Car Rear Lifting At Speed

[crispyj]

I Have Bought A Gen 3 And The Rear Spoiler Is Missing , The Car Feels Back End Twitchy At Speed.  Is This Due To The Spoiler Missing Causing Downforce Issues.

Thanks  Crispyj

[Gman]

I wouldn\'t have thought so unless you are driving above 130mph.

[antnicuk]

unlikely,  more likely due to the bushes being worn out.

[iaint]

Dead dampers at the rear will also exhibit this kind of feeling - very unsteady, worse the quicker you go.

Replaced mine and it made the world of difference.

[B9 KLF]

Low tread on the back tyres can also be a cause. Or deflate the rears a little.

Keith

[clive]

These cars should drive arrow straight at VERY high speeds, like you were doing 50mph in yer Fiesta.

Have a good shake around the suspension and then get a four wheel geometry check done, also in the long run it will pay for itself by increasing tyre wear.

If its still doing it after the above, put a spoiler back on as god intended

[Donato]

Has it been lowered? Could be the back lower than the front causing lift...

[Initial-D]

Laser alignment will help alot, they\'d also be able to check for worn bushes and suspension probs. Of course I\'d recommend a HUGE rear GT wing owning one myself!

[crispyj]

It is lowered with Apexi adjustables all round.  The tyres are new size  265/40/17 on the rear  235/45/17 on the front.  I will get it allignment checked on tuesday.

Thanks

[Sy.]

spoiler will make no difference .. as i had a gt spoiler and did 140 mph (on privet road) and took if off and did 152mph and no difference in stickability.

[Martiny]

Yep, mostly aesthetic .

[B9 KLF]

I had this problem after new Koni shocks were fitted and the mix of tyres was different front to back.

Went to Elite in Essex for 4 wheel laser alignment and boy what a difference.

Keith