Bad stability

[james.g]

Sorry james g for the late reply been in the hospital. car behaves at a Constant speed in a straight line rear of car feels like its wobbling about on smooth road, on bumpy road its front and back wobbling about.

Accelerating in a straight line and Braking in a straight line
the car is not bad just wobbling about.

Entering a corner at constant speed right hand car dose not follow the bend well left hand bends it ok.

Entering a corner whilst still braking
as above

Exiting a corner and accelerating
not to bad as long as you don't give it to much gas

The difference in the feel of the stability when cornering smoothly at low speed is wobbly and high speed its not bad.

understeers only at mid corner

OK, interesting.

If it's stable into a corner at high speed this inducates your rear tracking is OK.

If you have uneven handling left to right you first off need to eliminate the possibility of misalignment of your front subframe - this will affect camber and caster between L & R. Wheel alignment WONT detect this.
If you can confirm this is within tolerance, you may have a mismatch in your damper settings - or the Fr LH one is failed (damaged seal rather than failure due to age etc)

Thing is, a failed damper should show whan braking in a straight line as tending to pull to the side when you run over surface or camber changes

Low speed instability could equally be front / rear spring rate wrong, damper settings too hard or corner weights out.

I suggest you get the sub frame alignment checked then the corner weights.

Report back and we can go from there.

James

 

[dannychapman10]

Right, here is a new one for you guys,

Last Sunday i travelled from Lincolnshire to Devon, which means driving on the awful stretch of the M42 I think it is, since then, my car has been very reluctant to turn into a right hand bend at speed, both tyres are at 32psi and they're 18" Khumos on the front, both are new.
Also, the rear end of the car suddenly feels like it's not even attached to the rest of the car, it feels like it skipping along the road, like there is no stablilty at all :S
It's getting me worried now, it just doesnt feel stable at all, braking and accelerating in a straight line are fine as is in a corner, it just feels like it doesnt want to turn into a right hand bend and doesnt feel safe either, like the whole car is just going to spin out. I've got a drive back on Sunday, 5 hours roughly and i don't know if it's just me, but it isn't a nice feeling

Anyone?
Danny.

 

[robdf2]

you not alone mate , i have no confidence in my handling or stability whatso ever.

 

[robjnr]

Have you both had your alignment checked? Evan the slightest of pot holes can alter things,

 

[Bedlam]

Danny I had this on a Land Rover Freelander, it ws very unnerving .............get a 4 Wheel Alignment done

 

[dannychapman10]

Right, after going for a spirited drive this morning, the car still felt the same although i noticed after abit of rain, the back end was losing itself quite easily.
I got home, checked all the wheel nuts were tight to eliminate that, then checked the tyre pressures.
I had 2 new tyres put on the front the week before i drove down to Devon and woah! all of my tyres were at near enough 36-7psi!, massively over inflated, and yes, i have checked them after they cooled down, so when the tyres got warm, they were running nearly 40psi.
So, seen as it's only me in the car most of the time and the odd passenger, I took the rears down to 28psi and the fronts to 32psi as I think thats what they should be, i'll be going out again tonight to check the pressures are correct to make sure the wheels had properly cooled down and i'll take the car for a spin and see what happens

Danny.

 

[Bedlam]

The pressures are shown on a label under your fuel flap, 28 (Rear) and 32 (Front) are correct though
There was a thread on here a while back about whether new tyres should go on front or rear.............try a search,
I think the consensus was rear not front

 

[dannychapman10]

The pressures are shown on a label under your fuel flap, 28 (Rear) and 32 (Front) are correct though
There was a thread on here a while back about whether new tyres should go on front or rear.............try a search,
I think the consensus was rear not front

Yeah. I read it the fronts were on the legal limit so had to be changed, the rears still have a good 5-6mm on them, I just rang a local place in Exeter for 4 wheel alignment and they wanted £50, does that sound right to you? It seems high to me considering I had the fronts done last year and that was about £15 I think?

Danny.

 

[Bedlam]

£50 is about average BUT make sure it INCLUDES ALL adjustments required as rusted bolts can consume their time.

Also make sure it is laser equipment and that they use the correct settings for your vehicle (my place did not 1st time round)

This thread http://www.seatcupra.net/forums/showthread.php?t=209628 may be of interest (note some settings are MM not Minutes and Degrees)

Also don't be fobbed off that the REAR CAMBER is not adjustable, it is

 

[dannychapman10]

Thanks a lot for your time Bedlam
I'll get it done I think, I'll ring round a few places to see what's what, and hopefully get it done before I go back up north on Sunday.
thanks again

Danny.

 

[150cupra]

Ever get to the bottom of this lads

Sent from my SM-N910F using Tapatalk

 

[leon13]

Hi car was still the same changed the tyres last year to Bridgestone from Pirelli handling a lot better this year had the clutch replaced car totally different drive, so may be having the battery off for a couple of day sorted it out, must be a computer problem ? with the stability program may be .