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Took RedHot in for her one year anniversary 'check up' with 7k miles on her. Initially they were going to put in Dexos but I had them call and confirm it qualified for Mobile 1. They ended up putting in Mobil 1 at a warranty cost including filter of $205.44 (no charge to me). As it turns out I just happened :rolleyes: to walk by when the tech was about to put in the oil- he did not know who I was- and I asked him what he was putting in. He said and showed me the unit nozzle and it was Mobil 1 (I do miss the old days when the opened actual cans so there was no question about what was going in :D). Had the differential checked specifically (in addition to their 27 pt inspection) and they said it was all OK. Tires showed uniform wear left to right comparison, fronts both being at 11/32nds and rears both being at 12/32nds. The Service Manager, a Corvette enthusiast, told me he used his Tourette syndrome to tell his techs the car was to be returned to me looking as %*#ing good as it came in :D Which it was :cool: So both RedHot and I feel great :)
 

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Jeff, good check up story. I'll make some notes here and prepare when it's time to take "Beauty" in I'll be ready with my service people.
 
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Thanks Jeff.

I'm sure this is covered somewhere, but when I was in the plant, I wondered out loud about tire rotation being that there are different sizes front and rear. Do we rotate left to right fronts (and conversely rears)? Or do we not rotate at all?
 

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You do not, and for the same reason the warranty on the tires is cut in half because you can not rotate them and thus alleviate some of the wear. They don't last that long anyway, maybe 25000 miles if you are lucky.
 

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You do not, and for the same reason the warranty on the tires is cut in half because you can not rotate them and thus alleviate some of the wear. They don't last that long anyway, maybe 25000 miles if you are lucky.
Thanks Buzz. That was honestly my top guess, but I'd get to look at a manual for the answer.

25000 miles should last us three years or so I'd guess. ;)
 

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The 2014 Owners Manual, at pages 10-56 to 57, indicates left-right rotation every 7500 miles, and that the first rotation is the "most important"

Tire Rotation
The tires should be rotated
every 12 000 km/7,500 mi. See
Maintenance Schedule on
page 11-3.
Tires are rotated to achieve
uniform wear for all tires. The
first rotation is the most
important.
Anytime unusual wear is
noticed, rotate the tires as soon
as possible, check for proper tire
inflation pressure, and check for
damaged tires or wheels. If the
unusual wear continues after the
rotation, check the wheel
alignment. See When It Is Time
for New Tires on page 10-57
and Wheel Replacement on
page 10-62.
Different tire sizes should not be
rotated front to rear.
Use this rotation pattern if the
vehicle has different size tires
on the front and rear.
Adjust the front and rear tires to
the recommended inflation
pressure on the Tire and
Loading Information label after
the tires have been rotated. See
Tire Pressure on page 10-51
and Vehicle Load Limits on
page 9-13.
Reset the Tire Pressure Monitor
System. See Tire Pressure
Monitor Operation on
page 10-54.
Check that all wheel nuts are
properly tightened. See “Wheel
Nut Torque” under Capacities
and Specifications on
page 12-2.
 

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Are any of the tires (1YY*7, ZF1/Z51, Z06, Z07) directional? I know some of them have tread where there is an inside and an outside, but I am not sure if there is a direction for spin.
 

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Are any of the tires (1YY*7, ZF1/Z51, Z06, Z07) directional? I know some of them have tread where there is an inside and an outside, but I am not sure if there is a direction for spin.
No, they are not directional but they all have an inside and outside. That means side to side rotation is possible without removing them from the rim though, as I stated in another thread, I don't see the value in this type of rotation as it won't counter the negative cambers effect of wearing the inside first.
 
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Discussion Starter #9
RedHot's tires were not rotated (it was not suggested by the Service Manager nor would I have wanted them to do that). They are very uniform in wear across the tread face and to the edges.
 

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Mine came out real good with 4100 miles on the odo. Oil and filter plus normal checks. I had them put in 9.5 quarts and they gave me the 1/2 quart as I was checking out. I trust the dealer( drive on rack so no need for pucks).
No oil releases and no need for a catch can as of now. cutnout aka Charlie
 

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No, they are not directional but they all have an inside and outside. That means side to side rotation is possible without removing them from the rim though, as I stated in another thread, I don't see the value in this type of rotation as it won't counter the negative cambers effect of wearing the inside first.
Thanks, Mark.

By the way, do you know what the +/- specifications are for alignment on the StingRays on the street? I found the specifications for the track alignment specifications in the track prep. document from GM, but I have not found the street specifications.
 

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RedHot's tires were not rotated (it was not suggested by the Service Manager nor would I have wanted them to do that). They are very uniform in wear across the tread face and to the edges.
I am approaching 7,500 miles and was assuming side to side tire rotation is called for. But now I'm not so sure. In post #6 on this thread, MilliwattRob states what the owners manual says on pages 10-56 which calls for tire rotation every 7,500 mi. There is even a diagram of tire rotation shown in the manual.

Page 10-56 also says "The tires should be rotated every 12,000 km or 7,500 mi. See Maintenance Schedule on page 11-3" However the maintenance schedule on page 11-3 doesn't even mention tire rotation even though it lists a total of 19 items that should be inspected or checked under "Required Services Every 12000 km or 7,500 mi." The adjoining Maintenance Schedule graph also doesn't mention tire rotation.

So whats the deal? Should the tires be rotated every 7,500 mi or not?
 

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Discussion Starter #13
I am approaching 7,500 miles and was assuming side to side tire rotation is called for. But now I'm not so sure. In post #6 on this thread, MilliwattRob states what the owners manual says on pages 10-56 which calls for tire rotation every 7,500 mi. There is even a diagram of tire rotation shown in the manual.

Page 10-56 also says "The tires should be rotated every 12,000 km or 7,500 mi. See Maintenance Schedule on page 11-3" However the maintenance schedule on page 11-3 doesn't even mention tire rotation even though it lists a total of 19 items that should be inspected or checked under "Required Services Every 12000 km or 7,500 mi." The adjoining Maintenance Schedule graph also doesn't mention tire rotation.

So whats the deal? Should the tires be rotated every 7,500 mi or not?
If your tread wear is flat across and your Stingray is handling well, I would pass on rotation. Both the 2014 and 2015 Owner's manuals state that tires should be rotated to achieve uniform wear and to rotate as soon as you notice unusual wear. Hence IMO if your tires are wearing uniformly leave them alone. That is what I am doing on RedHot.
 

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If your tread wear is flat across and your Stingray is handling well, I would pass on rotation. Both the 2014 and 2015 Owner's manuals state that tires should be rotated to achieve uniform wear and to rotate as soon as you notice unusual wear. Hence IMO if your tires are wearing uniformly leave them alone. That is what I am doing on RedHot.
Tnx, gotcha. So I guess the standard recommendation which I assume is covered under the 2 year service plan is to have them rotated every 7,500 miles. I think I will at least do the first one even though the wear looks fine since its covered and the manual says something about how the first rotation is the most important.

So how many miles do you have now and your plan is to not rotate them until you notice some uneven wear? Also what is the downside to having them rotated on the 7,500 schedule? And do you know if its covered under the first 2 year "free" service plan?
 

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I probably won't rotate mine but it has been reported that road noise has decreased due to rotation side to side. That is logical since the increase in noise is usually caused by scalloping of the tread and rotation evens that out.
 
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Tnx, gotcha. So I guess the standard recommendation which I assume is covered under the 2 year service plan is to have them rotated every 7,500 miles. I think I will at least do the first one even though the wear looks fine since its covered and the manual says something about how the first rotation is the most important.

So how many miles do you have now and your plan is to not rotate them until you notice some uneven wear? Also what is the downside to having them rotated on the 7,500 schedule? And do you know if its covered under the first 2 year "free" service plan?
RedHot is at 8k+ and unless the service manager suggests that I do a rotation at some point in the future, I am not going to. The car handles great as is, so even why mess with it? If rotation is recommended by my service manager at some point, I would probably do it myself.
 
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Because I don't like changing the rotation of a radial tire. I know, it's old school but I had a tire delaminate on me 20 years ago and it turned out a dealer cross rotated the radials and Goodyear blamed that.

I know, tires are different now but I'll replace these (or the car) long before I hit the wear bars so I don't need to eke out every last mile of life.
 
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Tnx. BTW Whats your guess on the mileage when the wear bars will show. I have heard 25k.
Z51 so I expect no more than 15K before performance degrades. They may not be down to the wear bars at that point but I'm sure they will be close.
 
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