Will 31 inch tire fit stock 2001 xterra?

No, a 31-inch tire will not fit a stock 2001 Xterra. The largest tire that will fit without modifications is a 30-inch tire. A 31-inch tire will rub against the wheel well and suspension components, causing damage over time. Additionally, a 31-inch tire will throw off the vehicle's speedometer and odometer, making it inaccurate.