ilshm113

I want to lower the car with RSR DOWN SPRINGS but I have some people telling me that I will destroy my shocks in time and other people saying its fine.

Any and all professional advice would be appriciated on this matter.

jkonquer

yes it will. You generally want to go with complete shocks with springs or coilover system.

bucanero

I don't think it would be a big difference being that the shocks are new. It might be more of an issue if you were to have some wear on the shocks and then decided to put the springs on. There are a million different opinions on this... That's just mine.

4TehNguyen

iTrader: (1)

stronger spring rates will wear the shock faster, but since these cars are new they arent going to go out for a while

L0ngJ0hn

Usually the lower the spring the faster they'll blow.

dojoman

iTrader: (5)

This.......

SCSurf

So what shocks do you recommend to accommodate the lowering springs?

jkonquer

it all depends on which springs and shocks you go with. Many aftermarket suspension companies (ohlins and Bilstein) and fixed strut combo set that would lower the car very minimum and give you better handling.
Companies like Koni and Tokico shocks are made for factory ride height, so you would not improve longevity of your shocks.

As long as the drop is very minimum (1" or less) would be ok for awhile. But I would definitely recommend some high quality coilover sets if you want lower ride or looking for better handling.

dojoman

iTrader: (5)

You will lose the AVS feature with S+ mode if you switched to coil over.

Mushi31

iTrader: (1)

U can opt for th J5 coilovers with the AVS thing or if there is anyone who knows people at RSR that could somehow R&D their coils with the stock AVS that be great....

Dustondo

depends on the combination of shocks and springs. I've run lowering spring on stock shocks for around 100k without issue, including some track time and plenty of driving over terrible roads. I'm currently leasing an IS so I'm definitley not going through all the work of installing/removing coils in two years regardless of how cool the service manager is. So springs it is as long as it's leased to get rid of the gargantuan suv like wheel gap...

ilshm113

@Dustonto so are you able to put the stock springs back on when you return the car ?

a790

I can't speak on behalf of the IS as I am taking delivery of mine tomorrow, but I took delivery of a 2012 Kia Optima SX February of 2012 and had it lowered two days later. I traded the car in with no issues at any time from the shocks after driving 31,000 km.

Shocks are cheap anyway, so if they go you can always replace with some aftermarket units designed with the lower springs in mind

nytefury

What of the shocks provided from Lexus with the nitrogen gas system, would those last longer if the car is put on lowering springs?

Here's the link to Fsports Shocks Absorbers i am referring to:
http://www.lexus.com/models/IS/accessories

Off topic.. are those worth upgrading to? Thanks!

a790

If you are looking at upgrading to those, at this point I'd recommend that you get some lowering springs and a decent set of aftermarket shocks and get them all done at once.

EDIT: Apparently the RSR springs are designed with stock shots, though they offer a modest drop (2.5-3 cm front, 2-2.5 cm rear)