Flipsonic

Just replaced my front tires due to inner tire wear. This time I want to stretch it out for as long as possible because these tires are expensive. Been reading about camber kits in this forum and wanted to know how much the adjustable ball joints will help. My car is lowered on Eibach Pro Kit springs. About 1" in front and .75" rear.

If I install the adjustable ball joints, what should it be set to so there is minimum inner tire wear? Attached you will see my alignment specs which was taken just today. Thanks in advance.

laobo979

iTrader: (5)

What you need more than anything is this http://shopfigs.com/v1/index.php?rou...product_id=235

WylieKylie

iTrader: (2)

^I'll 2nd that. Camber isn't near as hard on your tread as toe is, and these cars are designed to change toe dynamically from the factory.

Flipsonic

So you guys are saying that this will do a better job minimizing the inner tire wear than the adjustable ball joint?

laobo979

iTrader: (5)

Yes do a search and you'll see. I know a local guy that has this on his isf and he recommends it. I just haven't had time to get one yet.

WylieKylie

iTrader: (2)

I installed these bushings in my car a couple of weeks ago, in the next couple of weeks I'll be installing camber arms front and rear and getting an alignment. I'll be adding MORE negative camber and making sure the toe is as close to 0 as they can make it. Again, toe has a much greater effect on tire wear than camber. The ~.5 degree of negative camber these cars can have from the factory WILL NOT wear the tires like what you typically see on these cars, it is the toe.

Flipsonic

Can someone explain how these bushings help minimize inner tire wear compared to the adjustable ball joints or arms? Is there a good link you can share for me to read up about this?

laobo979

iTrader: (5)

As I stated all you gotta do is hit the search button https://www.clublexus.com/forums/sus...0-duro-hp.html

Flipsonic

So if I read it correctly, these bushings are stiffer compared to the OEM ones. And because it is stiffer, it prevents toe changes while driving the car (toe deflection under braking). And because there is less toe change, less inner tire wear. Didn't even know the toe changes when the car is being driven. Maybe someone can explain that better to me. I know a little about cars but not to this depth.

WylieKylie

iTrader: (2)

You got it right. Replacing the bushing minimizes the toe change while driving the car. The toe changes while driving because Lexus designed it that way. Lexus designed it that way so that the car will understeer while braking, which they believe makes the car safer under "emergency" conditions.

FSportIS

iTrader: (13)

Ahhhh, no wonder the car understeer so much from stock and the so many IS have the inner tire wear problems.

How much should the labor be?

WylieKylie

iTrader: (2)

I dunno, depends on which version of the bushings you get. I bought the bushings insalled in the brackets and put them on myself. Took ~3hrs, and this was basically the first time I'd turned a wrench on the car.

If a shop wants to charge more than 2 hours to install the brackets I'd look elsewhere. If you buy just the bushings and the shop has to press the old bushings out and the new bushings in I'd guess 3 hours is reasonable.