Not really sure what the reference height is against, so don’t know?
And yes, the general consensus around here is that it just means you are driving around in off-road 1 when in normal mode.
For reference, the reason was to decide if we preferred an ORG to a non-ORG. I didn't have a need to raise the truck per se. We wanted the skid plates and electronic diff. The ORG includes them plus hill descent and the HD shocks and is less expensive than buying them separately with the last two not available separately. However, it also changed the height of the air suspension settings...but without published data, we were unclear how much. We would have preferred the truck at the lower height normally.
The ORG also includes a full-size spare which isn't full size and all-terrain tires that seem several generations behind the latest. I wouldn't tow without a spare identical in size to the other tires so intended to change all the tires and the spare tire and wheel shortly after purchase. So those were of less value.
The reference is the 2017, when FCA published data for both the Rebel and other Rams.
https://media.fcanorthamerica.com/download.do?id=17681&mid=69. In that spec, most models came with 33" tires, either 285/70-17 on the Rebel or 275/60-20 elsewhere. Some lower-end models had 31.6" 265/70-17. All had an air suspension option, Rebel and Limited had it standard.
Net: The Rebel was a 1" taller than the 265/70-17 and 1/2" taller than the 275/60-17. It was raised 1/2"
| 265/70-17 | 74.9 | 77 | 77.9 | 79 |
| 275/60-20 | 75.5 | 77.6 | 78.5 | 79.6 |
| 285/70-17 | 75.3 | 78.1 | 79.1 | |
These numbers indicate the current Rebel and ORG are raised a full inch plus the gains from a taller tire.
Except that on the Rebel/ORG has no speed limit (or rather the Ram 1500 105mph speed limit) at this height and without the Rebel/ORG they have these restrictions:
Owners Manual Page 299 said:
When in the OR1 position, if the vehicle speed remains between 40 mph (64 km/h) and 50 mph (80 km/h) for greater than 2 0 seconds or if the vehicle speed exceeds 50 mph (80 km/h), the vehicle will be automatically lowered to NRH. Off-Road 1 may not be available due to vehicle payload,
The initial engineering part of the press release said: " an off-road biased rear suspension geometry (Rebel and 4x4 Off-road Package) and unique off-road-calibrated shocks bolster trail capability. " Those sound like comments engineers make in when marketing is pumping them for buzz words to say. However, it also indicates they may have thought about wheel travel. Did they change the lower shock mount? The shock for ORG with air suspension has a different part number. The Rebel Bilstein branded shock with air suspension is yet another part number. There are all different part numbers for the front spindles for air suspension/non-air suspension and 22" wheel/non-22" wheel.
Without knowing wheel travel/extended and collapsed lengths there is no way to know for sure that they moved the lower mounting point to lengthen the shock bottom, but it seems likely that they did. If that is the case the 1" in actual raise should clear a tire 2" larger in diameter. For example, a 285/70-18 (34"), 295/70-18 (34.3"), 285/60-20 (33.7"), or 295/60-20 (34"), A 34" tire with ORG would raise the chassis 2" at normal height over OE 32" tires and non-ORG air suspension. From reports, a 305/12.5 wide tire would probably require a wheel with +12 offset or 6mm spacer in most cases.
