hey guys have new wheels are order but want to put new tires well if it's worth the change . I have a 17 Grandsport non Z07 Is there a better tire out there performance wise ? thank you

 

Stock is best.

 

thank you that's what I've been seeing . Possibly just changing to the Zo7 compound if anything

 

For Track use, drag strip use, or street? Street the stock tires are fine. Track, cup 2's are supposed to be solid but don't last long. I don't like the stock tires on the track as I was able to do this in 3 sessions at a fast pace.

 

great thanks for your feed back .. those do look roasted

 

Everyone always seems to think there is a better tire out there than what came OEM. In the case of the C7, that is NOT the case.

 

I guess everything OEM is perfect 😂

 

No, I don't agree with that at all. However, in the case of tires, the best available for this car came with it.

 

and as a consumer Doing a wheel set up I'm going to ask around if there is a better tire than OEM . Maybe softer quieter better handling and what not .. Since my GS does not have the Zo7 and the stock MICH I would assume the cups would be a slight lu better handling tire but wears quicker . My question was to ask if there are in deed a better tire out there not your childish remark to a simple question..

 

Your response is absurd. I gave you an honest response, because you said you were looking for best or better performance. In that case, the OEM PSS or Cup tires are the very best. There isn't a better performing tire currently available for the C7 GS or Z06.

Now you flip-flop and mention "softer." If you want something softer, and with less performance, or for something better in colder weather, there are other choices, but not for the GS.

I have two sets of wheels and tires on my Z51. I run OEM PSS in the summer, and I run the PS AS3+ when temps are consistently below 60º

I will no longer attempt to help you, because you personify the old adage, "no good deed goes unpunished."

On your GS, you really don't have much, if any choice except OEM PSS or Cup. The Cup tires on the Z07 option are really just very sticky, "track" tires that wear out very quickly . It's stupid to waste those on the street. The PS AS3+ and other choices are not available in Z06/GS sizes.

 

There was a thread last fall, for a GS/Z06, you can mount a set of Pirelli Sottozero 3's for cold weather (and snow if you are so inclined) driving. They aren't available in OEM sizes but they can be mounted on the OEM rims and do not rub. As I recall Luke @ Tire Rack was the person handling all the orders for those that got them.

 

Thank you. Appreciate feed back

 

Tire wear on the track can be determined by the surface of the track as much as is your driving style and type of tires on your car. Putnam Park used to have a very aggressive surface. They recently repaved over the winter. The track is now amazing. Great grip, virtually no tire wear, and no "marbles" on the outside of turns! This is just not my testimony but from everyone that has experienced the track since it reopened over a month ago.

I agree with Foosh that there is no better tire for your C7 than the current OEM Michelins. However, I have taken the plunge to try the new Michelin Pilot Sport 4S tire. It is a non run-flat (ZP) tire, summer only, and Michelin's latest tire technology/chemistry with claimed better dry and wet grip, better braking distances, and better mileage than Michelin's previous PSS (presumably) tires. They were just released last month and in some cases difficult to obtain. Michelin, on their website, does not have them as a recommended replacement tire for Z51 C7's. When I questioned why on their "advisor chat line" the response was that it was a hd (heavy duty) tire and an overkill for my application (?).

There have been several threads already discussing the pros and cons of this tire replacing the PSS Michelin. One that concerns me is how they might negatively affect the software and controller of the MSRC Z51 suspension (the run-flats have different spring rates than non run-flats). I do not have the DSC V2 controller (it's on my wish list!), but it seems that the installation of any non run-flat tire disrupts that controller as well.

I wanted to wait to make the decision on replacement tires until after talking with the Michelin engineers at this year's BASH, but also didn't want to do another 1,000 miles on the original PSS tires. Nevertheless, my first stop at the BASH will be the Michelin tent! It wouldn't surprise me that this new tire technology would make its way into run-flat tires in the near future.

 

From an all around perspective where high performance handling is important the MPSS is a very good tire. Spring Mountain uses them instead of the Cup2s on their Z07 student cars. They wear well, work in wet weather and can be run down into the 20s with no issues.

From a stab and steer stand point they or the Cup 2s may not be able to handle a sudden full throttle application at low rpms due to the 300+ lb ft of torque the LT1 produces just off idle and all the way through the rpm range. Proper throttle application gets around that problem but a lot of people think they are driving a typical rubber band engine and complain when the rear tires break loose. The LT4 produces about 110 lb ft more torque at the same off idle rpm as the LT1.

Bill

 

Yes, the PS4S is the apparent successor to the PSS, but it's not available in GS/Z06 sizes or in ZP version yet. By all accounts, the C7 version of the PSS ZP was engineered to work optimally with the C7 suspensions.

I'm with you except for the part in bold above on which I completely disagree. Yes, the PSS can be run down to the 20's, but NOT without issues, such as very little traction.

I had lot of experience last winter in the 20s w/ my PSS, and they were downright unsafe unless babying the car. Switching to the AS3+ in the same conditions was like night and day different with instantly restored grip and copious traction.

 

Same here with the stock PSS tires. Driving to work in the morning in 30-50 degree weather and I had extremely limited traction. The car would lose traction in the first 4 gears with ease. I learned that when I was going about 45 mph and tried to pass someone while merging... gave it about 1/2 throttle, car down shifted to 4th and spun. That was an interesting experience.

I'm switching to all season tires for next winter... The issues with tire performance are easily sacrificed for safe driving!

 

thank you everyone for your input . Very much appreciated and yes they sux for sure in the cold ..