What lowering springs do you recommend? Will the F-Sport shocks work best with any lowering springs? I don't want an aggressive drop because of our snowy winters.

 

F-Sport Shocks are your only options for the IS250AWD if you choose lowering springs. I think most aftermarket spring rates for the IS are pretty much all somewhere in the realm of F-Sport springs, so F-Sport Bilsteins will be a perfect candidate if you go that route. Bilsteins are very high quality/durable shocks - you can't really go wrong. Although you might want to search around for reviews for the AWD with Bilsteins. Since the shock design is different up front, I don't know how they compare to the RWD front shocks as far as ride/comfort/performance.

 

the good thing about coils i that you are able to adjust the height. When winter comes around, adjust it up.