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Old 12-11-2006, 08:01 AM   #1
ZRCTION
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Question front end alignment

I had all the wheels off the Z this weekend, just doing some extra brake dust clean up. I got a little adventurous and decided to lower the front using the adjustment bolts. Ended up with about a 3/4" drop. Car sits much better, rides the same but scrapes the air dam in my driveway . If I decide to leave it this way, do I need to get the alignment done? I asked the dealer and they said I should'nt, I learned a long time ago, just because they work there does not mean they know half what they think. So, anyone here experience any bad tire ware? Thanks
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Old 12-11-2006, 08:58 AM   #2
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I suggest you put 500-1,000 miles on the car after lowering and then have it aligned. My 07 C6Z was lowered at 500 miles. Some of the GM Tech put too much camber in for the wide tires if you are just driving them on the street so be carefull.
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Old 12-11-2006, 09:01 AM   #3
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I would have a 4 wheel alignment .....mine was out of align front and rear from the factory....
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Old 12-11-2006, 06:05 PM   #4
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Quote:
Originally Posted by iburke
I would have a 4 wheel alignment .....mine was out of align frount and rear from the factory....
They all are out of alignment. That is why you can get a free alignment within the first year or 7,500 miles.
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Old 12-11-2006, 06:29 PM   #5
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Get it aligned right away.

As for giving it time to settle in, I don't believe that to be necessary at all.

When we SLAMMED my Corvette in Florida, we measured it all the way around (fender lip to hub) just after one quick lap around the neighborhood. (less than a mile for sure)

I then drove 19 hours home. After getting home I measured it again and it was exactly the same. So much for settling.
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Old 12-11-2006, 07:30 PM   #6
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Quote:
Originally Posted by Patrick
Get it aligned right away.

As for giving it time to settle in, I don't believe that to be necessary at all.

When we SLAMMED my Corvette in Florida, we measured it all the way around (fender lip to hub) just after one quick lap around the neighborhood. (less than a mile for sure)

I then drove 19 hours home. After getting home I measured it again and it was exactly the same. So much for settling.
To each his own. I am simply expressing thirty plus years of racing experience. If you are going to drive the car on the street slowly like most Corvette owners you need not be too concerned. If you want the best performance possible, let the new car settle in then align it after.
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Old 12-11-2006, 07:44 PM   #7
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Quote:
Originally Posted by painrace
To each his own. I am simply expressing thirty plus years of racing experience. If you are going to drive the car on the street slowly like most Corvette owners you need not be too concerned. If you want the best performance possible, let the new car settle in then align it after.
Don't get me wrong, up until I saw it for myself in April I always believed there was some settling that would happen over say... a few hundred miles. I've driven lowered vehicles since 1988. Cut coil springs, de-arched leaf springs, any changes in shock length, etc, the trucks would settle for a month.

As for my C5, it seems that a trip around the hood and some left/right wheel jerks was all that was needed. Never changed over a thousand miles since that spin around the hood.

Maybe someone could do some testing for grins. Lower it, drive it around the block, measure it. Drive for a mile, measure it. Drive for 10 miles, measure it. Any changes?
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Old 12-11-2006, 07:52 PM   #8
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Quote:
Originally Posted by Patrick
Don't get me wrong, up until I saw it for myself in April I always believed there was some settling that would happen over say... a few hundred miles. I've driven lowered vehicles since 1988. Cut coil springs, de-arched leaf springs, any changes in shock length, etc, the trucks would settle for a month.

As for my C5, it seems that a trip around the hood and some left/right wheel jerks was all that was needed. Never changed over a thousand miles since that spin around the hood.

Maybe someone could do some testing for grins. Lower it, drive it around the block, measure it. Drive for a mile, measure it. Drive for 10 miles, measure it. Any changes?
I don't need to do it any more. I have done hundreds. I am convienced car settle and wear. You will have to align it in the future even if you don't drive it hard or hit anything. GM aligns the car satisfactory for street driving and tire wear. They are not aligned for performance driving. When suspension changes are made, alignments must be made.

Good Luck!
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Old 12-11-2006, 08:09 PM   #9
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Quote:
Originally Posted by painrace
They all are out of alignment. That is why you can get a free alignment within the first year or 7,500 miles.
Really? I've never heard this.
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Old 12-12-2006, 10:06 PM   #10
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You live in California

Yes you should recheck the aligment, as you live in Corona I will just drive to Dick Guldstrand in Burbank. No computer aligment but just to go old way.
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Old 12-13-2006, 06:32 AM   #11
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Get the aligment done. It will be out of wack.
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Old 12-13-2006, 06:44 AM   #12
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I would advise everyone to get an alignment by a shop with the Lasers. I have mine aligned by a Ruf shop and the difference the first alignment made was astounding. In my drive way after the alignment the car coasted/rolled so much easier and on the road a lot of the Z51 bump steer went away.

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Old 12-13-2006, 07:32 AM   #13
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Quote:
Originally Posted by midnite902 View Post
I I have mine aligned by a Ruf shop
Are you talking about the Ruf as in Alouis Ruf, as in Yellow Bird! You must be since theyre in Dallas. I bet they actually knew what they were doing!
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Old 12-13-2006, 10:29 AM   #14
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To tell you the truth, unfortunatly this car will never see a race track. You know the saying "rubb'n is race'n" well I can't afford to rubb anything on this car but wax. i am more concerned with tire ware. I would hate to eat these things up too soon.
FYI measured from top of rim to fender lip stock 5 1/2", changed to 4 5/8"
after 60 miles still 4 5/8"
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Old 12-15-2006, 10:40 PM   #15
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I've lowered most of my Vettes. Even a 1/2-3/4" drop changes camber and toe-in, just try it when the car is on the alignment rack and see for yourself. You can align it as soon as you lower it, a quick drive is plenty. No more settling will occur unless the car is pretty new.
Ever notice how all the new Corvettes at the plant sit so high? The factory alignment job tries to compensate for the settling that will occur over the first few hundred miles (shipping on transport trucks helps too).
I try to wait a couple thousand miles before lowering a new Corvette; I've never observed any further settling.
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