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Dragging feel / vibration under full lock
Posted: Sat Nov 21, 2009 7:56 pm
by leechaos_666
Hi guys I am getting a dragging feel when on full lock, just wondered if anyone else was getting a similar thing? It has just had a big check over by audi so i ASSUME the drc is fine. tyres are brand new as well and they are the 255/ 35 19. Im just a bit worried. thanks guys
RE: Dragging feel / vibration under full lock
Posted: Sat Nov 21, 2009 8:06 pm
by Phil3103
Nothing wrong there. A lot of big cars have a similar system. When on full lock the wheels sort of tilt sligtly to reduce the turning circle. This causes a very slight 'dragging' of the tyres but given the very slow speed (presumably given you're on full lock) it won't harm the tyres.
RE: Dragging feel / vibration under full lock
Posted: Sat Nov 21, 2009 9:08 pm
by rjkflyer
Yes, it's do do with the fact that the slight difference required between the angle of the inside tyres and outside tyres at a given steering position (Ackermann angle) is never exactly optimised and so there's a little 'drag'. Worst is at fullest lock.
Also remember we have 4WD which adds a little more 'drag' by the fact that the differential action is a little imperfect at full lock.
So, aside all that rather dull detail, it's fine...
RE: Dragging feel / vibration under full lock
Posted: Sun Nov 22, 2009 2:07 am
by Dom81
That's one of those

answers
Posted: Sun Nov 22, 2009 10:47 am
by W8PMC
Is made worse when wider profile tyres are fitted. I've 275 & this became more noticable than with the stock 255. Also made worse when cold/wet.
Posted: Sun Nov 22, 2009 11:35 am
by bye bye
Wait till the cold weather comes.......cold tyres when starting off in the morning feels like you are driving on the rims!!! I was quite concerned the first time....jumped out the car thinking my tyres had been slashed!!