The photos of the white disco with the 5 inch lift actually demonstrates very well the issues with such an exercise. You will notice that the front spring has not compressed at all due to the stiff springs used for the lift. To prove that, look at the gap between the top of the wheel and the guard (fender). With standard springs and all wheels flat on the ground, a 5 inch lift would cause the top of the tyre to be 5 inches further away from the guard. This Disco has supposedly 35 inch tyres. This would mean that 3 inches of the extra gap would be taken up by the bigger tyre, leaving the car sitting with a 2 inch extra gap. In the photo with the wheel up on the wood, the gap between the top of the wheel and the guard is still about 2 inches greater than the standard gap. This means that the spring has virtually not compressed at all. The result of this is clearly shown in the photo, the car has been tilted heavily to the right, increasing the chance of roll over and making it unstable. You can also see that the back springs have also had no movement. If you lighten up the photo you will see that the rear springs have become disconnected at the top by around 6 inches resulting from the spring not expanding with the change in load on that wheel. Therefore the spring is not giving the car any stability at all. This set up will give you a very rough ride due to the very heavy springs, the height will increase instability, and the springs will not support the vehicle through any movement. So in summary the Disco is pretty useless on and off road.
Keep the springs as soft as possible and don't go doing these sort of things to your car.
Ian
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