Knocking noise when turning steering
E-Ray, 3LZ, ZER, LIFT
Joined: Sep 2007
Posts: 35,045
Likes: 12,411
From: NE South Carolina
Two somewhat funny incidents re "Chatter or Hopping" as GM refers to it:My C7 Z51 was built in September 2013. Little understanding from anyone, dealers included, about how bad it was! The first cold moring when it happed to me I wondered myself as had a C6 Z51 for 6 years with the same width tires, made that same full lock turn after backing out of the garage to go down the driveway and never any "Hopping" or significant "Chatter." In fact, felt like it might be the rear dif like my street rod, which needed posi friction modifier added.
A Forum Poster about that time said he was out to dinner with his wife and it was cold when he backed out of a parking slot and made a full lock turn. The "hopping" was so bad he got out to see what broke! His wife wanted him to pull back, take a cab home and call the dealer.
Another I consider more "serous." A young lady posted she took her friend for a ride and when she made a full lock turn, her friend, who owned a Porsche with the same width summer only tires, said "What a piece of junk!" His Porsche didn't do that! Fact is he didn't have our race car type construction, very low slip angle Michelin tires! My suggestion in the PDF that shows why it occurs and with the exact same Ackerman steering geometry it does NOT with winter and most all-season tires, states if you have a friend in the car. "DON'T MAKE A FULL LOCK TURN AND MAKE A 'K' TURN. If you don't your friend will surly tell all your others what a piece of junk you bought! Or make a copy of my PDF and put in the glove compartment so they can look at the pictures that define the issue!
Since I don't like the "feel" and still make full lock turns when warm to go down the driveway, when below 50 F after backing out of the garage I turn less and make "K" turns. Been doing that for 6 years!
Last edited by JerryU; Feb 1, 2019 at 06:53 AM.
Racer
Joined: Nov 2014
Posts: 485
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From: South Florida
Pg 22:
Tire Chatter/Hop When driving at slow speeds and in very tight turns, the vehicle may have tire chatter/hop. This condition is normal and the vehicle does not require service.
E-Ray, 3LZ, ZER, LIFT
Joined: Sep 2007
Posts: 35,045
Likes: 12,411
From: NE South Carolina
^^
They probably would IF they put on the C7s OEM tires with the same aspect ratio!
My C6 Z51 with the same width front tires as my C7 Z51 had little with the OEM Goodyears. When I replaced them with Firestone it was greater BUT not nearly as bad as C7. Others have reported the same issue with some Summer Only tires on their Porsches.
Our BMW SUV has the "performance" option with wide, summer only Continental tires but they are not as low a profile. I have driven it often at 30 F and make the same full lock turn to go down the driveway. No Chatter width those tires. But those who have switched their C7 to winter and most all-season tires say they also don't chatter and the Ackerman steering geometry is the same as when it's occurring with the OEM tires.
They probably would IF they put on the C7s OEM tires with the same aspect ratio!
My C6 Z51 with the same width front tires as my C7 Z51 had little with the OEM Goodyears. When I replaced them with Firestone it was greater BUT not nearly as bad as C7. Others have reported the same issue with some Summer Only tires on their Porsches.
Our BMW SUV has the "performance" option with wide, summer only Continental tires but they are not as low a profile. I have driven it often at 30 F and make the same full lock turn to go down the driveway. No Chatter width those tires. But those who have switched their C7 to winter and most all-season tires say they also don't chatter and the Ackerman steering geometry is the same as when it's occurring with the OEM tires.
Last edited by JerryU; Feb 1, 2019 at 07:43 AM.
Le Mans Master
Joined: Feb 2005
Posts: 6,918
Likes: 1,441
From: Any City USA
^^
They probably would IF they put on the C7s OEM tires with the same aspect ratio!
My C6 Z51 with the same width front tires as my C7 Z51 had little with the OEM Goodyears. When I replaced them with Firestone it was greater BUT not nearly as bad as C7. Others have reported the same issue with some Summer only tires on their Porsches.
Our BMW SUV has the "performance" option with wide summer only Continental tires but they are not as low a profile. I have driven it often at 30 F and make the same full lock turn to go down the driveway. No Chatter in those tires. But those who have switched their C7 to winter and most all-season tires say they also don't chatter.
They probably would IF they put on the C7s OEM tires with the same aspect ratio!
My C6 Z51 with the same width front tires as my C7 Z51 had little with the OEM Goodyears. When I replaced them with Firestone it was greater BUT not nearly as bad as C7. Others have reported the same issue with some Summer only tires on their Porsches.
Our BMW SUV has the "performance" option with wide summer only Continental tires but they are not as low a profile. I have driven it often at 30 F and make the same full lock turn to go down the driveway. No Chatter in those tires. But those who have switched their C7 to winter and most all-season tires say they also don't chatter.
Pro
Joined: Aug 2006
Posts: 572
Likes: 57
From: East Texas
I just got the new stingray year 2019, A8 and has on 400 mile one it. I do have little problem .
Every time I turn to the left or the right and even make u turn with slow speed then the steering would make some kind of ticking like a knocking noise, it is last about 1-5 second but specially happen when engine is cold or in the morning and at night
Pls give me some advice and I am very new member at this forum
Thank you very much
Every time I turn to the left or the right and even make u turn with slow speed then the steering would make some kind of ticking like a knocking noise, it is last about 1-5 second but specially happen when engine is cold or in the morning and at night
Pls give me some advice and I am very new member at this forum
Thank you very much
Melting Slicks
Joined: Jul 2015
Posts: 2,256
Likes: 781
From: Nashville TN
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E-Ray, 3LZ, ZER, LIFT
Joined: Sep 2007
Posts: 35,045
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From: NE South Carolina
When it's 45F or less my Z51 and now my Grand Sport fits the GM "Hopping" description. That is on concrete when I need a full lock turn to go down my driveway after back out of the garage.
Easy to turn less and make a "K" turn! When warm out, a full lock turn creates only moderate "Chatter."
Was not as bad in the Base car before they switched to all having the same size and apparently type tire.
Easy to turn less and make a "K" turn! When warm out, a full lock turn creates only moderate "Chatter."
Was not as bad in the Base car before they switched to all having the same size and apparently type tire.
Last edited by JerryU; Feb 1, 2019 at 01:08 PM.
Team Owner
Joined: Aug 2007
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From: I live my life by 2 rules. 1) Never share everything you know. 2)
St. Jude Donor '11-'12-'13, '16-'17-'18
When it's 45F or less my Z51 and now my Grand Sport fits the GM "Hopping" description. That is on concrete when I need a full lock turn to go down my driveway after back out of the garage.
Easy to turn less and make a "K" turn! When warm out, a full lock turn creates only moderate "Chatter."
Was not as bad in the Base car before they switched to all having the same size and apparently type tire.
Easy to turn less and make a "K" turn! When warm out, a full lock turn creates only moderate "Chatter."
Was not as bad in the Base car before they switched to all having the same size and apparently type tire.
It doesn't affect the path of the vehicle nor does it damage anything.....
Safety Car
Joined: Jul 2018
Posts: 4,303
Likes: 2,055
From: Margate, FL
Well the first time it happens it scares the crap out of you. I too thought my car was broken or I had just run over something. I actually got out and looked under it assuming the worse. Even after 6 months it sometimes catches me off guard especially in reverse. Did I hit something? Nah... its just the annoying tire chatter again 
E-Ray, 3LZ, ZER, LIFT
Joined: Sep 2007
Posts: 35,045
Likes: 12,411
From: NE South Carolina
^^^
When it's below ~45F, the little extra time it takes to turn the wheel less and make a "K" turn, I think about the smile on my face when I hit ~1.2 "g" around the fountain at the end of my street in warm weather!
I know it "Does No Harm" (although dragging cold tires across concrete is not "helping" tire mileage) but I don't like it!
When it's below ~45F, the little extra time it takes to turn the wheel less and make a "K" turn, I think about the smile on my face when I hit ~1.2 "g" around the fountain at the end of my street in warm weather!
I know it "Does No Harm" (although dragging cold tires across concrete is not "helping" tire mileage) but I don't like it!
Last edited by JerryU; Feb 2, 2019 at 06:04 AM.
Advanced
Joined: Jun 2018
Posts: 92
Likes: 39
From: Baltimore Maryland
I just got the new stingray year 2019, A8 and has on 400 mile one it. I do have little problem .
Every time I turn to the left or the right and even make u turn with slow speed then the steering would make some kind of ticking like a knocking noise, it is last about 1-5 second but specially happen when engine is cold or in the morning and at night
Pls give me some advice and I am very new member at this forum
Thank you very much
Every time I turn to the left or the right and even make u turn with slow speed then the steering would make some kind of ticking like a knocking noise, it is last about 1-5 second but specially happen when engine is cold or in the morning and at night
Pls give me some advice and I am very new member at this forum
Thank you very much
I had the same questions when I bought my 2019, I am a first owner as well so I freaked out! haha Anyway, you get used to it, perfectly normal! Tires grabbing and pulling, nothing is wrong at all with the car! In addition, welcome to the forum! ENJOY your new Vette!!!
Team Owner
Joined: Aug 2007
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From: I live my life by 2 rules. 1) Never share everything you know. 2)
St. Jude Donor '11-'12-'13, '16-'17-'18
Advanced
Joined: Jul 2017
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When my C7 comes out of storage in April my first stop is for A/S 3+ tires.... it didn't take me long to realize the original run flats that came with the car when I bought it at 7404 miles were not the tires for me ....lots of chunky sounds from tires until warm and no good unless you're on a track or smooth road....felt every bump in a normal road....shoot my Civic with Michelin Defenders rides smoother!.....also I got caught in an early November snow and slid all the way home.....from what I've read the 3+ is a much better all around tire for normal in town driving......thoughts? 
Last edited by Dhoehl; Feb 2, 2019 at 01:17 PM.
Team Owner
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From: I live my life by 2 rules. 1) Never share everything you know. 2)
St. Jude Donor '11-'12-'13, '16-'17-'18
the PS3+ A/S won't do much for ride or road noise so don't have overly high expectations. But they absolutely will help with traction in cold weather
Last edited by KenHorse; Feb 2, 2019 at 01:21 PM.
E-Ray, 3LZ, ZER, LIFT
Joined: Sep 2007
Posts: 35,045
Likes: 12,411
From: NE South Carolina
When below 45 F, GM's more descriptive word fits better- "Hopping!" That is when I prefer to turn the wheel less and make a "K" turn!
Last edited by JerryU; Feb 2, 2019 at 04:33 PM.