It absolutely does. You can see this especially in towing with the vehicle. If there is enough weight to cause the suspension to drop, it will automatically adjust by pumping more air into the suspension, increasing the pressure, and causing the suspension to rise again until it reaches the calibrated ride height. This results in an effective increase in spring rate due to the higher pressure.

This is all regulated by the height sensors. They are constantly reading the height of each shock and adjusting the amount of air in each corner of the car by opening and closing the cross link valves until each corner is within +/- 10mm of the calibrated height.

 

The suspension is auto-leveling, so AFAIK yes it should adapt if it falls outside the tolerance with the heavier bumper. That's why we have height sensors. Spring rate might be another issue, but that would mainly be an issue if you are hitting obstacles at high speed.

 

So, this is true no matter how much weight is added up front? I would think there is a limit to the auto-leveling function and at best, it's doing this adjustment but at the cost of something...maybe you'd be over-taxing the compressor or the air shocks.

It's just curious that if this were so easy, why have so many people added rod-mods when they attach ARB (or equivalent) bumpers? Not arguing...just trying to cull out some details/facts.

 

Yes. Well... true up to a certain point I'm sure. I don't know what specs the struts were designed to, but would imagine the gross weight of the vehicle plus a large safety margin.

The only reason people add rod-mods is to lift the car beyond the factory ride height. The truck will level itself at the predefined calibration height setting no matter how much weight you put in it, but people want to raise it beyond that for off-road. Hence, they fit every so slightly shorter rods so that the in order for the height sensor arm to remain in the same position (same calibration setting), the body must sit higher up.

 

Dude...cmb6s...I know that, man!

I'm one of the earliest users of the rod-mod to get lift until I graduated to the IIDTool. What I'm referring to is people specifically using a rod-mod to regain height lost by adding more weight up front. Maybe it was their imagination....I don't know because I don't have a bumper like that...but there was a use like that for the rod-mod, necessary or not.

 

Lol!

Perhaps just a case of misplaced money or an overactive imagination on their part. I hadn't heard of people doing that, but it shouldn't be needed. With a typical spring configuration, yes, but with a self-leveling air suspension, no way.

 

Cool. Thanks a bunch for the info. It's what I assumed, good to hear that in advance of the "you bought WHAT?" discussion.

 

So what bumper is this? lol because this looks hands down better than any I've ever seen

 

D3 Winch Bumper | Torque Performance 4×4

 

You'll want to buy an IIDTool anyway, though, just as an aside. It's invaluable. Having an LR3 without having an IIDTool is like being a mechanic without a screwdriver. Tom Brady without inflated *****. A Plumber without a butt crack. Should I go on? Anyone else?