I've had the half downs on for a while now and finally got around to measuring the "after" drop. They have settled a bit. When I first got them, it was almost unnoticeable but after they have settled I'm quite happy.
Front is 3/4 lower
Rear is 1/2 lower
It does a nice job of getting rid of the reverse rake look.

The car is a 350 Fsport RWD

I've had 4 adults in the car with no problems with rubbing. Tires are 225/35 19 and 255/30 19.

The ride might be a bit firmer than stock but hardly noticeable.

The picture is after. I have some before and after close ups of the gap if anyone is interested.

 

Agreed I just went with RSRs AWD springs and they are amazing. The ride a great and the drop is noticeable. I did call RSR and they said the half downs would probably work for AWD but they have no plans on making them for the AWD version😟

 

Thats a 20 Inch Wheel on Half-Down Springs from RSR.
235/35/20 Front, Vossen 20x9 Minor Rubs at an angel when reversing and turning around
255/25/20 Rear, Vossen 20x10 No Rub At All

i should get 225/25/20 for the front but i didn't find any at that time.
The Ride is smooth and it got slightly better with RSR springs. I love them.

 

have you noticed if you get more ground clearance going +1 on the wheels? I also have the half-downs and i'm looking to gain more ground clearance by going 19"...trying not to go 20" lol

 

What brand tire is the 255/25/20 tire? Thanks

 

The tire diameter is almost identical to stock tire sizes so there is very little overall difference in the ride height. I can't confirm measurements though because I didn't measure before I put the 19's on.

 

You can have almost all sport brands. Ive got pirelli pzero

 

I placed order for half downs 3 weeks ago. Still waiting for them. Im swapping over from being RSR downs. Ive been rubbing like crazy. I had to get camber arms hoping i will be able to not run as much negative camber. Im rolling on 20s 10.5 wide in rear 255 30 r20. I thiks whats making things worse is i have a 13.5 inch jlw7 with a huge box thats lowering the car even more you cant even fit a finger where the rear bumber and fender meet. Im even rubbing in the front im waiting as patiently as i can but its taking forever

 

3 Weeks?! What? Which vendor are you using? There should be no reason to wait that long, RSR springs are plentiful.

I have RSR Downs on stock wheels +20mm spacers all around. I have a 1/2 finger gap int he back. zero rub. Your wheel offset is probably too aggressive (i'm guessing 20x10.5+40) thus the rubbing. You could try stretching a 245 on there, or get different wheels.

on half downs, the ride height will sit higher when the back is not weighted down, yes, but as soon as those rears get compressed (passengers, stuff in trunk, etc) you will continue to rub.

 

Really liking the RSR half down. Do they make them for 2014 IS250 AWD?

 

They make the half down for RWD and the regular down and superdown for AWD. I have the down and superdown in stock!

-Josh

 

could you please post up before and after pics and more angles with those wheels as well please? I"m getting the same tire size and have half downs on the way as well.

 

Can someone please post pictures of their IS with their RS-R half downs?

 

Half downs on 19's.

 

beautiful, thanks for sharing.

Could you let me know what the tire and rim specs are? I'm about to get Niche Targas, 19" with 225/35/19 and 255/30/19s in the back. Trying to make sure there are no rubbing issues.