GRANT

Fitted 2 new rear tyres today Bridgestone S02 16" and on the way home went round a very large roundabout of M25 which I know very well,and had to lift of on bend as two vans tried to rearange themselves and the back of the car stepped out.
This is something I have never had before.
Now I know that the tyres need to wear of the top coating but had already driven 150 miles today and they were warm.
Running pressure 2.2bar.
As soon as I put the power back on again it pull itself back in line.
Any one else had experience on these tyres or was it my bad driving or derv on the road either way very disconcerting.

Grant

Tim Bomford

All cars especially 4wd ones do this as when you lift off the power it unbalances the car. After a while you'll start to do it in the wet on roundabouts to get sideways It doesn't look good if you then spin it though.

GRANT

Cheers Tim,
Never had it happen in the past though, on this car (15,000) or last MY99 covered 26,000 maybee just one of those things hope it doesn't do it at the track.
G.

Andy K

I recently had the joy of using a large tarmac concentric circle test facility all to myself and Scooby Do, as did a mate with an identical car. Even in pissing rain, nothing we could do would unstick the back. Massive understeer into savage lift-off just made it tuck in nice and sensible. Power wouldn't do it. Nothing would. Probably means I'm just crap and didn't set the car up properly to induce oversteer. But we were trying for a good few hours...

Both cars MY99 UK spec with standard tyres and suspension set up.

Andy

jjones

go to

JON HUGHES

Probably a dodgy map in your Unichip
Jon

DJB

I've never had lift-off over-steer. This is one of the features of this car which I find reassuring. If I go round a corner too fast and lift the throttle a bit (out of fear), I tend to find that my line tightens a bit but never dramatically or unpredictably.

Your suggestion about oil or diesel on the road might have been correct.

D.

alistair

See

GRANT

V Funny Jon
G

SDB

jjones - you can have as much of the cost of running the site as you like m8

GRANT

A few things..
- After 150 miles, you probably still had a little bit of the greasy crap on the tyres.

- Also, tyres need to actually scrub in as well as wear the residue (sp?) off them. This can take 300 to even 500 miles, depending on the type of driving you do.

- Mixing tyres is VERY bad, what do you have on the front? I have to say that the testing (and the Wetter the Better courses) I have done at MIRA have really opened my eyes to just HOW MUCH of an effect mixing tyres has. You can take a perfectly safe car round for 20 laps without a care in the world, change 1 tyre and the car become totally unpredictable. Change 2, tyres and the same.

The problem is...
Mr Subaru and all his buddies spend millions of squids making a fabulous chassis. Colin McRae hammers it round MIRA for a month. Then takes it on the RAC and tweaks is further. They then find the PERFECT set-up. This set-up is designed to let the suspension move an exact amount based on a certain amount of forces being produced by the tyres.

If you suddenly change the forces one of them produces, you are throwing away their handling model and landing it in the lap of the gods.

- S-02s are stunningly grippy tyres. Let them scrub in and GET SOME ON THE FRONT as well, and you will be thrilled.

Cheers m8

Simon

PS. Let me know how you get on would ya?

GRANT

Simon,
S02 on the front as well about 2000 mile ago.

GRant

SDB

Hi GRANT

Presumably you had S-02s all round before then and you'll know how it handles?

Either way, the lift off oversteer was almost certainly exagerated (sp?) by the unscrubbed rear tyres.

Cheers

Simon

millband

I put 4 new S02 15" (am I the only one left on the BBS with the baby wheels?!) earlier in the year. It took a whole weekend in North Wales (about 300 miles) before the grip started to get close to the worn-out OEM tyres I had before, but it's fantastic now.

Still, at the time it was interesting getting 4-wheel drift for the first time ever...

Steve

sunilp

I have had lift off oversteer resulting in a spin on well scrubbed P Zeros many momnths ago. So what did i do wrong?

GRANT

Simon,
The last set tyres were Bridgstone 010,change to SO2 after reading report last year in Autocar.
Not very impressed have to try and scrub of a bit more and hope things improve.
Grant

DocJock

GRANT

Hang in there mate , it really is worth the wait !

DJ

SDB

Hi Sunil

It is not a case of "some tyres lift-off oversteer and some don't". In a scoob (or almost ANY car) you can create lift-off oversteer in certain situations.

It is difficult to be totally sure what you did wrong without knowing the full situation mate, but at the most basic level, you allowed to much weight to transfer onto the front wheels from the rear wheels whilst steering and didn't correct it.

Do you remember what happened before during and after?

Cheers

Simon