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 [Alignment Guide/General Discussion], How to interpret wheel alignment number?

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therain01
post Apr 27 2021, 11:48 PM

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QUOTE(zeng @ Apr 23 2021, 08:28 PM)

Edit:Do your previous worn out front tyres show higher wear rates at the inside edges of the tyres, if you can remember? Of course your driving style matters a lot.
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I'm fact the outside seems to have slightly more wear than the inside.

TSzeng
post Apr 30 2021, 08:34 PM

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QUOTE(therain01 @ Apr 27 2021, 11:42 PM)
Frankly speaking I can't really remember as the alignment seems fine all the while. It does not really pull to one side.

I believe a slight camber imbalance would not cause the car to pull. It's the tyre, bush and fittings that cause the pull.
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Agree with you a slight camber imbalance may not cause a car pulling oneside.

In fact some cars do provide spec range of ±00°30' as acceptable difference between LF and RF camber angles.

Having said this, feedback from Peugeot thread does suggest pulling left was a problem for KL's Peugeots, but that was probably way back in early 2010's.

Could it be Peugeot Malaysia (or dealers) may have rectified this pulling left phenomenon in a recent year or two?

This post has been edited by zeng: Apr 30 2021, 08:35 PM
TSzeng
post Apr 30 2021, 08:51 PM

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QUOTE(therain01 @ Apr 27 2021, 11:48 PM)
I'm fact the outside seems to have slightly more wear than the inside.
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I asked about inner edge wear because of the huge amount of toe outs recommended by factory.
You seem to have no such huge toe out thing with more wear on outside edge.
TSzeng
post May 5 2021, 10:19 AM

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Over-steer and Under-steer problems and its adjustments :

Attached Image

Source: Automobile handling, Wikipedia

This post has been edited by zeng: Oct 25 2021, 12:41 PM
6UE5T
post May 5 2021, 07:47 PM

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QUOTE(zeng @ May 5 2021, 10:19 AM)
Over-steer and Under-steer problems and its adjustments :

Attached Image

Source
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In summary, make the axle that lose traction softer to increase grip/the axle that has too much grip stiffer to reduce grip.
Zaire.Ver
post May 28 2021, 04:47 PM

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i just leave it the shop they more expert do it everyday
but if they start to talk shit need to add chamber nut or what shit...i wud just walk off
TSzeng
post Jun 3 2021, 02:07 PM

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QUOTE(Zaire.Ver @ May 28 2021, 04:47 PM)
i just leave it the shop they more expert do it everyday
but if they start to talk shit need to add chamber nut or what shit...i wud just walk off
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One may be surprised that the use of camber/eccentric bolts in most modern vehicles is indeed genuine.

Attached Image

This post has been edited by zeng: Jun 3 2021, 02:08 PM
TSzeng
post Jun 4 2021, 01:05 PM

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Interesting ....
that a brand new BMW 2020 M4 Sedan(?) Coupe at 64 miles (100 km or 64 miles) has
out-of-specification Toe and Camber alignment angles ............

Attached Image

Why and how could it be ?

Source

This post has been edited by zeng: Aug 7 2021, 10:17 AM
ktek
post Jun 9 2021, 03:29 PM

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wow steering pun miss center
TSzeng
post Jun 10 2021, 10:01 AM

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QUOTE(ktek @ Jun 9 2021, 03:29 PM)
wow steering pun miss center
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Concur with you the steering wheel is likely off-centre, possibly pointing right(?) if I may add.
IIRC, a thead respondent inferred this 64 mile M4 before current alignment could be pulling right during straight ahead driving.
However the owner was complaining about out-of-spec alignment in this new car and its non-adjustable Front camber unless parts are replaced.

This post has been edited by zeng: Jun 10 2021, 10:31 AM
TSzeng
post Jun 19 2021, 12:08 PM

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QUOTE(zeng @ Jun 4 2021, 01:05 PM)
Interesting ....
that a brand new BMW 2020 M4 Sedan(?) Coupe at 64 miles (100 km) has
out-of-specification Toe and Camber alignment angles ............

Attached Image

Why and how could it be ?

Source
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Summary of alignment specifications for:

2015-2020 BMW F82/F83 M4 Coupe 20 inch Wheel (Modified Specification);

Front
Camber Minimum -2.00° Maximum -1.00° Preferred -1.50° Tolerance ±0.50° ;
Toes Minimum -0.02° Maximum +0.18° Preferred +0.08° Tolerance ±0.10° ;
TotToe Minimum -0.03° Maximum +0.37° Preferred +0.17° Tolerance ±0.20° ;
SteerA Minimum -0.05° Maximum +0.05° Preferred +0.00° Tolerance ±0.05° ;


Rear
Camber Minimum -2.00° Maximum -1.40° Preferred -1.70° Tolerance ±0.30° ;
Toes Minimum +0.01° Maximum +0.21° Preferred +0.11° Tolerance ±0.10° ;
TotToe Minimum +0.02° Maximum +0.42° Preferred +0.22° Tolerance ±0.20° ;
ThrustA Minimum -0.17° Maximum +0.17° Preferred +0.00° Tolerance ±0.17° ;

This post has been edited by zeng: Jun 19 2021, 12:19 PM
TSzeng
post Jul 10 2021, 11:02 AM

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Hi,

Steps and interpretation of wheel alignment angles by a retired alignment business owner (Australia)

Go to Reply #6 of this thread ...

Attached Image

... on How to align a Mercedes Benz 280 SE W116 with Air Suspension.

It is nice and good he did measure the Rear camber and toe angles, but only adjusted Front Caster, camber and toe.

Question: Did Carl make a mistake in the final (Front) adjustment?

Note: 2-wheel front alignment vs thrust line alignment vs 4-wheel alignment.

This post has been edited by zeng: Jul 10 2021, 11:16 AM
TSzeng
post Jul 21 2021, 01:10 PM

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QUOTE(zeng @ Jan 12 2021, 01:48 PM)
Update :

Redo/readjust (foc) Front wheel alignment to :

Camber :
LF -0°20' (from +0°15') ;RF -0°15' (from -0°15')  ;

Toes :
LF +0°07' (from 0°00') ; RF +0°05' (from 0°00') .

Tyre pressure : remains same at 40 psi all round .

(Note :Sorry, miss to take pictures on computer screen . The tyreman flips the screen too fast .)

Pulling left phenomenon still remains , but much improved and better than before .  sweat.gif

Instead of swerving to fully occupying left lane in about 6-7 seconds after hands off steering wheel previously  , it takes a longer time now at around 10-12 seconds at 90 km/hr ....
but it is still obvious .

But now unfortunately one new problem crops out . Previously steering wheel is straight when driving straight ahead , but now steering wheel is leaning to right when driving straight ahead . rclxub.gif  rclxub.gif  rclxub.gif

Any comments , folks ?
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Update, 6 months later.

By March 2021, I dropped Front tyres to 37 psi from 40 psi. Rear pressure remains the same at 40 psi. There is no perceptible improvement in vehicle drifting left problem (with both hands off ) and steering wheel is still pointing slightly (towards) right when driving straight ahead.

Front tyres were not swapped left right as a possible 'solution' till todate as suggested by some above, yet.

Note:In February 2021, on closer inspection outer edges of both front tyres had worn more than inner edges with RF outer edge slight more severe ..........I believe most likely this has been happening all along well before the Dec 2020 wheel alignment.

By July 2021 today, there is an improvement in steering wheel seems no longer pointing (towards) right like previously but pointing quite straight ahead.

Has conicity/wear pattern of front tyres improved substantially enough (post alignment) to make me feel better currently ?

However, vehicle drifting left problem (with hands off the steering wheel) remains the same.

Note: Someone(s) has/have suggested above this drifting left problem could be caused by 'unknown' Rear toes which was not 'measured or displayed' in December 2020 alignment readings and he/they could all be right afterall..........
hence the requirement for a more 'complete' Thrust Line Alignment (generally lacking in local alignment industry) instead of the incomplete Front End Alignment broadly adopted locally.

Of late I realise turning right seems to be harder than turning left in relative terms. It requires quite a bit of steering effort to do turning.

Not sure if this has anything to do with reduced Front pressures of 37 psi, or other unknown causes like too high a Front total toes of +12' left and right ?

This post has been edited by zeng: Jul 21 2021, 01:40 PM
TSzeng
post Jul 26 2021, 01:48 PM

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Sharing another differrent alignment specs (from Version 1.0) for an Avanza F601 from an Indonesia blog :

Attached Image
Attached Image

Summary of F601 Ver 2.0 alignment specifications -

Front
Toes Minimum -00°12' Maximum +00°12' Preferred +00°00' Tolerance ±00°12' ;

Camber Minimum -01°15' Maximum +00°15' Preferred -00°30' Tolerance ±00°45' ;

Caster Minimum +03°34' Maximum +05°34' Preferred +04°34' Tolerance ±01°00' ;

SAI Minimum +11°25' Maximum +13°25' Preferred +12°25' Tolerance ±01°00' ;


Rear - N/A.

rclxub.gif rclxub.gif rclxub.gif

Note:
Previous Ver 1.0 specs Preferred Camber is +00°30' vs -00°30' here.

This post has been edited by zeng: Aug 2 2021, 11:53 AM
billychong930518
post Aug 5 2021, 10:22 PM

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Hi guys,

wanna ask do you have any recommended trusted tyre shop to do balancing/alignment in Mahkota Cheras/C180 area without need of changing charmber?

My car is Proton Saga VVT version
TSzeng
post Aug 6 2021, 12:15 PM

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QUOTE(billychong930518 @ Aug 5 2021, 10:22 PM)
Hi guys,

wanna ask do you have any recommended trusted tyre shop to do balancing/alignment in Mahkota Cheras/C180 area without need of changing charmber?

My car is Proton Saga VVT version
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Hi Bro,

Am I right to deduce Proton Saga VVT version stock does not come with Front adjustable camber bolts, anyone ?

If yes, then all alignment shops can't adjust and correct/rectify Saga VVT front camber angles (if and when they are out of factory specifications) until and unless an after-market Front eccentric bolts set are installed, on a typical Front MacPherson Strut suspension.

I installed after-market Front eccentric camber bolts on my 2007 Avanza (whose Front cambers are non-adjustable at stock) .

This eccentric camber bolts installation and its adjustment improves my general driving experience tremendously (yes, from a boxy Avanza) and better ensure longevity of tyre lifes imo.

Proper adjustment of camber angles (and toe angles for that matter) is definitely a plus, question being does your car need one at the moment .....
but a time will come in days to come unless one ceases driving a car.

First off, try have a look at this Ho Tang Kee from Kajang .

This shop was mentioned/recommended by a lowyat forum member here and see if it is of help to you. Do let us know in this thread whether they do computer 2D or 3D wheel alignment and its pricing/service/quality level, if you ever pay them a visit .

Alternatively nearer to Bandar Mahkota is this Ah Man Tyre Centre (ML) Sdn Bhd Balakong said to be opposite Jusco Balakong .

However another lowyat forum thread here suggests they were using 'manual' and non-computer method.
Do they use computer alignment today? IDK.
Do update us whether they have computer alignment todate and their pricing/service/quality levels if you happen to visit them.

In any computer alignment shop one is visiting, first make a request for a print-out for Before and After alignment settings (that includes Rear camber and toes), never mind it may not be adjustable stock and maybe take pictures of alignment settings (maybe with permission granted by shop) and upload the results for us to learn/troubleshoot or evaluate the quality and workmanshop/finishing of the shop in question as a reference for other readers here. Yes, I believe a complete alignment results print-out can help other readers in assessing/determining the 'standard' of the Shop.
Meanwhile this can help me in building up a data base on factory Preferred alignment angles (on Post #1) of our cars here and also increase or improve our knowledge base on anything Wheel Alignment which almost all car drivers 'suffer' from.

The sad truth about driver complaints across the world whether in Malaysia or overseas is majority of car owners, with valid basis seem to find wheel alignment jobs done on their respective cars and its 'workmanship and finishings' as generally 'lacking' , unsatisfactory and anger the owners often times, as I understood them from among the alignment threads I have read about thus far.

Edit: IIRC, there is a shop in Salak South that uses 'manual' method and a very famous alignment shop along Jalan Klang Lama that uses computer alignment method. I have to do some search, if there is a need.

This post has been edited by zeng: Oct 9 2021, 07:05 AM
TSzeng
post Aug 21 2021, 11:45 AM

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QUOTE(billychong930518 @ Aug 5 2021, 10:22 PM)
Hi guys,

wanna ask do you have any recommended trusted tyre shop to do balancing/alignment in Mahkota Cheras/C180 area without need of changing charmber?

My car is Proton Saga VVT version
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QUOTE(zeng @ Aug 6 2021, 12:15 PM)
Edit: IIRC, there is a shop in Salak South that uses 'manual' method and a very famous alignment shop along Jalan Klang Lama that uses computer alignment method. I have to do some search, if there is a need.
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It is Syarikat Kee Hin - Tyreplus along Jalan Klang Lama on your Left after passing by a BHP petrol station (PJ bound from KL city centre).

@ceo684 has good remarks/experience with Kee Hin's alignment results.

This post has been edited by zeng: Aug 21 2021, 11:50 AM
DanialTan1990
post Aug 24 2021, 09:09 PM

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Any recommended tyre shop with no chamber bent scam?
speedy3210
post Aug 24 2021, 10:02 PM

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QUOTE(DanialTan1990 @ Aug 24 2021, 09:09 PM)
Any recommended tyre shop with no chamber bent scam?
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Where are you located? No point people recommend to you someplace in Klang Valley when you are in Sabah, for example.
DanialTan1990
post Aug 25 2021, 12:44 PM

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QUOTE(speedy3210 @ Aug 24 2021, 10:02 PM)
Where are you located? No point people recommend to you someplace in Klang Valley when you are in Sabah, for example.
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Sorry forgot to tell.

Subang Jaya

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