aussie aligner
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Posts posted by aussie aligner
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Look at it logically...... Power-steering does not change the achermann angle or lock angle. If the driver is able to turn the steering assisted, dragging the tyre then why doesn't the inner wear when turning on the opposite lock? Also wear is uniform around the circumference of the tyre, how come?
agreed it does not change any angles, if you have a car without power steer you normally set the car up to turn with the vehicle rolling , example traffic lights turning left, you have the car angled to turn before stopping, light changes you accelerate in a smooth arc. with power steer you stop, wheel straight ahead lights change step on it the hammer the steering wheel.
maybe not the power steering but the laziness it causes modern drivers to develop. still its an issue
agree to disagree????? lol
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Out of interest what machine do you have and what increment of measurement do you use?
mondolfo 728, i use degrees for camber castor and mm for toe
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I fail to see how power steering wears the tyre, i've had this argument for years.... It's a myth
like brake rotors? how come this "phenomenom" doesnt exsist on cars pre power steer?
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So toe wear can look similar to camber? I thought toe was more feathered and camber smooth?
toe wear goes across the tyre side to side, camber is normally a line of wear on the inside or out.
not to be confused with front wheel drive- power steering wear which looks very similar
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That car was bought from a dealer with 30mm toe out
30mm hahahahahaa what a crack up!!!! got to work out how to convert degrees to mm!!
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"no wheel alignment machine can allow for poor chassis trueness" true but the machine can identify the poor chassis condition.
What's the average thrust measurement you find?
varys really, some older model ford falcons i.e 1973 to 1985 with watts link rear can have massive amounts of toe variance
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Below 30mph is not wheel balance. Normally this is due to a distorted tyre, a damaged wheel or your wheel is about to fall off
cant be seppo, it doesnt shake at high speeds
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The average punter is believing what "quick fit" so called pro's tell them is wrong with the steering,i have told loads of people about WIM but when you start talking about castor....k.i.p and the like it just goes straight over their heads.I have a tough time trying to educate people (with my very limited knowledge) about the affects of a proper geometry set up and the pounds they will save in tyres.
I know how you feel now Tony.
Most people in a forum are wise to the horror of fast fit purely because the destruction is so visible... Mr Average out there is not so privileged..... it's people like you that try to educate (at whatever level) that make a difference..... have a look at this.....
Both of the front tyres were worn in this fashion.....and both had only done 1500 miles from new
the owner bought the car second hand from a main dealer and returned several times insisting the drive didn't feel right..... several times he was told 'Everything is ok'.... obviously not! sad fact is the owner was at the mercy of the dealer....then WIM became involved, suddenly all costs were paid by the dealer toward new tyres and the geo.... no offer of compensation was possible because the tyres did not 'blow out' so final consequences were 'hearsay'.clear camber and toe out issue, would have to assume the camber was not adjustable from the factory...so how did you fix it?
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this is all very well and good but unfortunatley no wheel alignment machine can allow for poor chassis trueness.
in australia the majority of vechicles are rear wheel drive with no adjustment, i only do thrust alignments and 6 out 0f 10 cars will have the wheel slightly down to one side, hence proving the thrust line of the vehicle is out, not much you can do with cars that have had side impacts etc.
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The pressures were checked on Saturday and they're fine although I'll check to make sure. I didn't think it would be a balancing issue as there is no vibration. Probably just the age of the car and where the rack has worn.
really i thought it was a set up!!!
after all it say your the boss.....
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On the Escort when crusing along the steering wheel seems to wobble/kick from side to side slightly and I do mean slightly. Could this just be the tyres as I know they're mis-matched, a geo issue or steering rack?
tyre pressure, rack, balance? i would say tyre pressure
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There are two distinct versions of this that gets confused between actual and the owners explanation. Maybe this will help clarify the actual complaint.
1: My car pulls to one side with an energy i have to physically resist and in doing so my steering position is off-line.
2: My car steers to one side when i centre the steering wheel, there is no energy involved
Both examples are Geometric but the reasons are far removed as is the method for correction.... Is it a pull or a steer!
torque steer? got that a few times from unknowing customers
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They are.....
so it would of happened to any tyre. look, im no fan of rft's myself but this seems to be a little unfair to bash them
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These are remoulds...... cost around £80 each and don't even think about wheel balance on these horrors.
look like a "nicely" made remould lool
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With the power of the Internet and posts like this eventually the public will understand the misery associated with the run-flat tyre, little things like the three times the price of a conventional tyre, or the fact if punctured their scrap and that's without mentioning the poor handling....... Oh and this>
NSF
NSR
OSF
OSR
That's £1000 worth of tyres ruined.
Now i'm not suggesting there's anything wrong with BMW cars, there's not, their lovely cars and i'm not totally slating the run-flat tyre by concept but i am saying the BMW run-flat tyre and the UK roads don't go!!
All future owners need is the potholes repaired, the road crown reduced and everything will be tickety boo....... Holding of breath not recommended.
looks like impact fractures
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Vehicle BMW X5
Index 2007
Complaint
Inner rear tyre wear
History
We see many X5's with the same complaint but i don't think i've documented this before in HOTW.
The chassis
The X5 rear camber/ toe positions are unremarkable since we are talking 4X4
The problem
The problem is the RFT ( Run Flat Tyre ) these tyres cannot adopt the rear camber position suggested by BMW simply because the camber position needs to distort the tyres inner sidewall, the RFT sidewall remains the same circumference inside and out and loads the inner wall with the vehicles weight.
The evidence
The data
The data images displayed are not to distant from the BMW idyllic positions
The solution
We don't use BMW's positions, over time and research we have developed new positions that allow the contact patch to be undistorted, this stops the Tyre wear and although the camber positions are reduced it increases the grip coefficient because the contact patch is undistorted.
sorry did i miss something, no specs were changed? did you just toe it in 3mm?
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Are we talking about the causes then? Because my discs were warped when replaced (as in they had physically changed shape) so it can't be a myth if it actually happens.
The reason the discs warp can vary, but if the discs have changed shape they have warped, and therefore it can't be a myth
Must be the first recorded case then. How did you check the disc for for consistency of thickness and possible run-out, and are you assuming the discs were machined correctly initially?? If I remember correctly WIM changed your hubs, which were the root cause of the problem, not the discs.
fact...... can anyone explain how heat affects steel? then what about when super hot rotors being drastically cooled?
the only way it could happen in your logic is, if the rotors may have been removed or you were so unfortunate that a piece of debris fell behind when wheels where removed!! remember they don't make them like they used too
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i assume they are pirelli's...........nuff said
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hey guys, here in aus you must comply to your tyre placard, if it says rft then run flats are you minimum spec.
just curious how your mot works with cars, for example a hilux 20's but a placard stating c load range tyres?
Interesting Tyre Wear
in Tyres / Wheels
Posted
http://www.bridgestone.com.au/tyres/treads/GR90.aspx
one of the best tyres bridgestone has ever made!, not sure if you can get them in britain though.
we are averaging around 70000kms on these (215/60r16) no road noise comfortable as
and they are asymmetrical