Feb 23, 2015, 04:55 PM
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Uneven tire wear on C6 Z51
Thread Starter
2nd Gear
Joined: Jan 2011
Posts: 2
Likes: 0
From: Scottsdale AZ
Team Owner
Joined: Sep 2000
Posts: 24,903
Likes: 2,618
From: Far NW 'burbs of Chicago
St. Jude Donor '13
Plus a power steering cooler and on manual tranny cars, an oil cooler.
Rear tires usually wear more in the centers if you are running the stock 30 psi cold, perhaps the previous owner was running low pressures in the rears. Alignment might cause simultaneous inside and outside edge wear on the rears, but that's not common.
EDIT: he said wear on the outside and I was thinking "outside" meant both edges of his tires. But it looks like he means just the exterior edge, which would indeed be an alignment issue most of the time.
Last edited by Gearhead Jim; Jan 10, 2011 at 10:09 PM.
Race Director
Joined: Oct 2005
Posts: 14,555
Likes: 1,254
From: Saint Albans, WV
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Instructor
Joined: Aug 2010
Posts: 192
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From: Lillington NC
I just bought my Crystal Red 08 Z51 6Auto 3LT NPP NAV 17000mi used from a guy last Sept and the tires were all wearing abnormally and fast. Fronts were both wearing on the right and I forget but the backs were funny too. So, I put new non RF tires on at a pro shop and had a four wheel alignment and it was confirmed not to spec. After new rubber, road force balance and 4 wheel alignment, it's friggin' perfect. Got a readout to prove it. The car is awesome.
I make sure cold pressure never dips below 30psi and so I usually set it to 30.5. The TPMS readouts are rock solid and all match my gauge. I can watch the pressure climb evenly while I drive. The tires were originally serviced with nitrogen but the benefit to cost ratio for that I believe is not worth the trouble so I use my garage compressor with regular air and they seem fine like all my other cars.
Can't wait for driving season.
I make sure cold pressure never dips below 30psi and so I usually set it to 30.5. The TPMS readouts are rock solid and all match my gauge. I can watch the pressure climb evenly while I drive. The tires were originally serviced with nitrogen but the benefit to cost ratio for that I believe is not worth the trouble so I use my garage compressor with regular air and they seem fine like all my other cars.
Can't wait for driving season.
Racer
Joined: Mar 2009
Posts: 316
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From: Fort Worth Texas
The Z51 has more aggressive settings on the suspension which is also why the fronts are basically gone in 10K to 15K on factory Z51 specs. The rears will last a little longer.
The street setting is what I have cause I do not track the car and want it to have a good tire life. Tires are not cheap.
http://www.pfadtracing.com/docs/camb...t-settings.pdf
The street setting is what I have cause I do not track the car and want it to have a good tire life. Tires are not cheap.
http://www.pfadtracing.com/docs/camb...t-settings.pdf
Race Director
Joined: Dec 2006
Posts: 14,006
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From: JawJa
I have only 15k on my '07 Z51 and I've been needing new tires for a bit. I contributed mine to running about 32 - 34 mostly. 30 just seemed too sluggish for me and I figured I paid the price with the higher pressure. Seems that there's other factors in play now as well. Always heard about the poor alignment right from the factory too. Gonna be getting new rubber and wheels very shortly (have to) and I'm going to be sure to get it aligned properly.
Race Director
Joined: Oct 2005
Posts: 14,555
Likes: 1,254
From: Saint Albans, WV
I have only 15k on my '07 Z51 and I've been needing new tires for a bit. I contributed mine to running about 32 - 34 mostly. 30 just seemed too sluggish for me and I figured I paid the price with the higher pressure. Seems that there's other factors in play now as well. Always heard about the poor alignment right from the factory too. Gonna be getting new rubber and wheels very shortly (have to) and I'm going to be sure to get it aligned properly.
Team Owner
Joined: Sep 2000
Posts: 24,903
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From: Far NW 'burbs of Chicago
St. Jude Donor '13
And even with those "mile wide" specs, all three of our new Corvettes (2001, 2006, 2009) have had at least one setting that was outside the limits.
Drifting
Joined: Oct 2006
Posts: 1,569
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From: Phoenix AZ
St. Jude Donor '09-'10-'11
Z51 tire pressure
I run 32# cold. Don't go by the tire pressure monitors when cold, they're not accurate till you've driven a couple miles, and by then the tires are heated-up enough to throw-off the "cold" temp reading.
The factory setting on the wheel alignment is indeed a WIDE window. I've seen some factory alignments that were spot-on and some that were waaay off the mark. This is generally true of most cars since the manufacturer relegates the tire warranty to the tire manufacturer and any necessary warranty replacements are pro-rated anyway.
The factory setting on the wheel alignment is indeed a WIDE window. I've seen some factory alignments that were spot-on and some that were waaay off the mark. This is generally true of most cars since the manufacturer relegates the tire warranty to the tire manufacturer and any necessary warranty replacements are pro-rated anyway.
Melting Slicks
Joined: Jul 2004
Posts: 3,443
Likes: 101
From: Kissimme now from LI,NY
The Z51 has more aggressive settings on the suspension which is also why the fronts are basically gone in 10K to 15K on factory Z51 specs. The rears will last a little longer.
The street setting is what I have cause I do not track the car and want it to have a good tire life. Tires are not cheap.
http://www.pfadtracing.com/docs/camb...t-settings.pdf
The street setting is what I have cause I do not track the car and want it to have a good tire life. Tires are not cheap.
http://www.pfadtracing.com/docs/camb...t-settings.pdf
/jc
Le Mans Master
Joined: Jan 2001
Posts: 6,429
Likes: 361
From: Maryville TN
St. Jude Donor '06-13,'16-'17, '19
Quick wear on the right front inside edge is common. It's an alignment set up that gives the best track handing according to GM.
Tom
Moderator emeritus
Joined: Jun 2001
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From: Jacksonville Florida BWO Dayton, Cincinnati, Bloomsbury NJ, Cincinnati
2015 C7 of the Year Finalist
Sigh..
Please show me just where the Z51 is so aggressive in the settings! ALL the C6 settings, EXCEPT for the Z06, look to be the same to me!
If you want tire wear for just highway and street driving, get the camber and Toe down to 0. That will give you the most cruising tire mileage. You want to crush pylons or road race, crank up the camber to -1.00 or MORE for cornering ability. Serious racers are -2.00 in camber or more.
There is nothing in the alignment specs that indicate the Z51 is different that ANY C6 except the Z06.
When you get the alignment, there is NO SUCH THING as +/- on the settings. It should be exactly what you request, not just close.
Elmer
Please show me just where the Z51 is so aggressive in the settings! ALL the C6 settings, EXCEPT for the Z06, look to be the same to me!
If you want tire wear for just highway and street driving, get the camber and Toe down to 0. That will give you the most cruising tire mileage. You want to crush pylons or road race, crank up the camber to -1.00 or MORE for cornering ability. Serious racers are -2.00 in camber or more.
There is nothing in the alignment specs that indicate the Z51 is different that ANY C6 except the Z06.
When you get the alignment, there is NO SUCH THING as +/- on the settings. It should be exactly what you request, not just close.
Elmer
Drifting
Joined: Apr 2009
Posts: 1,332
Likes: 14
From: Tulalip WA
The Z51 has more aggressive settings on the suspension which is also why the fronts are basically gone in 10K to 15K on factory Z51 specs. The rears will last a little longer.
The street setting is what I have cause I do not track the car and want it to have a good tire life. Tires are not cheap.
http://www.pfadtracing.com/docs/camb...t-settings.pdf
The street setting is what I have cause I do not track the car and want it to have a good tire life. Tires are not cheap.
http://www.pfadtracing.com/docs/camb...t-settings.pdf
This is also the settings I have my Z51 set to. I believe your link is broken.
http://www.pfadtracing.com/docs/camb...t-settings.pdf