The i30 Owners Club

GD Tourer - Saggy Bottom Solution - Polyair install

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Offline josh1990

  • 3rd Gear
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    • Posts: 166

    • au Australia
      NSW
So as we all know, the GD Tourer has a saggy rear end due to too soft springs. This has annoyed me to no end, as even loading the boot with a few items leaves the tyre tucking. There are no easy, off the shelf solutions to this issue in Australia. Or is there?

I reached out to Polyair after seeing the Air lift 1000 thread as I didn't want a universal solution given that I would be towing a camper. A lot of too and fro and measuring led to Polyair kit 63593 - for a Jimny.

I installed these over the weekend - I will take some pictures soon, I'm not 100% happy with the air line route I chose (remembering this kit is not for our i30s). The bag itself was able to be inserted from the bottom with a bit of creative folding (zippies didn't work, bag too stiff). There is no rubbing noise from the bags, they seem perfect girth. The negative camber on the bum unloaded is gone. The roll through the corners is gone, feels much more direct.

I will put a decent load on the tandem in the next few weeks and take some pics at varying pressures in the bags. Same again with the camper when it arrives. So far happy with the solution, especially considering no spring removal and cost under $200 (ebay sale $187.95 from sparesbox).

Stay tuned folks


Offline josh1990

  • 3rd Gear
  • *
    • Posts: 166

    • au Australia
      NSW
Been a bit slack on the pics - busy busy busy. So overall I'm still very happy. My wife assures me there is a slight, but only very slight (can't hear over the aircon on 2) noise - being deaf I can't hear that. Here is a super scientific (sarcasm) group of photos that show the difference.

Pre air bags - Canberra costco stock up (no peeps in car - she's full but not a lot of weight)



Here we have well over 120kg in the boot, 60kg directly in line with the ball (and we've added towbar of course)





And mostly unloaded



We pick up our Lark shortly which will be nowhere near the weight we've had in - of course we'll have some sort of luggage for the car but there's still room for more pressure (max 30psi - intend on 24psi and see from there)


Offline sn

  • 2nd Gear
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    • Posts: 33

    • au Australia
      Perth n.o.r.
Gidday Josh,

Our wagon has the same saggy arse as yours [and every other GD Estate in Oz]

Due to several factors, I had to get extra ground clearance - so hooked in a Ukraine 20mm lift kit, along with going up a size in tyres [greater diameter] which combined gave me 35mm extra clearance.

Still badly needs better rear springs, and a heftier rear sway bar would be nice too!

So.. tell me more about your polybags - what was the problem with the piping?
Any other stuff to report?
  • 2013 gd wagon, petrol /auto


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