Tires
Depending on tank size, commonly used tires available in radial or bias-ply include:
23.1 x 26
28L x 26
30.5 x 32
Other options include the 35.5 x 32 and the Alliance 35.5R x 32 Agri-Transport.
35.5 x 32 Tire
The Alliance 35.5R x 32 Agri-Transport Tire standing next to a Titan 30.5 x 32 Radial.