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The BMW Range
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Tyre Allignment
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<blockquote data-quote="alantiong" data-source="post: 681149" data-attributes="member: 19754"><p>it makes me giggle when i started to read the post and "recommendation" here. things like "dont do camber... align front only.. blah blah blah.." the best one.. adjusting the steering wheels.</p><p></p><p>there is three thing in wheel alignments : 1 toe, 2 camber and 3 thrust angle. </p><p></p><p>toe is the horizontal angle of tyres facing front. either toe out or in. out meaning either pointing inwards or out. i always make sure my front tires are 0-0, meaning both totally parallel pointing front or a little toe in. but both must of the balance to create 0 thrust angle. for rear tyres, i am always toe in by about 4-5mm. makes a huge different at high speed.</p><p></p><p>amber angle is the vertical angle of the tyres at rest. negative angle meaning leaning inward and positive is out. this angle do not contribute much to drive line (whether the car run straight or not. most tyreman will give you their theory but they didnt go to alignment school) . camber contributes to cornering grip. and most car today has something called progressive camber. i will run most of my tyres a little negative camber just because i am an aggressive driver. otherwise 0deg or even a little positive is ok.</p><p></p><p>now.. the fun part.. thrust.. if you manage to get the front to be 0-0, then the whole deal about the car pushing off to the right or left when u lift our hand off the steering is down to the total thrust angle of your rear wheels. you need an one hour teh tarik seission with me to learn this. but after you know the basic, no tyreman can bull shit you and you can correct any kind of alignment issue you will ever have.</p><p></p><p></p><p>most people (tyreman) only look at 1 and 2. which in general.. sufficient.. but to me is not complete.</p></blockquote><p></p>
[QUOTE="alantiong, post: 681149, member: 19754"] it makes me giggle when i started to read the post and "recommendation" here. things like "dont do camber... align front only.. blah blah blah.." the best one.. adjusting the steering wheels. there is three thing in wheel alignments : 1 toe, 2 camber and 3 thrust angle. toe is the horizontal angle of tyres facing front. either toe out or in. out meaning either pointing inwards or out. i always make sure my front tires are 0-0, meaning both totally parallel pointing front or a little toe in. but both must of the balance to create 0 thrust angle. for rear tyres, i am always toe in by about 4-5mm. makes a huge different at high speed. amber angle is the vertical angle of the tyres at rest. negative angle meaning leaning inward and positive is out. this angle do not contribute much to drive line (whether the car run straight or not. most tyreman will give you their theory but they didnt go to alignment school) . camber contributes to cornering grip. and most car today has something called progressive camber. i will run most of my tyres a little negative camber just because i am an aggressive driver. otherwise 0deg or even a little positive is ok. now.. the fun part.. thrust.. if you manage to get the front to be 0-0, then the whole deal about the car pushing off to the right or left when u lift our hand off the steering is down to the total thrust angle of your rear wheels. you need an one hour teh tarik seission with me to learn this. but after you know the basic, no tyreman can bull shit you and you can correct any kind of alignment issue you will ever have. most people (tyreman) only look at 1 and 2. which in general.. sufficient.. but to me is not complete. [/QUOTE]
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