Some test scenes below
Content:
HD Concrete Surface 3
Material: Concrete
Type: Flat Surface with stones
Color: Gray
Resolution: 8192×8192 pixels (power of 2)
File Format: JPEG – high quality
Tiled: Yes(Ortho direction is best but not critical)
Appointment: 3D Rendering(architectural visualization for example), Web design, Graphical Design, Game Engines.
Content: Deffuse map( four versions), Normal map, Glossy map.