I got my gs430 about 5 months now. I also have a 1999 Acura TL which planning to sell. When I drive my GS, it feels like driving my car on top of the bicyble, sometimes shift to the left and sometimes shift to the right and when I cut the land, like only half way. Comparing to my TL which very precise. I drove my friends new Toyota Sienna, its very stable.

Is it normal?

 

What kind and what shape are the tires in? I have a 430 and a 98TL. I replaced the OEM tires with the 960 PP's on the 430 and the ride is not as noisey and does not follow the tar strips as much.

 

I got all Bridgestone Potenza RE950, looks like 80% left, but hear tire nose around 10-20 mph.

 

http://l-tunedparts.com/product/?id=491

Will this tighten this ride?

 

how many miles on the GS?

 

Yank out the bedspring suspension & slap in a coilover suspension. The factory setup is very unstable at speed especially on nyc streets & highways. Many choices to choose from.. Search.......

 

is that means change shocks or just the spring? Someone quote me for all the shocks and spring will cost me $600.