Samieee

iTrader: (1)

Register with your CL user name and you'll see $218

SirKnight

Cool, Thank you! For that price I am willing to try them out on my 2011 IS350c just to see how it looks and to make sure it does not effect ride.

Jump2man3

iTrader: (7)

Save your money and get coils.

bob4256

iTrader: (17)

I agree with jumpman. You can adjust the ride height and feel, unlike springs

The Fsport springs will only drop the car 1 inch (if your lucky) and you wont be able to notice the difference, especially on a convert.

Jump2man3

iTrader: (7)

Take it from experience man. I bought f sport springs just sold em not even on the car a month. Coils are the way to go

Jump2man3

iTrader: (7)

Bob is right as well 1 inch and if your lucky. My car had a drop is 1/2 in front and 1/2 in rear maybe less.

bob4256

iTrader: (17)

If it only dropped 1/2 inch, you probably had the sport suspension from the factory . Those springs are 1/2 inch lower than the non sport suspension

Jump2man3

iTrader: (7)

I dont think it was lol. Maybe a little more than 1/2 but no more than 3/4 each

SirKnight

I just want to make sure the ride is just as smooth or even smoother if that is possible. If I can not keep my smooth ride then I will not change a thing.

bob4256

iTrader: (17)

Then you should get coilovers.

Once you get springs, your stuck at that height and how the ride feels. While coils let you adjust the height and make the ride soft or stiff

SirKnight

Any issues with warranty of vehicle with Coils? Also were do you purchase these coils? Best brands/place to buy?

bob4256

iTrader: (17)

Technically you would have a warrnaty "issue" with any aftermarket part you put on the car.

Your warranty is void on any part that you replace.

The most popular brands are Megan and BCR. If you dont plan on tracking the car or having an aggressive stance, the Megans will work just fine. Check with out vendors for pricing

SirKnight

So it looks like I really have two choices in models of coil overs for my 2011 IS350C:

http://www.meganracing.com/product.a...d=401&catid=30

or

http://www.circuitmotorsports.net/bc.../i-532673.aspx

Will one of these two give me a smoother ride then the other? I would like to keep my current ride smoothness or if possible make it even smoother but drop down about 2" in the front and 1-3/4" in the rear.

Also I do not want the drop to effect any of the sensors in my 2011 IS350C like the tire pressure or traction control.. is there a max amount I can drop with out effecting any of the sensors or messing with tire wear?

bob4256

iTrader: (17)

Those are both good coils, and both are 30 way adjustable if I'm not mistaken. Tire wear may be an issue depending on how low you are and how aggressive your wheels are. I don't think you will have any tire pressure sensor issues

SirKnight

The wheels are the stock 18" Lexus 5 spoke but they are the upgraded wheels from Lexus as I think the standard wheels are 17".... or at least that is what the printed out window sticker/option sheet states.