This low-poly tank model has such tracks only for presentation. If you want to use the model for games, please, add a new more simple tracks. Without these tracks the model has just 60 thousands triangles. The tank has all 14 4k-textures for PBR workflow: base color, roughness, metallic, ambient occlusion, normal. The T-26 has two main parts having separate UV-layouts. There are 7 textures for each part made by using Substance Painter.