What is the biggest tire to fit stock 2003 rubicon?

The largest tire size that can typically fit a stock 2003 Jeep Rubicon without modifications is around 31 inches in diameter. While some owners may be able to fit 32-inch tires with minimal rubbing, it's advisable to stick with 31s to ensure proper clearance and avoid any potential issues with suspension or steering components. Always consider factors like wheel width and backspacing when selecting tires. For larger tires, modifications such as a lift kit may be necessary.