Alignment? Or other.
04-24-2017, 10:41 PM
#31
Banned
Just got my car back from an Indy shop in town for a motor out service. No front end work. Now I notice a pretty bad steering wheel shake between 45-55 mph then it goes away and is smooth after 55. No shake at all. New rear tires installed with roadforce balance before service. Installing new fronts this week. Car does not wander to either side.
Does a motor out require an alignment after? All lugs are good and tight. Front tires are down to wear bars on inside but didn't have steering wheel shake prior to service.
Hoping during the test drive somebody didn't hit a Michigan pothole. Ugh.
Just noticed the date code on the tires are 14-08. 9 yrs old tires. Oops.
Does a motor out require an alignment after? All lugs are good and tight. Front tires are down to wear bars on inside but didn't have steering wheel shake prior to service.
Hoping during the test drive somebody didn't hit a Michigan pothole. Ugh.
Just noticed the date code on the tires are 14-08. 9 yrs old tires. Oops.
Assume the date code was referring to the new rears you just had installed, did you buy those from the indy shop that did the motor work?
04-25-2017, 03:43 AM
#32
Rennlist Member
While I've known Geo for many years and have been a beneficiary of his excellent help and advice many, many times, I disagree in this case. The reason is that the _steering wheel_ shakes. Which, in my own experience, has always associated with front wheels/tires, not rear. As in, in 100% of the cases.
Rears wheels/tires could certainly cause vibration. But it would not manifest itself through the steering wheel.
Rears wheels/tires could certainly cause vibration. But it would not manifest itself through the steering wheel.
let's do a test
tape a loaf of soap on the inside of any spoke of the rear wheel.
position it on bottom of spoke supported by the rim
drive up to 55-60mph
steering wheel is going to shake
learnt it the hard way
Looks like the OP rear alignment is off , and maybe car is driving like a crab, hypothetically ,'sideways', to a minimal extent.
At a certain speed, trajectory corrects the bias, and car will shake, thus steering wheel will shake.
I might be wrong though
04-25-2017, 05:18 PM
#33
Addict
Rennlist Member
Rennlist Member
Geo, I understand what you are saying. But in my ow experience, the steering wheel shake is something that transmits specifically through the steering rack. I have never felt the steering wheel resonate (as the OP discusses) though the steering wheel even while having blowouts of the rear tire a few times at highway speeds. The car would start to go sideways quite a bit and fishtail, but the steering wheel did not vibrate.
04-28-2017, 03:12 PM
#35
Racer
Thread Starter
I would suspect it was the tires mostly because up to 120 its smooth as glass. 30-45 has slight wobble. The car has been corner balanced so i am leary of adjusting the suspension too much.
05-09-2017, 04:13 PM
#37
Drifting
05-10-2017, 12:08 AM
#38
