Does anyone else notice this problem?
Thread Starter
5th Gear
Joined: May 2007
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Does anyone else notice this problem?
I have an "07 C6 Coupe.
When in the stopped position and I turn the wheel all the way to the right and slowly drive the car I notice a pronounced "wheel hop".
It happens when I turn the wheel all the way to the left as well.
If anyone else has this problem it seems to me that the axle has been inadaquately designed. Your thoughts appreciated.
When in the stopped position and I turn the wheel all the way to the right and slowly drive the car I notice a pronounced "wheel hop".
It happens when I turn the wheel all the way to the left as well.
If anyone else has this problem it seems to me that the axle has been inadaquately designed. Your thoughts appreciated.
Racer
Joined: Jan 2006
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From: Ann Arbor Michigan
wheel hop
i've had this too...i wouldn't think it is the limited slip as that should be fairly independent of steering input (although maybe at extremes there could be some axle bind)...i always just figured it was the blocks on the tread of the tires biting and then slipping at high angles of steering ?
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Others have posted this due to tires being cold, tight turn and the camber of the fronts at hard turns cause the tires to hop. Sounds normal to me.
Elmer
Elmer
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From: Jacksonville Florida BWO Dayton, Cincinnati, Bloomsbury NJ, Cincinnati
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OK, we're talking about both ends of the car. I think we need clarification. Is the hop from the front or rear? I don't understand a "hop" coming from the rear. The front hop seems the more logical. Hell, it does in in my Camaro too.
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Le Mans Master
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St. Jude Donor '12-'13-'14-'15-'16-'17-'18-‘19-'20
The limited slip differential is limiting the slip.
On the extremes -- both left & right -- the different distances traveled by each wheel are relatively large. That distance differential is enough to cause the clutch plates to hold - slip - hold slip - hold - slip incrementally. That is the hopping effect you experience.
It seems normal.
On the extremes -- both left & right -- the different distances traveled by each wheel are relatively large. That distance differential is enough to cause the clutch plates to hold - slip - hold slip - hold - slip incrementally. That is the hopping effect you experience.
It seems normal.
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Drifting
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From: Royse City Texas
Isn't this related to the rear end chatter issue? I noticed it a while back, in fact the week before I had my Vette in to the dealer for the differential flush to fix rear end chatter. (Backing slowly with wheels turned sharply to either side) Has not been an issue since. Had it done one month ago yesterday.
Team Owner
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St. Jude Donor '03 thru '10, '17
eboggs is correct. Because the wheels have camber in them, and are not straight up and down, the contact patch is scrubbing the pavement as you turn the wheel. The suspension geometry is causing the the wheel / tire to move in more than one plane. You are hearing the tires scrub against the pavement. It's better to roll the car slightly, if possible, when turning the steering wheel because w/o rolling, you are in effect putting flat spots on the tires.
Le Mans Master
Joined: Dec 2004
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From: West coast CA
Yes, it's normal
I think the thread poster is talking about the front end slipping and sliding at full lock at a walking pace (U-turn scenario) -- not rear-end chatter.
It's caused by the extreme camber gain at full lock (and probably some Ackerman effect). On my '06 Z51 C6, it was worst when the F1 Supercars were new. As they wore, the effect wasn't as pronounced, and with my new F1 GS-D3s, it's also not as bad.
It's caused by the extreme camber gain at full lock (and probably some Ackerman effect). On my '06 Z51 C6, it was worst when the F1 Supercars were new. As they wore, the effect wasn't as pronounced, and with my new F1 GS-D3s, it's also not as bad.
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St. Jude Donor '06
Race Director
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I have the GY GS-2 tires and mine does this when the tires are still "cold". I notice it when I make a u-turn occasionally depending on the pavement. Had a 4x4 truck that did the same exact thing. I figured it was normal. 
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eboggs is correct. Because the wheels have camber in them, and are not straight up and down, the contact patch is scrubbing the pavement as you turn the wheel. The suspension geometry is causing the the wheel / tire to move in more than one plane. You are hearing the tires scrub against the pavement. It's better to roll the car slightly, if possible, when turning the steering wheel because w/o rolling, you are in effect putting flat spots on the tires.
Sometimes noticeable even when rolling (slowly) ... is tire scrubbing due to the camber with steering at full lock.
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Yes, it is stick-slip. It is more noticeable on some surfaces than others, but all cars with wide tires do it to some extent. At extreme steering angles, the outside edge of the tire has to turn faster than the inside edge because it is describing a larger circle. But it can't because the tire is all one piece. So the tire stretches until the stress overcomes friction and the outer edge jumps to catch up with the inner edge. Perfectly normal.