Help with symptoms....

[Big Brin]

This is not a medical question.....my DB9 appears to me to lurch to the left when accelerating and to the right when I take my foot off the pedal.....how does this happen?? Engine mount problem? The wheel alignment has been done by my AM dealer and they don't appear to agree that there is a problem any longer.....The car has no where near as much torque as my previous car which would run in a straight line regardless.....

Appreciate the assistance...

Rgds, Brin

[mikey k]

Classic rear tyre pressure imbalance

[Big Brin]

Not in this case as both the tyre pressures as just digitally checked are as near as makes no difference 2.8 bar...

[Big Brin]

For purposes of closing this thread; the solution to my car lurching upon acceleration and deceleration was found in the rear tyres. They were same make but different generations of the same brand. Replacing the older tyre to the same generation as the new one solved the problem. Lesson learned, always change tyres in pairs.

Rgds, Brin

[v8woollie]

Big Brin said:

For purposes of closing this thread; the solution to my car lurching upon acceleration and deceleration was found in the rear tyres. They were same make but different generations of the same brand. Replacing the older tyre to the same generation as the new one solved the problem. Lesson learned, always change tyres in pairs.

Rgds, Brin

Thanks Brin, that's good feedback.

[BingoBob]

Interesting. Who would have thought that would have so much effect.

[Jockman]

It would appear that Mr K was - sort of - correct

Clever chap is our Mr K

[AMDBSNick]

mikey k said:

Classic rear tyre pressure imbalance

Quite funny this one. When I had a 355 years ago I had exactly the same problem. When I called Graypaul for advice I heard the technician in the background shout "tell the tt to pump the tyres up" he was right

[mikey k]

BingoBob said:

Interesting. Who would have thought that would have so much effect.

I've ALWAYS changed both tyres on an axle at the same time, expecially on RWD cars.
One puncture in southern France cost me 430 Euros because this but at least the car handled properly and safely.