I have Nitto Terra Grappler G2 285/50R20 on a 2013 LR4 and the front driver tire has some rubbing issues., plus it won't fit in the spare tire wheel well under the truck. So I am looking to replace them, but what size will fit in the spare wheel well? Ideally I want to keep the spare tire fully inflated, but if that's not possible, deflating it is an option. My options/questions are:
1. 5x Nitto Terra Grappler G2 265/50R20 on stock wheels
2. 5x BFG All-Terrain KO2 265/60R18 on Compomotive PD1881
3. Any other good on/off road tire in 255/50R20?
Of course KO2 on Compomotive is a very good option, but that's about $3000. Downside to 265/50R20 is cheaper ($1200), but has less sidewall. Will either of these option fit under the LR4? I do mostly highway road trips with some off-road. Is switching to 18" worth it for my use?