low speed turn - right or not?
01-05-2017, 01:49 PM
#1
low speed turn - right or not?
2011 GS, stock size Michelins. 14K miles - I've had it 3 weeks and have put about 500 miles on it including driving it up from Miami.
My first Corvette.
If I turn the wheels tight (close to lock) and drive slowly forward, the front tires try to 'scrub' or jump - almost like a rear locked diff. Is this normal or not? There's no pull in normal driving, no flat spots, etc. Tires are about 5K miles, and an alignment was done then.
My first Corvette.
If I turn the wheels tight (close to lock) and drive slowly forward, the front tires try to 'scrub' or jump - almost like a rear locked diff. Is this normal or not? There's no pull in normal driving, no flat spots, etc. Tires are about 5K miles, and an alignment was done then.
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dheadv8q (01-05-2017)
01-05-2017, 02:16 PM
#3
Drifting
Member Since: Nov 2013
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Yes...Seems To Be Normal
My 2007 does this too. Feels like something big got stuck on the tire and bumping as the tire goes around. Since the car is rear wheel drive it likely has to do with the angles of the two front wheels not being parallel at full turn. I do not like it and try to avoid it as I wonder if it can damage something.
01-05-2017, 02:46 PM
#5
Race Director
My 2007 does this too. Feels like something big got stuck on the tire and bumping as the tire goes around. Since the car is rear wheel drive it likely has to do with the angles of the two front wheels not being parallel at full turn. I do not like it and try to avoid it as I wonder if it can damage something.
01-05-2017, 03:26 PM
#7
Racer
I asked this a few weeks ago when I picked mine up too, and yes it's normal.
From how I understand it, the front tires are wide enough that a sharp turn causes the inside of the tire to travel less than the path of the outside of the tire. I envision it like how a "cartoony" rainbow looks. The red arc is going to be longer in distance than the Violet arc.
The center of the tire is going to be the "actual distance" traveled by your tire, which means the short arc is going to be pulled across the pavement and the outside tread is going to be pushed, causing that wobble feeling. However, I can't imagine that it will cause any stress or damage on anything as this only happens at slow speeds while making very sharp turns.
I hope that helps.
From how I understand it, the front tires are wide enough that a sharp turn causes the inside of the tire to travel less than the path of the outside of the tire. I envision it like how a "cartoony" rainbow looks. The red arc is going to be longer in distance than the Violet arc.
The center of the tire is going to be the "actual distance" traveled by your tire, which means the short arc is going to be pulled across the pavement and the outside tread is going to be pushed, causing that wobble feeling. However, I can't imagine that it will cause any stress or damage on anything as this only happens at slow speeds while making very sharp turns.
I hope that helps.
The following 2 users liked this post by needdlex:
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01-05-2017, 04:09 PM
#9
Melting Slicks
I asked this a few weeks ago when I picked mine up too, and yes it's normal.
From how I understand it, the front tires are wide enough that a sharp turn causes the inside of the tire to travel less than the path of the outside of the tire. I envision it like how a "cartoony" rainbow looks. The red arc is going to be longer in distance than the Violet arc.
The center of the tire is going to be the "actual distance" traveled by your tire, which means the short arc is going to be pulled across the pavement and the outside tread is going to be pushed, causing that wobble feeling. However, I can't imagine that it will cause any stress or damage on anything as this only happens at slow speeds while making very sharp turns.
I hope that helps.
From how I understand it, the front tires are wide enough that a sharp turn causes the inside of the tire to travel less than the path of the outside of the tire. I envision it like how a "cartoony" rainbow looks. The red arc is going to be longer in distance than the Violet arc.
The center of the tire is going to be the "actual distance" traveled by your tire, which means the short arc is going to be pulled across the pavement and the outside tread is going to be pushed, causing that wobble feeling. However, I can't imagine that it will cause any stress or damage on anything as this only happens at slow speeds while making very sharp turns.
I hope that helps.
This sounds logical to me..
01-05-2017, 09:53 PM
#11
Team Owner
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St. Jude Donor '05-'06-'07-'08-'09, '14-'15-'16-'17-'18
For a real driving adventure, make a slow-speed turn as if pulling into a parking space when the temps are cold and the pavement is wet after a good rainfall. You'll think your wheels are coming off.
I know this to be true.
I know this to be true.
01-05-2017, 10:00 PM
#12
Team Owner
I asked this a few weeks ago when I picked mine up too, and yes it's normal.
From how I understand it, the front tires are wide enough that a sharp turn causes the inside of the tire to travel less than the path of the outside of the tire. I envision it like how a "cartoony" rainbow looks. The red arc is going to be longer in distance than the Violet arc.
The center of the tire is going to be the "actual distance" traveled by your tire, which means the short arc is going to be pulled across the pavement and the outside tread is going to be pushed, causing that wobble feeling. However, I can't imagine that it will cause any stress or damage on anything as this only happens at slow speeds while making very sharp turns.
I hope that helps.
From how I understand it, the front tires are wide enough that a sharp turn causes the inside of the tire to travel less than the path of the outside of the tire. I envision it like how a "cartoony" rainbow looks. The red arc is going to be longer in distance than the Violet arc.
The center of the tire is going to be the "actual distance" traveled by your tire, which means the short arc is going to be pulled across the pavement and the outside tread is going to be pushed, causing that wobble feeling. However, I can't imagine that it will cause any stress or damage on anything as this only happens at slow speeds while making very sharp turns.
I hope that helps.
01-05-2017, 11:44 PM
#13
Team Owner
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Location: Oklahoma City OK
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C6 of Year Finalist (appearance mods) 2019
That's the nature of the beast!
01-06-2017, 07:57 AM
#14
cesssna10
I asked this a few weeks ago when I picked mine up too, and yes it's normal.
From how I understand it, the front tires are wide enough that a sharp turn causes the inside of the tire to travel less than the path of the outside of the tire. I envision it like how a "cartoony" rainbow looks. The red arc is going to be longer in distance than the Violet arc.
The center of the tire is going to be the "actual distance" traveled by your tire, which means the short arc is going to be pulled across the pavement and the outside tread is going to be pushed, causing that wobble feeling. However, I can't imagine that it will cause any stress or damage on anything as this only happens at slow speeds while making very sharp turns.
I hope that helps.
From how I understand it, the front tires are wide enough that a sharp turn causes the inside of the tire to travel less than the path of the outside of the tire. I envision it like how a "cartoony" rainbow looks. The red arc is going to be longer in distance than the Violet arc.
The center of the tire is going to be the "actual distance" traveled by your tire, which means the short arc is going to be pulled across the pavement and the outside tread is going to be pushed, causing that wobble feeling. However, I can't imagine that it will cause any stress or damage on anything as this only happens at slow speeds while making very sharp turns.
I hope that helps.
01-06-2017, 09:17 AM
#16
Race Director
01-06-2017, 02:09 PM
#17
It is normal. It's called ackerman. The ackerman is caused by a combination of the design of front steering components and alignment geometry. Really has little to do with the width of the front tire, but rather the angle of one tire versus the other front tire while turning. Years ago, the challenge on dirt track cars using stock steering components was to remove as much ackerman as possible. In todays cars, the focus is on other characteristics of the front end geometry rather than the small issue of ackerman. Some car models are worse than others while turning.
