Why are some Lesjöfors heavy duty springs shorter than the standard springs I am replacing?
Because heavy duty springs are stiffer than standard springs, a heavier load is required for compression. Most heavy duty springs are shorter than standard springs so that the car does not sit too high when unloaded.
How much stronger is a heavy-duty spring compared to a standard spring?
Generally, heavy duty springs are 15-30% stronger than standard springs, depending on the vehicle.
Should I check the wheel alignment on my vehicle after replacing the springs?
Yes, Lesjofors always recommend checking the wheel alignment after replacing a spring to avoid any unnecessary tyre wear.
I am going to mount a Lesjöfors spring and the diameter at both ends is the same, but the spring is more closely coiled at one end. Which end should be up and which one down?
The performance of the spring will be the same whichever way it is mounted, however Lesjofors always recommend springs are installed with the more closely coiled end to the top to avoid road debris, e.g. gravel, getting between the tighter coils.
Why do you recommend replacing springs in pairs, although it might be only one spring broken?
When only 1 spring is replaced across an axle, the life expectancy of the other spring will decrease and the car may be imbalanced. Failure to replace springs in axle pairs can lead to an uneven ride height, less responsive steering, less secure road holding, increased braking distance, increased tyre wear and increased fuel consumption.
Why are some Lesjöfors springs shorter than OE springs?
Some original springs are made from tapered wire, which means the thickness of the steel gets thinner towards to the end of the spring. Most Lesjöfors springs are made from a consistent thickness of steel, which means they will sometimes be slightly shorter, but are designed to sit at the correct height and compensate for length as original.
Can I purchase sport lowering springs individually or purchase only the front or rear springs?
No, Lesjöfors only sell full lowering kits. Some sports lowering kits do contain only the front or rear springs, but this is due to a different suspension system on one end of the vehicle.
Do I need to change my shock absorbers if I install a Lesjöfors sport lowering kit?
No, Lesjöfors have developed their sport spring range to work with standard shock absorbers. However, if you wish for even better road holding, we recommend switching to gas shock absorbers. You should always check the condition of your shock absorbers when fitting any spring, and replace at the same time if necessary.
Why do you say "Sport springs" instead of "Lowering springs"?
Lesjöfors sport lowering kits are designed primarily to enhance driving conditions with slightly stiffer springs and a moderate lowering effect. Other lowering springs are often not stiffer than standard, and are designed purely to lower the car.
Why don't Lesjöfors offer any sport lowering springs which lower a vehicle by more than 40mm?
There is a risk of negative impact on road holding is cars are lowered in excess of 40mm. A heavy reduction or elimination of spring travel distance is common on kits lowering by more than 50mm. Lesjöfors do not believe it is possible to achieve a well-functioning spring with increased lowering rates without creating problems coordinating with standard or gas shock absorbers. If you wish to achieve a lowering effect over 40mm, you should use the so called 'Coil-Overs'.
Are Lesjöfors gas springs supplied with end fittings?
Yes, most Lesjöfors gas springs are supplied complete with end fittings for easy installation.
At what temperatures can I use a Lesjöfors gas spring?
Lesjöfors gas springs are designed for ambient temperatures of between -30 and +80C. If possible, avoid intensive use at the extremes of this temperature range. Reducing/increasing ambient temperature also means a reduction/increase in gas spring force.
Are Lesjöfors leaf springs supplied with bushes?
Yes, Lesjöfors leaf springs are fully bushed, using rubber bushes for lighter vehicles and rubber to metal bonded bushes for heavier vehicles.
What is the meaning of build 2+1, 3+2, 4+1, etc when describing leaf springs?
This describes the number of leaves in a particular leaf spring. Occasionally, some multi-leaf springs are produced with auxiliary (helper) springs, to stop the spring becoming inverted during load. Where an application is listed as having a build as 3+1, the +1 refers to the number of auxiliary springs.
Do Lesjöfors offer replacement U-Bolts along with leaf springs?
Yes, Lesjöfors offer a universal U-Bolt range covering the majority of applications, supplied complete with nuts.
Do I need to replace the U-Bolts when I replace a leaf spring?
Yes, Lesjöfors recommend replacing the U-Bolts with the leaf spring to ensure correct fitment.
The U-Bolts I have received are too long
As the Lesjöfors U-Bolt range is universal, covering many applications, some are supplied longer than they need to be. They should be cut to the correct length for application during installation.