How do rods help clear larger tires? I run 265/65R18 on my LR4. That is as large as I can fit without rubbing frame horns and other plastic. How does raising up help? You still have to articulate when off road. Being 2" higher doesn't help me clear the frame horns. That is one big reason I dislike some of the rod sellers. They spread false information like that to sell their MASSIVELY overpriced product. (Seriously, the margin must be crazy high).
Get rods for looks if you want, it sounds like some people can even get them to align that way. I have no problem with that. I'd just like the community to agree on the downsides and what is FUD (he says IID tools are not wise during warranty?) and what is false.
Actually, you are completely correct. I have never understood how people can lift an EAS sprung vehicle purely on rods or an electronic/reprogramming lift, add ridiculously oversized tires, and think they've actually improved the off-road ability of the vehicle.
The tires need to fit at full compression and lock-to-lock. You are not changing this with a rod lift or with an electronic/reprogramming lift. And if you lift much more than 30mm, you start seriously reducing the amount of available droop in the suspension. And hanging tires in the air is not going to make the vehicle better off-road - not to mention all the other negative repercussions on handling and dynamics.
Where a mild lift does help is in ground clearance. This is not only helpful in clearing large objects such as rocks, but dragging the vehicle's belly is what gets you stuck in deep sand or mud (and ruts, of course).
As far as IIDTool use during warranty goes: I'd be careful what I tell the dealer in any case and about my vehicle use in general. A warranty is just like an insurance policy: they love to take your money but will search for any possible reason not to have to pay out. This goes for the factory warranty as well. There will be no trace of any IIDTool use on a LR unless you bring your lifted vehicle to the dealer (or have flashed an ECU). There are memory "slots" on an IIDTool so that you can go from one height to another without having to add or subtract mm's. And there is also a back-up: both EAS values and the CCF are read and stored by the IIDTool on first use on a particular vehicle. If you want to go back to stock height or configuration, you only need to do a "restore" on either function.