), that I rented for just this purpose.
Hi speed stability....
Thread Starter
Burning Brakes
Joined: Jun 2004
Posts: 884
Likes: 1
From: McKinney TX
Hi speed stability....
Guys/gals, I'm looking for feedback on how your car handles basically stock. My old 04Z seemed to get more stable at high speeds (and improved with lowering); the faster it went, the more stable it felt.
This car is different (07 Coupe Z51.) At higher speeds the rear end feels like it's walking around on me, and makes me rather uncomfortable. It's like too much oversteer. Dealer again says "normal" and to upgrade the rear spoiler. I'm not buying that. Also says alignment is good (had them check most obvious first.)
Ideas?
This car is different (07 Coupe Z51.) At higher speeds the rear end feels like it's walking around on me, and makes me rather uncomfortable. It's like too much oversteer. Dealer again says "normal" and to upgrade the rear spoiler. I'm not buying that. Also says alignment is good (had them check most obvious first.)
Ideas?
Last edited by t56gen3; Jul 17, 2007 at 01:07 PM.
Melting Slicks
Joined: Jun 2005
Posts: 2,858
Likes: 1
From: Burlington County NJ
can we assume high speed means above 150?
I can say that at the 1/4 mile - car seems very stable, but that was only to about 130 mph. I did have the car up to about 145 another time and it seemed stable to me, but I also dont really have anything to compare it to.
I can say that at the 1/4 mile - car seems very stable, but that was only to about 130 mph. I did have the car up to about 145 another time and it seemed stable to me, but I also dont really have anything to compare it to.
Thread Starter
Burning Brakes
Joined: Jun 2004
Posts: 884
Likes: 1
From: McKinney TX
Good question, and I figured I'd leave it vague initially so I don't have to hear about irresponsibility, etc....
My experience is really 90+, and ~120 or so is about when I get scared and back out of it. My Z06 was MUCH better at this, and improved with speed.
My car is a Z51 (shoulda mentioned that earlier.)
My experience is really 90+, and ~120 or so is about when I get scared and back out of it. My Z06 was MUCH better at this, and improved with speed.
My car is a Z51 (shoulda mentioned that earlier.)
Melting Slicks
Joined: Apr 2005
Posts: 3,418
Likes: 1
From: Chicagoland Area IL
If you look at it from a aerodynamic standpoint, the 04Z versus say 07 Z51. The 07 will have more lift do to rear glass, but with lower drag coefficient.
I've had both at speed and will agree the 04Z seems more planted, but my 07 Z51 did not concern me at 170+. To me road conditions are a large variable.
Mike
I've had both at speed and will agree the 04Z seems more planted, but my 07 Z51 did not concern me at 170+. To me road conditions are a large variable.
Mike
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Safety Car
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It is either that or you lowered your car to much or the rake is not right.
Safety Car
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Melting Slicks
Joined: Apr 2005
Posts: 3,418
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From: Chicagoland Area IL
Thread Starter
Burning Brakes
Joined: Jun 2004
Posts: 884
Likes: 1
From: McKinney TX
It's not lowered improperly or too much. Roughly 7/8" drop over stock. My Z was lowered more than this....
Thread Starter
Burning Brakes
Joined: Jun 2004
Posts: 884
Likes: 1
From: McKinney TX
Thread Starter
Burning Brakes
Joined: Jun 2004
Posts: 884
Likes: 1
From: McKinney TX
Any input on the GM PP "race" spoiler? I still think there's something else going on here......alignment or so....based on other's feedback. I'm trying to rule out the "personal preference" factor as much as possible.
Drifting
Joined: Dec 2002
Posts: 1,613
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I have been in all 4 combos at speed the best at 180mph is:
The stock C6 100% better feel at speed then the C5 Z06
(Lowering the rear only did not efect the stability.)
But my friends lowerd C6 does not feel safe feels light like the C5 IMO.
All the people at the track that have been in my car said 170 felt a lot slower they had to look at the spedo to belive we were going that fast, said it felt like we were doing 130-140 not 170
The stock C6 100% better feel at speed then the C5 Z06
(Lowering the rear only did not efect the stability.)
But my friends lowerd C6 does not feel safe feels light like the C5 IMO.
All the people at the track that have been in my car said 170 felt a lot slower they had to look at the spedo to belive we were going that fast, said it felt like we were doing 130-140 not 170
Former Vendor
Joined: Feb 2004
Posts: 9,615
Likes: 13
From: Burlington NC
I thought you were talking about your C6 was better, Sorry and thanks for the correction, glass slipper.
Randy
PS the C6 should be better at speed.
Randy
PS the C6 should be better at speed.
Last edited by Randy@DRM; Jul 17, 2007 at 04:38 PM. Reason: I can read in this hot weather