I drive a 93 sc300. I am about to replace my driver side LCA with a supra LCA due to a bad ball joint, but i do not intend on doing the same on the passenger side.

Will this affect handling in any negative way?

I already replaced the bushings on both sides, so there is no reason for me to do the passenger side.

Thanks

 

The bushings should be in about the same shape on both sides, so no, no negative effects.

 

depends on what kind of bushings are in the passenger side.

if you installed polyurethane bushings originally in both, and you swap one of the whole arms out for a supra unit with oem bushings, one side will be alot stiffer than the other.

I would suggest installing bushings that are the same type as the passenger side into the supra arms before installing them.

 

I replaced both and the difference is night and day, car handles great and alignment is on point.

 

I would strongly recommend replacing both. The Supra LCA's will slightly alter your alignment and suspension geometry, and while it is no issue at all when you replace both, it may cause bumpsteer or similar issues if you only replace one, regardless of your alignment settings.

I too replaced both front LCA's with Supra units in my old SC300 and the difference was worth each and every penny.

 

You should always replace both sides at the same time. Just replacing one side will potentially cause problems and will end up costing you more money in the end. Its kinda like only changing half of your spark plugs!

 

are the supra lca arm bushings rubber or polyurethane?

 

^^They are rubber, but made of a harder consistency than the SC rubber bushings.

 

so does that mean its still better for the lexus comfort as far as getting urethane bushings..heard urethane squeaks alot n stuff

 

Yes- for a street car. Urethane is harsh and noisy. After awhile it squeaks to the point where you can hear it driving over speed bumps. Embarrassing. PO put some in (upper and lower) and frankly I'm gonna go back to rubber the moment I need ball joints.
rjp