Originally Posted by Evel

SUBJECT: NO RECOMMENDED SPRINGS FOR GS AWD MODELS by Tanabe or Tein
I8ABMR & All,
A few days ago I8ABMR you recommended I check w/Tein to see if the HTech springs will work on AWD models. They said no & that they are looking for someone in their CA area with an AWD to test on. When I pressed them on the negatives using the HTech springs they responded with:

Thank you for your interest in TEIN High Performance Suspension products.
Unfortunately, we have not tested the AWD model of the '06 GS300 for compliance with any of our current product offerings. Additionally, we believe there may be design differences between two models, and would not recommend installing any spring kit onto a vehicle it was not specifically designed and intended for, as this could be a potential safety hazard.
However, we have noted your inquiry and can contact you via email in the even we release products for your application in the future. Please feel free to check in with us anytime regarding current or future product availability.

-Staff @ TEIN USA INC.

Tanabe stated basically the same message.

Looks like us AWD owners who don't want to runs the risk of potential problems using aftermarket springs made for RWD GS's will have to tough it out. No one in Cali will have an AWD model.

Originally Posted by tjp74

Many AWD owners have sucessfully fit both springs types with no problem. Any manufactorer will always strongly discorage potential buyers from using their product in an unintended way for a legal liability reason. They will usually scare us with a "potential safety hazard" crap
You will never in any case hear them saying "go ahead and try it and let us know if it works" event if you pledged that you will try it at your own ristk.

I am getting a set of Tein H for my AWD once my wife approves it.

Originally Posted by MKIV98TT

I have a 07 GS350 AWD in So Cal. About 30 min from Tanabe & Tein. Running the Tanabe springs now with vibration issues. I would let Tein take a look at it.