2015 Chevy 2500 HD! We have upgraded the wheels, tires, suspension and running boards! The wheel is a 20x9 Fuel Offroad Vector wrapped in a 275/65R20 BFGoodrich Tires. The suspension was upgraded from stock to FoxRacing 2.0 Front &a Rear shocks. Last but not least we upgraded the side steps to AMP Research plug and play power steps!