Often Shudder At 110km/h

[YangLIU]

Hi gents,

I got problem that my car often will shudder when i speed up to 110km/h and continue shudder if I acc to higher speed. I can feel the vibration from the seat, not from the steering wheel, i think it is rear wheel problem?

currently my car has 4 brand new rotors, 4 brand new rims with balanced and 4 good tyres (about 10000km).

anyone has idea or experience on this?

[joshm35]

Wheel balance required

[Brick]

Same size tyres front and rear?

[YangLIU]

Wheel balance required

i tried with 2 set of rims with 1 set tyres, all new balanced.

[YangLIU]

Same size tyres front and rear?

4 of same brand and same size tyres

[Hadouken]

What tyres? What wheels?

[YangLIU]

What tyres? What wheels?

aftermarket 18inch rims and 4* 245/40/18 tyres.

[66yostagea]

I would be looking at tailshaft and centre bearing also disc rotors nd CV joints.

[joshm35]

Yeah and radius bushes

[YangLIU]

I would be looking at tailshaft and centre bearing also disc rotors nd CV joints.

I actually I asked do full underneath check by my mechanic and he noticed me some problem:

1. front inner rear control arms minor tear

2. rear lower shock bush's minor cracks

3. rear upper inner middle diff bush failed and leaking

I am not sure it the shudder relates to above problem

[YangLIU]

Yeah and radius bushes

I actually I asked do full underneath check by my mechanic and he noticed me some problem:

1. front inner rear control arms minor tear

2. rear lower shock bush's minor cracks

3. rear upper inner middle diff bush failed and leaking

I am not sure it the shudder relates to above problem

[YangLIU]

I would be looking at tailshaft and centre bearing also disc rotors nd CV joints.

yeah, I read some threads here and get some points:

tailshaft

tailshaft centre bearing

uni CV joints

actually i have set of brand new disc rotors.

[niZmO_Man]

Rotate the wheels and see if that makes a difference.

[YangLIU]

Rotate the wheels and see if that makes a difference.

sure, will do it today when i have time

[Hadouken]

What brand tyres mate

[wolverine]

Rotate the wheels and see if that makes a difference.

Yep to the above or stick the thing in 2WD mode with key on pump brake pedal sequence and see if it changes anything.

[Brick]

Yep to the above or stick the thing in 2WD mode with key on pump brake pedal sequence and see if it changes anything.

Thiabis Not a c34

[Got a Pulsar]

Aftermarket Rims not centered on the Hubs or Water in the Tyres or a Bubble in a Tyre.

[YangLIU]

Aftermarket Rims not centered on the Hubs or Water in the Tyres or a Bubble in a Tyre.

I have 4 hubs adapter rings and there is no water in the tyres. i already switch the tyres between front and rear. let me see if the problem still here or not

[Daleo]

Wheel bearing, or balance.