Andrew C replied:

Heres an old thread.http://www.exploroz.com.au/Forum/View.asp?ForumQID=411
Im considering buying a set myself. I think its a hard ride if your cars got HD springs and little weight in the back.

Joe replied:

Cookey,

If you are going to keep your Toyota Pajero (sorry - I can never resist at the fact that Tojo copied the Pajero) well laden all the time then the HD springs are a better bet for you.

However, if (like me) you will be running the truck unladen for a large proportion of the time and only loading it up for the odd trip then the Polyair adjustability makes a great deal of sense. I have heard virtually nothing but priase for them.

I am going for the Polyairs.

Joe

Tony replied:

Cookey, I fitted PolyAirs to the rear of my 80 series and I think they are the bees knees! I towed a heavy camper for 10,000ks through the desert regions and they make a world of difference. Doesn't bottom out anymore, smoother ride, they *don't* restrict articulation as long as the pressure you run is commentsurate with the load. At first I had them with standard height springs without any problems but I have fitted a lift kit now and the air bags are back in and doing a supurb job. The only thing I would recommend is; the air line supplied is not very robust. Do yourself a favour and either replace it with fuel hose (as I have done) *or* feed the air line through some reinforced hose line. You'll understand when you see the line supplied. It's thin black plastic and can puncture easily from stones. I have done over 30,000ks with mine and the bags themselves show absolutely *no* sign of scuffing or wear. I love 'um.

Peter Gordon replied:

Cookey, I fitted a pair to my Prado and they did a superb job up until I sold the vehicle. HOWEVER, they DO NOT increase the load carrying capacity of the vehicle, they mearly keep the whole thing level when loaded. If you use them to increase load carrying capacity you will find you start breaking wheel studs, axles, and even warping wheels if you go to far. Good Luck, Peter

Cashy replied:

Cookey what the suppliers don't tell you when they fit the polyairs is that they have to cut out the bumpstops in the Prado which can lead to you over compressing you shock when you have the polyair deflated and you are having some fun off-road. A friend of mine found this out and needed to replace his leaking shocks as they had hairline fractures at the top of both rear shocks.
I would recomend to replace the springs with a heavier duty set. I run King Spring and Bilstein shocks and after 60K of this combination and cannot fault them. I have taken my Prado to Cape York this yeear and the Gunbarrel highway last year without any problems. If you fit aftermarket springs you also have the option of increaseing the height of the springs as well to help with approach and depature angles.