Re: Tire size and ground clearance
??? What do you mean your tires are rated at 18 inches?
Maybe I can clear this up for you. The tires that came on your jeep are 30.5 inches tall. This is the same as all the different wheel tire set ups that come on the vehicle. More rim less tire, less rim more tire. Same overall Diameter. All the same "ground clearance".
2013 Wrangler Rubicon Unlimited Commando Green 2.5 inch Terra Flex, 35x12.50 Grabber RED LETTERS
2011 Grand Cherokee Laredo E Stone White, ORA1,Factory Tow, RRO leveling kit. 32x10 BFG Mud Terrains 13 Rubicon Wheels