41 replies to this topic

[bullitA9X]

Hey guys have a 07 vxr astra with a steering wheel wobble at 90kmh drives perfect up to then...so far itz had new wheels new tyres new bilstein stuts new springs new strut bearings and strut rubbers new tie rod ends new link arms new drive shaft centre support bearing both drive shafts checked from specialist and are fine any other ideas guys???

[Rainman]

Have you tried swapping the front wheels to the back wheels ?

[S pack]

Front caliper/s sticking/not releasing properly causing the rotor to overheat and warp as speed increases?

[rodomo]

Cars are shit

[hanra]

I remember with my BMW if I didn’t give the surface rust a bit of a clean up on the mating face of the brake rotor, I used to get a wobble up around 80kph.

[bullitA9X]

Have you tried swapping the front wheels to the back wheels ?

It’s got brand new wheels and tyres mate....


  

Front caliper/s sticking/not releasing properly causing the rotor to overheat and warp as speed increases?

 

Wouldn’t there be a pulsating problem through the peddle there isn’t Dave??

 

Cars are shit

 

Ain’t that the frOcking truth

 

I remember with my BMW if I didn’t give the surface rust a bit of a clean up on the mating face of the brake rotor, I used to get a wobble up around 80kph.

Rotors are crystal clean mate....

[Rainman]

Had a mate with new tyres drop into myself one day with the same problem. We took it for a drive and it worked out to be a defective tyre. I would check the balance weights have not fallen off. I would also check the bearing for over or under tightening. But a wheel rotation is were I would start.

[RallyRed]

Rotors..meaning the bolt up part as opposed to the bit the pads run on?

Hmm...have you also tried running 50psi and then 20psi in the tyres just to see what that does?..i.e maybe push you towards dodgey tires..but youd want to be unlucky to have it with different sets.

Assuming front wheel drive...have you tried it on a dyno...just to 100% isolate it to the issue being the front?

Edited by RallyRed, 17 October 2018 - 02:28 PM.

[S pack]

Disc brake rotors are the part the pads run on, with or without an integral hub or a hat design to fit onto a wheel hub/axle.

[S pack]

Wouldn’t there be a pulsating problem through the peddle there isn’t Dave??

I expect you would get some feedback through the pedal if you lightly rest your foot against it and the shimmy would be aggressive if you applied the brakes.

Have you tried lightly applying the brakes while the steering wheel is wobbling?

 

If not the brakes causing it I would definitely consider a faulty tyre.

Edited by S pack, 17 October 2018 - 08:02 PM.

[RallyRed]

Disc brake rotors are the part the pads run on, with or without an integral hub or a hat design to fit onto a wheel hub/axle.

lol...I was trying to say....did Brad mean to get all the rust off thr mounting faces..be they onto the car, or ehere the wheel bolts up.

[Ice]

First Cortina now Astra wtf
we seriously need to have that talk Daz
next it will be a Pruis

[bullitA9X]

Rotors..meaning the bolt up part as opposed to the bit the pads run on?
Hmm...have you also tried running 50psi and then 20psi in the tyres just to see what that does?..i.e maybe push you towards dodgey tires..but youd want to be unlucky to have it with different sets.
Assuming front wheel drive...have you tried it on a dyno...just to 100% isolate it to the issue being the front?

Haven’t put it on dyno yet....

I expect you would get some feedback through the pedal if you lightly rest your foot against it and the shimmy would be aggressive if you applied the brakes.
Have you tried lightly applying the brakes while the steering wheel is wobbling?”
If not the brakes causing it I would definitely consider a faulty tyre.

Will try this tomorrow.....

First Cortina now Astra wtf
we seriously need to have that talk Daz
next it will be a Pruis

frOcking lol gene maybe I’m having a mid life crisis lol...

Edited by bullitA9X, 17 October 2018 - 10:30 PM.

[rodomo]

Cars are shit

We went through this crap on a work vehicle. VW Caddy. Ended up it was in the transmission.

[hanra]

lol...I was trying to say....did Brad mean to get all the rust off thr mounting faces..be they onto the car, or ehere the wheel bolts up.

Actually both. When I replaced the rotors, I had to sand the hub that it mounted to as it has surface rust on it. Hen every time I took the wheel off I had to give the mating face of the rotor a clean up. Seemed minor but it would always wobble if I didn’t do that.

[Rainman]

After all the new gear went on, did you get a wheel alignment ? Just the two wheels or four ? Was it set to factory settings ? On the print out, does it show the three static angles ? Camber/Caster/Thrust and Toe angle.

[bullitA9X]

We went through this crap on a work vehicle. VW Caddy. Ended up it was in the transmission.

  

frOck mate I hope it’s not that

Actually both. When I replaced the rotors, I had to sand the hub that it mounted to as it has surface rust on it. Hen every time I took the wheel off I had to give the mating face of the rotor a clean up. Seemed minor but it would always wobble if I didn’t do that.

Yeah I’m looking at brakes over the weekend

 

After all the new gear went on, did you get a wheel alignment ? Just the two wheels or four ? Was it set to factory settings ? On the print out, does it show the three static angles ? Camber/Caster/Thrust and Toe angle.

Just had it wheel aligned again mate and all is good on that side

[v6 torana]

Hey guys have a 07 vxr astra with a steering wheel wobble at 90kmh drives perfect up to then...so far itz had new wheels new tyres new bilstein stuts new springs new strut bearings and strut rubbers new tie rod ends new link arms new drive shaft centre support bearing both drive shafts checked from specialist and are fine any other ideas guys???

 

Did you have the vibration before all the above was replaced ?

[bullitA9X]

Did you have the vibration before all the above was replaced ?

Yes mate...

[Rainman]

Thought you might keep that info to yourself Daz ?? Sure its not the nut behind the wheel lol

[Rainman]

You could try finding some flat ground. Mark where your tyres are sitting on the ground. Then without touching the steering wheel, go reverse then forward several times. See if they finish on the original marks. Take it tyres pressure is even. Do you know if this car has ever been in a crash ? did the owner mention when this first started.

[bullitA9X]

You could try finding some flat ground. Mark where your tyres are sitting on the ground. Then without touching the steering wheel, go reverse then forward several times. See if they finish on the original marks. Take it tyres pressure is even. Do you know if this car has ever been in a crash ? did the owner mention when this first started.

I drove it back from Sydney 2 years ago was perfect it’s never been in an accident it’s just started doing this out of the blue 😳

[rodomo]

We put a couple of sets of drive shafts in the Caddy and it would come good for a while. If my memory is correct?????????? It was the diff carrier that was the problem? Something about it being riveted together?

[bullitA9X]

We put a couple of sets of drive shafts in the Caddy and it would come good for a while. If my memory is correct?????????? It was the diff carrier that was the problem? Something about it being riveted together?

Cheers mate I’m going to try the drive shafts if the brake thing doesn’t fix it problem is I can’t find a listing for the HSV astra there different to all the normal astras so probablyhave to get from the uk as Holden will rip me a new one lol

[caterham2]

Had a similar issue on a car once after tyres were fitted. Worth checking the indicator line as some of these tyre fitters don't know that a tyre needs to be fitted concentrically ( big word) . My problem very similar, tyres reseated by someone who didn't use a guide dog to come to work and problem fixed.