[Z06] Car fish tailing under acceleration
Thread Starter
Intermediate
Joined: May 2015
Posts: 42
Likes: 0
Car fish tailing under acceleration
Hey guys I've got an interesting problem that just started happening this weekend.
Under Hard acceleration (usually in 2nd gear or 3rd) the car will fish tail HARD and i have to get out of it early.. now i have noticed that it is worse on the more bumpy roads but it happens on the nice flat roads as well (sometimes). I've owned the car for a while now and have done a lot of canyon runs but haven't changed a single thing on the suspension or tire set up (lowered on stock springs and 315 potenza's in rear). Also, under acceleration through a right hand turn the rear end feels like it skips over to the outward tire then skips back over to the inward tire as i straighten out.. But only under acceleration.. if I'm turning without accelerating then it doesn't happen.
Any info guys?
Thank you
Under Hard acceleration (usually in 2nd gear or 3rd) the car will fish tail HARD and i have to get out of it early.. now i have noticed that it is worse on the more bumpy roads but it happens on the nice flat roads as well (sometimes). I've owned the car for a while now and have done a lot of canyon runs but haven't changed a single thing on the suspension or tire set up (lowered on stock springs and 315 potenza's in rear). Also, under acceleration through a right hand turn the rear end feels like it skips over to the outward tire then skips back over to the inward tire as i straighten out.. But only under acceleration.. if I'm turning without accelerating then it doesn't happen.
Any info guys?
Thank you
Thread Starter
Intermediate
Joined: May 2015
Posts: 42
Likes: 0
tires could use replacing in the next 1,000 miles, and yes I believe it's the original rear spring. I just put the car on the lift and noticed that the left rear leaf spring side is higher than the right rear leaf spring side. Not by much but you can definitely tell. Also my alignment seems to be off, the left rear tire has an angle away from the car while the right has an angle towards the car.. very weird. Here's a couple pictures for reference
Melting Slicks
Joined: Aug 2011
Posts: 2,423
Likes: 200
From: Atlanta GA
Hey guys I've got an interesting problem that just started happening this weekend.
Under Hard acceleration (usually in 2nd gear or 3rd) the car will fish tail HARD and i have to get out of it early.. now i have noticed that it is worse on the more bumpy roads but it happens on the nice flat roads as well (sometimes). I've owned the car for a while now and have done a lot of canyon runs but haven't changed a single thing on the suspension or tire set up (lowered on stock springs and 315 potenza's in rear). Also, under acceleration through a right hand turn the rear end feels like it skips over to the outward tire then skips back over to the inward tire as i straighten out.. But only under acceleration.. if I'm turning without accelerating then it doesn't happen.
Any info guys?
Thank you
Under Hard acceleration (usually in 2nd gear or 3rd) the car will fish tail HARD and i have to get out of it early.. now i have noticed that it is worse on the more bumpy roads but it happens on the nice flat roads as well (sometimes). I've owned the car for a while now and have done a lot of canyon runs but haven't changed a single thing on the suspension or tire set up (lowered on stock springs and 315 potenza's in rear). Also, under acceleration through a right hand turn the rear end feels like it skips over to the outward tire then skips back over to the inward tire as i straighten out.. But only under acceleration.. if I'm turning without accelerating then it doesn't happen.
Any info guys?
Thank you
Last edited by bikeriderga; Apr 10, 2017 at 12:16 PM.
Thread Starter
Intermediate
Joined: May 2015
Posts: 42
Likes: 0
460whp and no wheel hop just fishtaling honestly.. pretty alarming amount. I'll be ordering some pilot super sports this week hopefully that solves the problem.
Drifting
Joined: Nov 2016
Posts: 1,820
Likes: 411
From: Somewhere in the middle of Kansas
When I bought my Z last year, It had what I thought was good rubber on it, Firestone Firehawk wide ovals. I learned here on the forum how to read the date code on my tires and they were over 11 years old!! The tread was close to new as hardly any miles were put on them. Long story short, when hammered the accelerator shifting through the first three gears my azz end was all over the place. My Z is supercharged with a Magnuson on it so it is making some decent HP. When I saw how old the tires were I immediately ordered a new set of Hankooks and went to 305's on the rear and it is a completely different animal. It hooks so well now and the difference is unreal. When I removed the old tires they had longitudinal cracking down every single tread. So tires that looked like new were junk and unsafe. I would check that first.
Race Director
Joined: Sep 2005
Posts: 11,060
Likes: 291
From: Pasco WA
When new, my car would skip around on bumpy corners, and that was minimized after I got my Koni FSD shocks. Also, at your power level, a diff., and/or a trans brace would help what we all call wheel hop, but really is a drive train oscilation.
Le Mans Master
Joined: Apr 2001
Posts: 9,556
Likes: 288
From: Granbury Texas
tires could use replacing in the next 1,000 miles, and yes I believe it's the original rear spring. I just put the car on the lift and noticed that the left rear leaf spring side is higher than the right rear leaf spring side. Not by much but you can definitely tell. Also my alignment seems to be off, the left rear tire has an angle away from the car while the right has an angle towards the car.. very weird. Here's a couple pictures for reference
Last edited by 63Corvette; Apr 10, 2017 at 09:06 PM.
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Melting Slicks
Joined: Sep 2011
Posts: 2,258
Likes: 543
From: Appleton WI
Other things to consider. 1) Is your posi-traction working? Can check by doing burn out or jack one side of the rear up and try turning the wheel by hand. If it turns relatively easy, you have broken Belleville washers. 2) Check cradle bolts. 3) Check wheel bearings and suspension components.
Intermediate
Joined: Feb 2017
Posts: 47
Likes: 0
From: OCONOMOWOC Wisconsin
those tires are legally bald!!
Look at the horizontal wear bar across the tread!!!
The inside edge will have steel showing shortly!!
Look at the horizontal wear bar across the tread!!! The inside edge will have steel showing shortly!!
Last edited by 01vetteZ!; Apr 10, 2017 at 08:39 PM.
Racer
Joined: Nov 2014
Posts: 405
Likes: 34
From: Forest Hills, New York
my car was doing that right after i went to second, i would be sideways... def get new tires fixed my problem immediately.
got these on special, cheapest price on the net http://www.bbwheelsonline.com/nitto-...n#write_review
got these on special, cheapest price on the net http://www.bbwheelsonline.com/nitto-...n#write_review
Last edited by RomanNYC; Apr 10, 2017 at 09:22 PM.
Melting Slicks
Joined: Aug 2011
Posts: 2,423
Likes: 200
From: Atlanta GA
When I had Pirelli PZeros on my Z06, the things would spin in 2 and 3rd and I would get wheel hop. The Super Sports solved that issue right away!
Last edited by bikeriderga; Apr 12, 2017 at 07:26 PM.
Thread Starter
Intermediate
Joined: May 2015
Posts: 42
Likes: 0
Definitely the best car I've owned to date
Thread Starter
Intermediate
Joined: May 2015
Posts: 42
Likes: 0
Thread Starter
Intermediate
Joined: May 2015
Posts: 42
Likes: 0
Other things to consider. 1) Is your posi-traction working? Can check by doing burn out or jack one side of the rear up and try turning the wheel by hand. If it turns relatively easy, you have broken Belleville washers. 2) Check cradle bolts. 3) Check wheel bearings and suspension components.