What is the biggest size tire that will fit on a 2005 Nissan Titan?

The biggest tire size that typically fits a 2005 Nissan Titan without modifications is around 33 inches in diameter. However, fitting larger tires, such as 35 inches, may require a suspension lift or trimming of the fender wells. Always consider the vehicle's specific configuration and check with a professional before making changes to ensure proper fitment and avoid rubbing.