QP V Sport GTS - Back end ‘wiggles’ when lifting off after hard acceleration

[Harvey_Tim]

Hi All

I have noticed that my 2008 Pre-facelift QP V Sport GTS (this has Bilstein suspension not Skyhooks) has a tendency for the back end to give a bit of a “wiggle” (I don’t know how else to describe it) when you abruptly lift off after very hard acceleration - it doesn’t feel excessive or dangerous but I am a little surprised by it.

Is this just a characteristic of the car with 2 tonnes shifting its weight around or is it indicative of a problem?

The car is in a local (non specialist) garage today just to have the straight pipes swopped back to the original silencers, so I have asked them just to have a quick check of the rear end to see if there is any play in the bushes etc.

Also the rear tyres are both low (just legal) and are old - could this contribute to this odd handling?

Many thanks,
Tim

 

[Tallman]

I haven’t noticed any wiggles on mine but I might not have abruptly lifted, I’ll give it a try next time. First thing to check is state of tyres (ie age related cracking, any other problems), then tyre pressure, then alignment and then more structural suspension items like bushes/shocks.

 

[Harvey_Tim]

Thanks Tallman

Hopefully will be the tyres then, when the car was inspected Shiltech noted that both rears were low and cracked - I have 2 new ones waiting to be fitted so fingers crossed that resolves it.

 

[Ebenezer]

No wiggling from my rear end either...
Eb

 

[Tallman]

Also helps to have the same brand/type tyre front and rear and to stick to recommended tyre sizes for the rims you have.

 

[MarkMas]

No wiggling from my rear end either...
Eb

And what about...
Nah, I'll leave it.

 

[MarkMas]

A wiggle is pretty common with QPVs at speed it seems, especially when crossing over painted lines or changes of road surface. I'd like to think it is 'excessive' grip suddenly giving way a little, rather than a problem with suspension, tyres or set up. But it is unnerving

I have found it much worse with Pirelli PZeros.

 

[Hurricane52]

I noticed this once and thought it might be the road surface. Turned out to be a cracked spring. Ended up having all four replaced. Worth checking just in case.

 

[Harvey_Tim]

Thanks for all the replies. My local garage (non specialist) checked out all the suspension and bushes and could find no play or anything and the mechanic believes it is due to the rear tyres being (in his words) “completely shot”.

Interestingly re. MarkMas comment my car is on Pirelli PZero’s. I have 2 part worn 6mm replacement PZero‘s to put on which hopefully will improve if not fix things.

On a separate note replacing the straight pipes with the original silencers has transformed the car, my god what a difference!

Thanks all,
Tim

ps. I have some QP V straight pipes for sale if anyone is interested !

 

[Phil H]

Hi All

I have noticed that my 2008 Pre-facelift QP V Sport GTS (this has Bilstein suspension not Skyhooks) has a tendency for the back end to give a bit of a “wiggle” (I don’t know how else to describe it) when you abruptly lift off after very hard acceleration - it doesn’t feel excessive or dangerous but I am a little surprised by it.

Is this just a characteristic of the car with 2 tonnes shifting its weight around or is it indicative of a problem?

The car is in a local (non specialist) garage today just to have the straight pipes swopped back to the original silencers, so I have asked them just to have a quick check of the rear end to see if there is any play in the bushes etc.

Also the rear tyres are both low (just legal) and are old - could this contribute to this odd handling?

Many thanks,
Tim

You won't notice it if you don't lift off!

 

[Harvey_Tim]

 

[MarkMas]

Thanks for all the replies. My local garage (non specialist) checked out all the suspension and bushes and could find no play or anything and the mechanic believes it is due to the rear tyres being (in his words) “completely shot”.

Interestingly re. MarkMas comment my car is on Pirelli PZero’s. I have 2 part worn 6mm replacement PZero‘s to put on which hopefully will improve if not fix things.

On a separate note replacing the straight pipes with the original silencers has transformed the car, my god what a difference!

Thanks all,
Tim

ps. I have some QP V straight pipes for sale if anyone is interested !

PZeros are the official tyre, but many people, especially in colder countries, despise them and prefer Michelin Sport or Goodyear Eagles.

For winter, I have really liked Pirelli Sottozeros or Michelin Alpins (if I can get them).

 

[Gazcw]

Thanks for all the replies. My local garage (non specialist) checked out all the suspension and bushes and could find no play or anything and the mechanic believes it is due to the rear tyres being (in his words) “completely shot”.

Interestingly re. MarkMas comment my car is on Pirelli PZero’s. I have 2 part worn 6mm replacement PZero‘s to put on which hopefully will improve if not fix things.

On a separate note replacing the straight pipes with the original silencers has transformed the car, my god what a difference!

Thanks all,
Tim

ps. I have some QP V straight pipes for sale if anyone is interested !

It will wiggle on power off and jump and skip over everything before chucking you in a ditch and kicking you in the nuts putting those on.

 

[Harvey_Tim]

Not a thumbs up for Pirelli PZero’s then?

What is recommended Michelins PS4’s ?

 

[Harvey_Tim]

Or are you saying not to put part worn tyres on?

 

[Guy]

Pilot Sports transformed my last QPV GTS. P Zeros slide a lot when cold!

 

[Gazcw]

Not a thumbs up for Pirelli PZero’s then?

What is recommended Michelins PS4’s ?

Michelins but most things are better than PZ. Had them on my QP and it would tramline horribly and jump all over the place.

 

[jebroni]

think of it like this if you’ve got a conker on a string the faster you swing it in circles it just goes faster but you’ve got hold of it so it doesn’t go anywhere. You suddenly let go & f&@k knows where it will end up ( especially if its a Pirelli conker)

 

[Harvey_Tim]

So i need a Michelin conker then ?

 

[Gazcw]

think of it like this if you’ve got a conker on a string the faster you swing it in circles it just goes faster but you’ve got hold of it so it doesn’t go anywhere. You suddenly let go & f&@k knows where it will end up ( especially if its a Pirelli conker)

And it still ends up smashing your nuts.