Does the TPMS light vs heavy mode change anything else (like dynamic suspension) besides the tpms notification?
I haven't been able to get an answer on this question. I've asked my service guys at the JLR dealership and they are clueless on some of the more deeper config questions like this. I would think that it would do something, otherwise why ask the question and allow the config. However, that something may only be changing when the TPMS warns you, and more than likely that is all it does.
Caymus, I think your real issue with roll is the 19" and the taller sidewall on the tires with those rims. The Conti's are great tires, but you have a lot more sidewall to flex than my F-Pace does with it's 22s. You also more than likely have a much more smooth ride over bumps than me due to that as well. However, the 22s will carve a turn much better than the 19s when every thing else is equal.
With that said, even with 22s, my F-Pace will lean in a turn when I push it hard. Not lean like I saw with my Pilot, or even lean like I saw with my Q7 but it does lean more than my M45 and Accord Coupe (which were both lowered), and it's just a factor of it being an SUV and the center of gravity being higher. The lighter weight helps when compared to the Pilot and Q7, as does the wider track. However, Adaptive Dynamics, the wider track, 22" tires can't make up for the physics that the car sits higher. It's going to lean. You could fix that by lowering it, but the easiest fix to help a bit would be bigger rims and lower tire sidewalls.
I just ordered by summer wheel and tire setup and I went with 22s. 10.5 rims, but I was hunting for 21s. I think that is where the sweet spot may be for ride quality with handling on the f-pace. I also had 295/40 R21s Continental DWS' from my Q7 laying around with only 4k miles on them (with the SLine 21 inch rims if any of you guys have Q7s and want to upgrade). However, the pickings for 21s X 10 or 10.5 are not high out there. Options were slim so I went with the 22s again.