marcus428

The tires are BF Goodrich g-force 225/55/16 (ZR) and I keep them at 38 lbs (any lower pressure and the steering is "mushy". The tires do have an aqua tread center so I am getting some tramling however, the problems are more evident when there is a slight change in elevation of the road (such as a dip or rise or change in the crown of the road). So far this is what I have recommened from other threads: LCA Bushings (lots of people think it is this but the mechanic said they checked out ok) Steering Rack Bushings (mechanic checked this too and said it was ok) Tires (tramlining) Alignment (we've been down this road and I can tell that the alignment is out again. What can keep pulling the alignment out?) Shocks (something about the gas portion of the shocks leaking out) So what do you think? Thanks for your help.

The Lexus dealership aligned the car twice but the car still handles weird. It still follows changes in the road and on a windy days it gets pushed all around. The Lexus dealership felt it was better to set the alignment as close as possible to the middle of each spec range and weren't sure if the settings you provided from England would work in the US. Do you know if there are optimum settings for this country (US)? Here are the settings I currently have (in degrees): Left Front Camber 0.1, Right Front Camber -0.1, Left Front Caster 2.7, Right Front Caster 3.2, Left Front Toe 0.05, Right Front Toe 0.04, Left Front SAI 8.4, Right Front SAI 8.8, Left Front Included Angle 8.5, Right Front Included Angle 8.7, Front Cross Camber 0.1, Cross Caster -0.5 and Total Toe 0.09. Rear Left Camber -0.9, Rear Right Camber -0.9, Rear Left Toe 0.20, Rear Right Toe 0.20. Rear Total Toe 0.4, and Rear Thrust Angle 0.00.

You were right. It was the 4 wheel alignment. Should have had that done when I bought the new tires. Thanks for your help!

Car has the original wheels, no aftermarkets. Why is the speed delimiter not a possiblity?

I had a front end alignment done when I got the tires installed. I took the car back and the mechanic stated the alignment was to specifications. When I drive on a straight flat road the car stays straight but any slope in the road and the car will follow it. It's like the steering is influenced by any changes in the road surface. Even a turning arrow painted on the road surface will cause the wheel to turn. I guess I'll go get a four wheel alignment and see if that fixes it. I've had people also speculate that it could be the shocks, anti-lock brakes, or variable speed power steering (does this car have one?).

I bought the car about 2 months ago and I thought it was a tire related problem. The car had Eagle GT's on the front and Continental's on the rear. I figured a new set of tires would fix the problem; but it didn't.

I have a 94 SC 400. I've had the front end aligned and put new BF Goodrich g-force tires on the car but the steering problems won't go away. When changing lanes, the car lurches into the new lane as it passes over the lane divider. And when driving on or coming to a stop on a road with a slight lean to the right, the steering wheel will pull to the right. Yet on a flat road the steering wheel remains straight. Lexus has looked at the front end and so has another mechanic. Both say everything checks out ok. However, they both agree that something is not right. Anybody else ever had a steering problem like this? Thanks,