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^^^ What I found interesting with the 1" wider tread Michelin Pilot Sport 4S 265/30/19 versus OEM 245/35/19 front tires, is the Section Width on the 8.5" OEM rims will be only about 1/2 inch wider. Should not be an issue full lock right & left. It might rub the inner fender well. But like my 2017 Grand Sport, which rubs the inner fender panel slightly at full lock, it's plastic and moves! Full lock is seldom used and when it is your traveling very slowly.
Can never have enough tire. I'm sure Chevy took this into account
Depends on what you want to do..... a full-bore road-racing car vs a nice-driving street car.... totally different.
I have always said "what is good for the track is bad for the street, and vice-versa... anything in between sucks at both"
BTW, I have driven a full race 911 to the track and back, and it is a handful.... I'm OK if anybody wants to personalize their car.... but unless it is done with a clear vision of the exact use of the car, its easy to just spend alot of $$$ to F-it up.
Depends on what you want to do..... a full-bore road-racing car vs a nice-driving street car.... totally different.
I have always said "what is good for the track is bad for the street, and vice-versa... anything in between sucks at both"
BTW, I have driven a full race 911 to the track and back, and it is a handful.... I'm OK if anybody wants to personalize their car.... but unless it is done with a clear vision of the exact use of the car, its easy to just spend alot of $$$ to F-it up.
Fyi just saw the thread here recently in the C8 subsection where the vendor spec'd out 325/285 on proper dimensioned wheels for the C8. Now, that is badass.
Depends on what you want to do..... a full-bore road-racing car vs a nice-driving street car.... totally different.
I have always said "what is good for the track is bad for the street, and vice-versa... anything in between sucks at both"
BTW, I have driven a full race 911 to the track and back, and it is a handful.... I'm OK if anybody wants to personalize their car.... but unless it is done with a clear vision of the exact use of the car, its easy to just spend alot of $$$ to F-it up.
Had an early 2014 Z51 and wondered why it had the same width rear tires as my C6 Z51 with more power and even more important, more low end torque with variable cam timing the C6 did not have. As expected it was traction limited even merging into the 65/70 mph traffic on the 4 lane highway at the end of my street! My Grand Sport 335 versus 285 section width tires is still traction limited but not as much. No issues merging into traffic etc. So don't need to drive on a race track to benefit from wider tires.
Been modifying cars for 60 years from my 1st, a '41 Ford business coupe I stuffed a modified '50 Olds engine! Yep traction limited. Heck even the 420 section width Sticky Mickey Thomson's on my ProStreet Rod with a set back 502 BB and 53% of it's weight on the rear 4 bar link, 9" Ford rear is traction limited. The wife's SUV has 315 section width OEM tires!
PS: the Grand Sport reaches a higher lateral "g" around the fountain at the end of my street than my 2014 Z51!
All cars are "traction limited"....on the track, you just drive to the traction limit, and swear under your breath that you "need more tire"....
My point is simply that, for most street driving, sexy big tires, big wheels, race suspension components, etc, can produce a car that is not very nice to drive.
I use my z51 as a DD, and also put in seats, and race tires for track, and can tell you, it is not a pleasant car to drive, and is not really competitive on the track.... but at this point, this compromise fits my lifestyle.... every car is a compromise..... it's all about what you want.
^^^
Yep, if using true racing tires that need to be hot and race brake pads that need to be at 400F min to stop well it would not be great driving on the street. Just like a cam that provides minimum torque below 3500 rpm is no fun on the street. However my 2017 Grand Sport is a perfect example of 335 section width rear tires making better street car that the 285 on my 2014 Z51. Same power, same engine.
All 5 of my Vettes (as will my C8 6th) were DD's. The Grand Sport is my only car and drive it into town often. I do take back roads the 20 miles with some twisties and some with farm fields on each side- no homes. Yep my 2014 Z51 was good BUT the Grand Sport is a better DD, from my experience. Agreed there is a limit, like the 420 section width rear tires on my Street Rod are not for canyon carving, but either is the car! That is not what I designed it to do.
In Stock Class you can change one Anti-Roll Bar, so it will be interesting to see which direction the stock folks go. If it was me, I would put the widest rubber I could on it and change the bar needed to get the balance. If I was guessing, I would think in this case maybe the rear bar.......
I was buying MPSC2 tires and wheels for my C7, and the issue of F/R wheel diameter came up..... could not get a definitive answer, but Bill from Dearborn, and some others who seem to be pretty knowlegeble suggested that if the delta is outside of a +/- 2-4%, it could screw up the ABS....
I played around and got it to about 1.9%, and it SEEMS to work OK, but this is the kind of stuff you need to consider...these cars are so computerized, and there is not a lot of really hard info out there.
I played with C4, 5, and 6 setups and I would look for the tire with the shortest diameter to get the car lower and to shorten gearing, and I never noticed any ABS problems. I don't know about Active Handling since I almost always ran with that off, but don't recall noticing problems.
I bought my C8 about 6 weeks ago. First thing I did was order new tires and wheels. Vossen custom wheels have a 5 month lead time. I'll let you all know how everything fits when it gets here in April.
How did you determine that 355 rear tires will fit under the base C8 fenders? Those are wider than the Z06 tires with 1 1/2" flared fenders.
I watched a half dozen YOUtube Videos with the same setup with no issues. I will say Vossen made me sign a big waver stating that all fitment issues are and my responsibility. They said they had never done this extreme setup on any C8 before so any fitment will not be guaranteed. I signed with no reservations..... I will be the first..... Others can follow.....
But here's what Vossen didn't say... We tried that and it didn't work. They could only say they had never tried that so they could not guarantee fitment..... I will be the first =).
Last edited by Finally-Retired; Jan 4, 2022 at 10:36 PM.
I went thru that with Enkie wheels on my '83 Mazda 626 Touring sedan. Tire Rack said they would fit. I mounted them, drove 5-6 miles with some corners and bumps, unacceptable rubbing. I called Tire Rack, "our guy in (state)" said he had no problems. At least I had no problem returning them. Good luck.
Now I am usually conservative on "going wider" as I do road course events that will generate rubbing. I have seen some fitments where car show guys drive easy on the street and have no problems with fitments that I know would tear up the tires or fender liners on my car driven hard.
I went thru that with Enkie wheels on my '83 Mazda 626 Touring sedan. Tire Rack said they would fit. I mounted them, drove 5-6 miles with some corners and bumps, unacceptable rubbing. I called Tire Rack, "our guy in (state)" said he had no problems. At least I had no problem returning them. Good luck.
Now I am usually conservative on "going wider" as I do road course events that will generate rubbing. I have seen some fitments where car show guys drive easy on the street and have no problems with fitments that I know would tear up the tires or fender liners on my car driven hard.
Yep, recall doing that when I went Plus 1 wheels with Pirelli P7s on the last car I bought when I lived in CT. Just had to hammer the metal fender lip and bend the support bracket for the performance exhaust I had installed. That worked. Tough to get composite fender lips to bend!
For my first new car, a 1967, did a lot of measuring to go Plus 1 with Low Profile tires (when Plus 1 and Low Profile were not words used. Had to carefully review specs of those Continental 714 radials. Lots more effort to get the 16.5 section width (420 metric) Mickey Thomson's to fit the ProStreet Rod I built 20 years ago. Those tires sit inside the fenders. IMO tires sticking out look foolish.
Made wood template with offset sections so I could fit the largest tires, 420 metric section thickness, make the Z06 345's look small! With fenders painted separately all had to fit well when assembled. All clears but not by much and turning radius is limited by front's hitting fenders! No big deal as it mostly goes to shows.!
He guys I have a 2024 C8Z an I plan to track on the stock wheels for now... I can order nanking tires in 325/30/21 × 305/30/20 or 285/30/20
Will the 305 fit with out rubbing.? If not what's the max size that will
If I get new wheels what size and offset is best? Trying to stick in a 200tw
Also if you want to throw any thing you can think of to help on trak thats great.
What I found interesting with the 1" wider tread Michelin Pilot Sport 4S 265/30/19 versus OEM 245/35/19 front tires, is the Section Width on the 8.5" OEM rims will be only about 1/2 inch wider. Should not be an issue full lock right & left. It might rub the inner fender well. But like my 2017 Grand Sport, which rubs the inner fender panel slightly at full lock, it's plastic and moves! Full lock is seldom used and when it is your traveling very slowly.
