I'm curious I want to upgrade my rims and tires from the factory stock 20s. But I've been told that since it has the leveling suspension if I get anything bigger it will mess up the car when it levels out. Is there a way I can disable the leveling system or do I have to at all? And is it possible to get the off-road tires or should I stick to the stocks for the 20s?

The car works much worse off-road with anything >20", while there are some off-road tires of 21 and 22 size, I doubt they will be of correct dimensions width/profile wise.
RRS is not actually designed for anything bigger than 20" anyway. If you fit 4 identical wheels it will cooperate with the suspension, however issues may occur (tires or rims touching the suspension elements etc). Regards etc.,

Wojtek

---
WAS: 2006 RRS Supercharged
IS: 2010 RRS TDV8 HSE

22's are OK on the RRS1,,I had 22' on mine & their are plenty more out there with 22's.The tyre size you need is 285/35r22's

Andy. Andy.
21 Ford Ranger
Gone but not forgotten
Focus RS Red Edition
2015 RRS AB Fuji.
2014 RRS SC Santorini
2016 VW Amarok
2014 RRS AB Fuji
2012 RRS Red Edition Fuji
2015 Nissan Navara
2012 RRS SE Santorini
2008 RRS White
2007 RRS Santorino

Your car is an S/C so your problem when going below 20" stock alloys is finding a design that will fit over the big Brembo brakes, there is a Land Rover OEM design 19" that will fit no problem but most will not clear the callipers. I ran my TDv8 HSE on a set of Goodyear MTRs from s Discovery 3 on Disco3 19" rims with no problems (Discovery 3 is LR4 IIRC in USA) 2020 Pangea Green 1st Edition D240 New Defender 110 is here and loving it
2018 Melting Silver Mini Countryman PHEV - soon to be replaced
2015MY Corris Grey SDv6 HSE Dynamic, the best car I have ever owned, totally reliable only a cou0le of rattles in 3 years, now no longer in my care
Also in my garage is a 1996 TDi300 Defender 90 County HT made into a fake CSW