ATV Tires and Wheels

Would it be best to replace my current tires with the same exact size, or is it okay to use larger tires?

If you decide to replace tires of different sizes, it is always best to check with the vehicle manufacturer. In general, you should be okay with minor changes, as with from a 20x10-9 to a 20x11-9. Although, is best to refer to the vehicle manufacturer to best ensure proper operation.