purchase the car without the Z51 package. It needs to meet the expectations of the cars it will be competing against overseas.
You shouldn't be driving cars on the street at speeds where the performance advantage of the Z51 makes it faster than the non-Z51. The advantage of the Z51 package on the street is increased feedback and composure at speeds below the absolute limits. Jim Mero has stated that even typical drivers would be able to tell the difference during spirited street driving even if the car is equipped with MSRC.
The summer tires can be used down to 20F without damage. They will still have traction comparable to the AS tires in cold, dry conditions. However AS tires will be better in cold wet conditions, and much better in snow and ice. The AS tires aren't quieter than the summer tires, both will get noisier with age. People replace worn summer tires with new AS tires and attribute the difference to the AS tires.
Don't buy the Z51 package for better resale, you will only get a portion of your investment back. Get the Z51 package because you are going to track the car or because you will enjoy and make use of what it brings to your driving experience.
The best performance value is probably a non-Z51 with MSRC and performance exhaust. Z51 just turns it up a little. If you live and die for canyon carving you will want the Z51 package.
didn’t care for the above things as well as the ricer pep boys rear spoiler
I have mag and exhaust and it goes as fast as I care to go
The Z-51 package has more to offer over a standard C-8, including the DCT itself.
For those that go with a non Z-51 car, it is your call but the Z-51 car is a much better car in many ways.
I personally know now just how powerful the Z-51 brake package really is and it is very impressive once you need them.
This has been beat to death but the Z-51 is the way to go, these cars are just so much better.
Enjoy the ride.
And don't let people fool you. If you get caught driving fast enough on the street to take advantage of the bits and pieces that come with the Z-51 package, you're looking at jail time.
With that said, If there's any possibility you may track your C8 then by all means spend the money for the Z51 package. But don't skip the mag ride shocks that will cost you another $1800. There's no performance traction management (PTM) without the mag ride shocks. If you're going to go with a track focused C8, you might as well go all the way and get all the goodies.
All 7 of my Vettes have had performance suspension. I buy a Corvette for performance and although I don' Track, where safe push near it's limits. If you drive it like a Prius, don't bother!
With my 2020 C8, where safe. Glad I had Z51, MRC and eLSD!
2- Is Z51 needed?- No
3- Do some people look for Z51 on a used car?-Yes
4- Will Z51 stop some people from buying a used car?- Yes
5- Does Z51 completely upgrade your braking, cooling, deeper gearing, and on C8 Z51 also includes BIGGER/STRONGER HALF-SHAFTS- yes
6- Will Z51 increase my trade/resale?- yes
7- Will GM warranty track events If you or the next person tracks the car?- yes
8- Will GM warranty track events if you or the next person tracks the car without Z51?- no
9- Does Z51 give you a better driving experience? - maybe to some
10- Will Z51 make a difference to 99% of the drivers on the road?- no - 99% of the drivers on the road can not out drive a std C8 regardless of what they tell you.
11- Is the first question you will be asked when people see your car “does it have Z51”?- yes
*Re-read the second half of #10
Does my personal C8 have Z51?- yes
Item # 11- Have never been asked if my SR has Z51 except for other corvette owners and most of them can tell without asking.















