Stu

I had the tires rotated many times with no improvement.

Don't know what + toe means, but if it need to be " toe in " to drive straight, thats good to know and I'll tell that to whoever does the next alignment. I didn't take to car to inexperienced shops. One was a Lexus dealer, and the others were done by independents. But I will be looking for a new place for sure - someone who will redo it until I am satisfied.

RA40

iTrader: (6)

+1 to BNR34 post, to much toe. The front toe on mine is .08 and rear is .06. Tires depending on alignment will have a stronger tramelling affect which is what you are encountering. So if you are lowered, a proper alignment is important. These shops are dialing in to much and or the tech is lazy to fine tune the initial settings.

You paid, go back and have them re-do it with less toe. It falls within spec but with some cars, they don't feel right. Problem shows up with uneven, premature tire wear and by then, the tire/s are

If you get a good alignment, don't mess with it unless it is obvious the car is pulling hard after a pot hole encounter or similar road hazard. Some tire shops "suggest" an alignment with new tires, this makes them extra $$. Don't fix what isn't broken.

User 82021

Negative toe is toe out, positive toe is toe in.

Sango

iTrader: (10)

Looks like you have gone to a shop to an alignment tech that doesn't know what they are doing - probably just lining up the lights green, good!

Looking at the readouts, they did not try to even balance the cambers. Since I'm not familiar with LS (being on 2IS side), it may not be adjustable such that it may require the use of adjusting the sub-frame to correct geometry issues and therefore can correct the camber and others in the process which an experienced alignment tech would be able to do.

Here is my report on my IS for instance. Notice my numbers between left and right are mostly identical in the after compared to before? My car is brand new too.

User 82021

they didnt balance the camber on purpose, to combat road crown and caster pull.
camber pulls to which ever side is more positive, and caster pulls to which ever side is more negative.
i dont know how the roads are where you live but in arizona we have crowned roads to keep water off of our roads when it does rain.
i have no problem with his front camber. if anything his car should drift left because of camber, and right because of caster.

BNR34

iTrader: (1)

Yeah I don't know how those lame computerized machine reads, I do it the old fashion racer method with a ruler. I know what works for me and It is dead on everytime.

BNR34

iTrader: (1)

The dealer is just a business, how good the work is all depends on the tech, there are tons of incompetent morons that works at the dealer.

To all dealer's tech reading this, I said most, there are always expections to a few individuals that are extremely good.

But usually the really good mechanics just open their own shop or works at an independent shop after they learn what they need from a dealer. Dealer don't pay so good folks don't stay.

azdpac

If it has air ride, check to make sure the car is level and all the shocks are good. Sounds like the same problem I have. Just not as bad. I had it to the dealer today and found out the r/r shock is bad, which is why I am here. I'm looking for parts.

Good Luck,
Dan

Sango

iTrader: (10)

Vancouver, BC and Seattle, WA, also crowned roads as well.

A proper alignment would allow the vehicle to follow the crowns (not pulling), not combat or counter. With the unbalanced ones, on a essentially flat road, it's going to basically drift which it not suppose to. With the alignment I got, works on crowned and flats.

The same alignment tech has also balanced cambers for my other IS which now a family member has as well.

Caster I'm not sure about but I do suspect there maybe some geometry issues that may need to be addressed too to properly get it aligned.

Stu

Megan makes adjustable rear lower arms for the LS

http://meganracing.com/products/prod...=1189&catid=25

Will this help fix my car ?

User 82021

you are right, if the road is crowned the vehicle would have a natural tendency to pull right because of gravity. so you align a vehicle to have a slight left drift to compensate for it, to acquire this drift you can do it with caster or camber. the manufacturer recommends .5 degrees of cross camber (meaning one side has more than another) and .5 degree of cross caster for these reasons.

BNR34

iTrader: (1)

Is your toe bro, camber don't make the car wander.

If the toe is right, you can have camber like these and the car would still go straight:

Sango

iTrader: (10)

Hmm, I never seen manufacture's mention it, and also that the alignment spec schematic for my IS does not say that either. In terms of how vehicle drives with the way it it was aligned, it does not drift on flat surfaces.

User 82021

aside from being far off subject, a crowned road is not a flat surface.
as far as you never seeing a manufacture mention it, i am not sure you do alignments on toyota's or lexus for a living
let me refer you to a generalized service bulletin for aligning a car that pulls or drifts.
http://www.lambros.net/LexusTechInfo...SB-0174-08.pdf
enjoy!

Sango

iTrader: (10)

In my initial post, I said at my alignment tech, so no I do not work on alignments - I'm in an IT Software Engineer.

I'm mean virtually flat surface - not a road crown. There are a few places which with roads or facilities design like this. One simple one is in the dealership's service car floor - flat.

I actually asked a co-worker (who is experienced in cars, way beyond me) who drives an M3 for racing on the track - asked him a several weeks ago a similar question about driving on crowns. The answer was if I recall, was that it is not suppose to do that because if it set correctly, on a crown, it would require user input to correct the steering, not setting it such that it does not need to be corrected.

I would trust what my alignment tech does since he's known in the industry and does exotic cars such at Ferrari, Lambo, Lotus, Aston Martin as a lot of customers recommend him.