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ZL1 Wheels/Tires Wheels and tires discussion for ZL1

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Old 09-04-2012, 03:24 AM   #1
Iroc87
 
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New tires on 2013 ZL1

I'm thinking of going with these on the rear because I have a nail in the left rear tire. I could replace only the 1 tire with the OEM Goodyears F1 305/35zr/20

Any thoughts about going with these for The rears
pilot super sport
Size: 315/35ZR20
Sidewall Style: Blackwall
Serv. Desc: (110Y)
Load Range: XL
UTQG: 300 AA A Price: $447.00 (each)
Estimated Availability: In Stock
Estimated Arrival: Get Estimate
Qty:2
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Old 09-04-2012, 05:19 AM   #2
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Just ordered a set of these myself. The Labor Day sale was on and could not resist. They're not needed yet but will be in the garage when needed.
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Old 09-05-2012, 10:04 AM   #3
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The slightly wider profile will look better on the oem wheels but you may have issues with rubbing the fender during moderate/heavy suspension travel.
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Old 09-05-2012, 10:50 AM   #4
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How much wider are the 315s than the stock 305s? Would they potentially rub on the inside or the outside?
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Old 09-05-2012, 01:55 PM   #5
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How much wider are the 315s than the stock 305s? Would they potentially rub on the inside or the outside?
10 mm
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Old 09-05-2012, 01:56 PM   #6
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I'm not sure what would happen if one tried to install a wider and taller tire. It doesn't sound like a good idea though.
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Old 09-05-2012, 02:16 PM   #7
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in there your going to gain 5MM ~ in each direction or ~.2". having said that though not every companies tires are the same. even though they are both say 305 on may be a tad wider or narrower.

my gut tells me at factory ride hieght that will not cause rubbing but I could be wrong.

with the road noise of the G2's I will proabably try the super sports even though they are more money unless something better comes along between now and then.

what I would do is load up the suspension with a floor jack an look for clearances. See if there are any tight spots from the factory.
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Old 09-05-2012, 02:18 PM   #8
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I'm not sure what would happen if one tried to install a wider and taller tire. It doesn't sound like a good idea though.
Stupid question on my part . . . is it possible to replace current wheels with Stock SS wheels? (say, for colder weather driving)

Last edited by I call it Vera; 09-05-2012 at 03:16 PM.
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Old 09-05-2012, 02:58 PM   #9
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Stupid question on my part . . . is it possible to replace current wheels with Stock SS wheels? (say, for colder weather driving)
Not all that stupid of an idea. When I traded in my 2011 Vert for my ZL1 Vert, I hung onto the aftermarket wheels I had so I would have them to put on my ZL1 when I store it for the winter simply because I had heard that the ZL1 oem tires shouldn't even be STORED at temps less than 20 F.

When I mentioned it to the dealer when I picked up the Z, he just told me to bring one of the wheels by soem day and they would try it on one of their Z's to see if it would indeed fit.

Now keep in mind I was talking about just putting them on for storage and not for driving.

The stock SS wheels are narrower than the Z wheels both in front and back, so I'm not sure how much that would affect the way the car would drive.
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Old 09-05-2012, 03:13 PM   #10
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I had the TSW's on my SS and also meant to keep them and put some winter tires (cold weather) on the ZL1. But the person that bought my SS wanted the wheels. So now I am looking for wheels and tires for the ZL1 for cold weather driving

EDIT: see http://www.camaro5.com/forums/showthread.php?t=197439
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Old 09-05-2012, 03:42 PM   #11
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What happens to new ZL1's tires sitting on the lot in snowbelt states?
I'm sure these dealers aren't going to garage these cars, they barely know not to fill them with regular gas.
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Old 09-05-2012, 06:42 PM   #12
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I'll be looking at those tires too once mine are gone... The difference is fairly small, i therefore dont forsee a problem with the wider tires.

Specification Sidewall Radius Diameter Circumference Revs/Mile Difference
305/35-20 4.2in 14.2in 28.4in 89.2in 710 0.0%
315/35-20 4.3in 14.3in 28.7in 90.1in 703 1.0%

They are overall just 1% taller that "shouldn't" cause any problems!
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Old 09-05-2012, 07:38 PM   #13
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Quote:
Originally Posted by Speedforhire View Post
The slightly wider profile will look better on the oem wheels but you may have issues with rubbing the fender during moderate/heavy suspension travel.
Discount Tire has told me they are an "approved" fit.
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Old 09-05-2012, 09:33 PM   #14
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The Pilot Super Sports have a very good reputation in all areas, better than the PS2's. The 10mm increase should not make any ride or interference problems. I know the Goodyears were specifically designed for the ZL1 but I would be very interested to see the difference if you decide to buy them. Let us know.
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Old 09-06-2012, 07:00 AM   #15
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[QUOTE=Iroc87;5530659]I'm thinking of going with these on the rear because I have a nail in the left rear tire. I could replace only the 1 tire with the OEM Goodyears F1 305/35zr/20

Any thoughts about going with these for The rears
pilot super sport


Have Michelin Pilots on my bike
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Old 09-06-2012, 08:23 AM   #16
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I am thinking of getting new wheels. I have looked at my build sheet and still cant find the correct rim size. I know the fronts are Good Years 285-35ZR20 and the wheels I am looking at are Summit 20x9 Ultra 431 Hustler 5x120 +35mm Machined Black Wheels Rims Inch 20"

Getting tired of all the brake dust showing on the alum wheels from factory??
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Old 09-06-2012, 08:28 AM   #17
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Im assuming it is not forged and therefore heavier? It will negatively impact performance to a small,degree.
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Old 09-06-2012, 08:46 AM   #18
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Im assuming it is not forged and therefore heavier? It will negatively impact performance to a small,degree.
Just changing the stock rubber will, havent you guys been reading any magazines? The stock tires are part of what gives the ZL1 an edge on the track, you don't want anything but the stock rubber on this car. Unless it's a wider version of the same tires I would not get anything other than stock.
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Old 09-06-2012, 08:51 AM   #19
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It does not say Forged...says machined. Another issue I just found. The fronts are 20x10 and the rear would also have to be 20x10 as they dont make a 20x11 for the rear.

Now what I say??
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Old 09-06-2012, 08:33 PM   #20
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Originally Posted by alex33x View Post
Just changing the stock rubber will, havent you guys been reading any magazines? The stock tires are part of what gives the ZL1 an edge on the track, you don't want anything but the stock rubber on this car. Unless it's a wider version of the same tires I would not get anything other than stock.
I think GM has a contract w/Goodyear to use these tires. Yes the car was tuned with these tires. That does not mean that there are not better tires out there. The Michelin tires are rated #1 in their class. Read the reviews on these tires.
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Old 09-06-2012, 09:30 PM   #21
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It does not say Forged...says machined. Another issue I just found. The fronts are 20x10 and the rear would also have to be 20x10 as they dont make a 20x11 for the rear.

Now what I say??
Check CCW Wheels. GM used them to build the prototype wheels when the ZL1 was first being tested. They have the correct size and back spacing needed for the Z.
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Old 10-07-2012, 10:52 PM   #22
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I would look into these new tires from Pirelli

http://www.pirelli.com/tire/us/en/ca...plication%3DMS


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Old 10-07-2012, 11:05 PM   #23
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Quote:
Originally Posted by bwolf11 View Post
I am thinking of getting new wheels. I have looked at my build sheet and still cant find the correct rim size. I know the fronts are Good Years 285-35ZR20 and the wheels I am looking at are Summit 20x9 Ultra 431 Hustler 5x120 +35mm Machined Black Wheels Rims Inch 20"

Getting tired of all the brake dust showing on the alum wheels from factory??

Change out the pads. Black wheels will also look like crap if you dont clean the dust of regularly and ruin your finish. Changing out the pads is the best resolution.
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Old 10-07-2012, 11:57 PM   #24
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A set of these would keep the same tire height using 285/35-20 on front and 315/30-20 rear. The 305/35-20 stock tire and the 315/30-20 in R888 have same tire height and rolling circumference. The Pirellis in the previous post would be taller in front than stock and shorter in the rear. These would really give you and edge on the track. No street tire will perform on track as well as a dedicated track tire with R1 compound

http://toyotires.com/tire/pattern/pr...petition-tires

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