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Broke
Join Date: Apr 2004
Location: California Foothills
Posts: 1,567
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Steering Wheel Shimmy
OK, firstly, this car sat for about six years. The Goodyears were flat spotted. The steering wheel would start to shimmy about 30-35 MPH, and pretty much go away around 60-65. No doubt centrifugal force. Got new tires today, and now the shimmy starts around 60, stays even up to 70-75, and it's worse. Every now and then it briefly goes away, but comes back after only a few seconds. It also seems to be worse when going slightly downhill. The car tracks pretty good, only pulling slightly to the right, and that could simply be the burm of the highway. I doubt it's wheel balancing based on my testing, so what's left? Struts? Toe? Or ????? I definitely don't want to ruin my new tires.
Thanx.
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Beer is proof that God loves us and wants us to be happy. B. Franklin 93 968 Cab 81 SC Targa (Princess) Now Residing in Denmark 1973 RS Z28 Vash will never own it! |
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08-31-2015, 09:44 AM
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Under the radar
Join Date: May 2007
Location: Fortuna, CA. On the Lost Coast near the Emerald Triangle
Posts: 7,129
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I would have the balance re-done. I have had vibrations with new tires many times. I had to have them re-balanced which fixed the problem. I have a theory about those spin balancers not doing a good job on Fuchs, but I digress.
You should also check your wheel bearings, ball joints and struts. Even brakes can cause a vibration. Wouldn't hurt to jack up your car and spin the wheels. It is not unheard of to have wheels or tires out of round. Even new ones.
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Gordon ___________________________________ '71 911 Coupe 3,0L outlawed #56 PCA Redwood Region, GGR, NASA, Speed SF Trackrash's Garage :: My Garage |
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08-31-2015, 10:03 AM
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Registered
Join Date: Dec 2009
Location: Wayne, PA
Posts: 2,010
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How about a bent wheel? I have a bent one on my DD BMW, and it is a bear to balance.
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Christopher Mahalick 1984 911 Targa, 1974 Lotus Europa TCS 2001 BMW 530i(5spd!), Ducati 900 SS/SP 2006 Kawasaki Ninja 250, 2015 Yamaha R3 1965 Suzuki k15 Hillbilly, 1975 Suzuki GT750 |
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08-31-2015, 10:04 AM
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Broke
Join Date: Apr 2004
Location: California Foothills
Posts: 1,567
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Quote:
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Beer is proof that God loves us and wants us to be happy. B. Franklin 93 968 Cab 81 SC Targa (Princess) Now Residing in Denmark 1973 RS Z28 Vash will never own it! |
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08-31-2015, 10:35 AM
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Registered
Join Date: Sep 2012
Location: Newport Beach CA
Posts: 1,873
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Alignment and/or wheel balance.
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I will use a FAF when I am dying of thirst 
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08-31-2015, 10:42 AM
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Registered
Join Date: Dec 2009
Location: Wayne, PA
Posts: 2,010
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Westy, a bent wheel could usually be fixed for under $200. It is the hassle of removing the tire, and sending it out....
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Christopher Mahalick 1984 911 Targa, 1974 Lotus Europa TCS 2001 BMW 530i(5spd!), Ducati 900 SS/SP 2006 Kawasaki Ninja 250, 2015 Yamaha R3 1965 Suzuki k15 Hillbilly, 1975 Suzuki GT750 |
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08-31-2015, 10:49 AM
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Also, try to find a place that does road force balancing.
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1987 911 Carrera |
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08-31-2015, 11:33 AM
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Broke
Join Date: Apr 2004
Location: California Foothills
Posts: 1,567
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What's road force balancing? Additionally, while it looks much nicer, they stuck the weights on the inside of the wheel.
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Beer is proof that God loves us and wants us to be happy. B. Franklin 93 968 Cab 81 SC Targa (Princess) Now Residing in Denmark 1973 RS Z28 Vash will never own it! |
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08-31-2015, 11:52 AM
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72 911 Although it is done at the moment, it will never be finished. |
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08-31-2015, 12:16 PM
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Broke
Join Date: Apr 2004
Location: California Foothills
Posts: 1,567
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Just called the tire store. Set me up for a Road Force balance tomorrow at 11:30. To be continued.............................
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Beer is proof that God loves us and wants us to be happy. B. Franklin 93 968 Cab 81 SC Targa (Princess) Now Residing in Denmark 1973 RS Z28 Vash will never own it! |
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08-31-2015, 12:28 PM
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Registered
Join Date: Nov 2002
Location: venice ca
Posts: 928
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i had a vibration issue up front for a while. it was frustrating to say the least.
these cars are sensitive to tire irregularities, seek out the hunter road force machine that has been mentioned. sometimes even though you go through all the trouble of finding that machine there will be a gorrilla working it that doesnt know how to use it, but thats another thread. what finally cured my problem were the end bushings on the steering rack that connect to the tie rods
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Jason 81 SC 97 328is 87 Jeep Comanche (RIP) |
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08-31-2015, 12:36 PM
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Broke
Join Date: Apr 2004
Location: California Foothills
Posts: 1,567
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Yp. It's an old car, and things can go splat! If the balancing doesn't take care of the problem, then we'll just have to dig into the rest. Bushings and end links would definitely be high on my list. Most likely wont be selling the car until spring, so I have time to get it right. Think I have a rotor that needs to be turned too, so I can knock it all out at once.
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Beer is proof that God loves us and wants us to be happy. B. Franklin 93 968 Cab 81 SC Targa (Princess) Now Residing in Denmark 1973 RS Z28 Vash will never own it! |
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08-31-2015, 12:41 PM
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I was having same issue and found 2 wheels were bent. Found a service that straightened the wheels for around $200 and resolved the issue.
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Matthew - drove Nurburgring with wipers on and no rain 1969 911E SOLD  2002 996 Cabrio 1995 993 Carrera 4 SOLD 2004 Land Rover Discovery II G4 Edition (Sold )
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08-31-2015, 12:45 PM
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Broke
Join Date: Apr 2004
Location: California Foothills
Posts: 1,567
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xcept this didn't happen until the new tires. The car was just sitting for the most part.
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Beer is proof that God loves us and wants us to be happy. B. Franklin 93 968 Cab 81 SC Targa (Princess) Now Residing in Denmark 1973 RS Z28 Vash will never own it! |
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08-31-2015, 12:47 PM
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A sticky caliper will also cause a shimmy. Hit the rotors with an IR thermometer after a ride and see if any seem abnormally hot.
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1976 911S MidYear Fever is alive and well. |
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08-31-2015, 12:54 PM
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Registered
Join Date: Dec 2005
Location: In a race car somewhere...
Posts: 362
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check the steering wheel column bushing too
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brant giere 2005 996 cup 1991 964 euro cup (Larbre #28- race 1987 carrera 3.2-street/de car 1962 Austin Healey 3000 |
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08-31-2015, 02:46 PM
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Broke
Join Date: Apr 2004
Location: California Foothills
Posts: 1,567
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Already did that one Oliver
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Beer is proof that God loves us and wants us to be happy. B. Franklin 93 968 Cab 81 SC Targa (Princess) Now Residing in Denmark 1973 RS Z28 Vash will never own it! |
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08-31-2015, 02:47 PM
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Broke
Join Date: Apr 2004
Location: California Foothills
Posts: 1,567
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Quote:
__________________
Beer is proof that God loves us and wants us to be happy. B. Franklin 93 968 Cab 81 SC Targa (Princess) Now Residing in Denmark 1973 RS Z28 Vash will never own it! |
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09-01-2015, 12:41 PM
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Registered
Join Date: Jan 2011
Location: Boone, NC
Posts: 124
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Had my 911 wheels balanced at two different shop, still had steering wheel shaking, after reading this post found a shop that used road force balancing, like a new car, drives great.
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09-02-2015, 08:24 AM
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Under the radar
Join Date: May 2007
Location: Fortuna, CA. On the Lost Coast near the Emerald Triangle
Posts: 7,129
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This gives some validation to my theory about "spin balancers" not doing a good job.
Something to do with Fuchs? I have had to re-balance my front wheels every time I bought new tires. Funny thing is, I have my own bubble balancer which I used to re-do the balance each time. It has fixed the problem every time. So much for high tech.
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Gordon ___________________________________ '71 911 Coupe 3,0L outlawed #56 PCA Redwood Region, GGR, NASA, Speed SF Trackrash's Garage :: My Garage |
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09-02-2015, 10:29 AM
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My Garage
1971 Porsche 911
Baja Bug
the red car
the Red car
Tobluforu
1976 Porsche 911S
