snfrd84

It's been awhile since my 08 IS250 has rode smooth and taken bumps easily. Probably been over 2 yrs since I put on lowering springs.

Have Michelin's on the car, but when hitting a bump or pot hole, just slams. New springs needed possibly?

bbaugher47

Original shocks? How many miles on the car? Are pressure?

Blaque Diamond Wheels

They say when you install aftermarket springs, you need to be cautious of the lifespan of your shocks. The shocks were not made for the spring rates of the new springs. I would definitely have them checked. Either that or they are leaking ( I had the shocks on my 3IS leak 10k miles into the lease term, the car was bone stock).

snfrd84

Bought some springs off Amazon probably 2 yrs ago or so? Can't remember the name, car is at the house.

Blaque Diamond Wheels

Regardless of the brand, have the car looked at. It would be awful if something were to happen while you were driving. Safety always comes first.

snfrd84

True. They are Megan springs.

bbaugher47

You most likely need new shocks.

primavera

Usually the lower the spring the faster the shocks blow. Megan springs drop the car 2" which is enough to kill the stock shocks in short time.

snfrd84

I took the OEM springs off at around 80k miles. Will put them back on probably for now. What's a decent set of shocks?

bbaugher47

So , I am in the market for shocks as well , or coils. I am currently dropped on H&R springs on OEM shocks. Rear passenger is leaking which is somewhat common for our cars. I am looking at the following options : Tein endurapro plus shocks. They’re 16 way adjustable and 475.00 from ebay. Second option is tein FlexZ coilovers , NOT the street advance. The Flex series are still made in Japan and have more features than the street. 8/8 spring rates are a bit soft but should ride like oem. Ive found these at a steal of $696.50 bs the usual price of 850.00 or so

2013FSport

iTrader: (2)

Something that kills dampers is sharp impacts like speed bumps at FULL speed, train tracks, pot holes, etc...

In short these incidences boil the fluid taking life from the damper. To boil the fluid the pressure spikes rapidly, as a result, they leak at the shaft seal. Hence - blown shock. Anyone who has serviced theses and smelled the smell of burned fluid will know how the vehicle was treated.

Be nice to your vehicles, they will live longer and complain less.

snfrd84

All solid advice. It's my main vehicle, so I don't abuse it, but as others have said, the lowering springs could of helped speed things along.

604GSE21

Koni yellows imo would be best for lowering springs...

Lexyaaaas

iTrader: (2)

Sounds like you need a stiffer spring rate to avoid the slamming.

I kind of skimmed this thread so sorry if someone said it already, but also when you add a lowering spring to stock shocks (or shocks that are designed to work with stock springs) you're going to shorten the life of the shocks.

IMO its easier to buy coilovers and they are are height adjustable. After finding the correct struts for your lowering springs you end up paying almost what coilovers cost. You could always go with a softer spring if you want it to ride nice like factory. And then they revalve the struts to match the spring rate. Overall IMO coilovers make everything easier even when it comes time to rebuild them (if company has support states side). Company like BC sells every piece on their website.

toommmy

Wondering if I can get some help. I mounted oem Fsport springs with the stock shocks. The springs lowered the car by 1 inch but the ride is horrible. I expected a more stiff and "sporty" ride but it's very harsh. Has anyone else experienced this? It almost seems like the shocks are bottomed out and not dampening the springs at all. My theory is that the standard shocks are at a higher "neutral point" and are not able to dampen properly or at all at the new lower neutral point. Opinions?