I think I have a problem

Tyre mountain

Contents:
2x 700x25mm Continental GP4000s
4x 700x32mm Kenda Small Block 8
2x 700x25mm Bontrager Race X Lite Hardcase
2x 700x28mm Bontrager Race Lite Hardcase
1x 26×2.35 Bontrager Jones ACX
1x 26×2.2 Bontrager Jones ACX
1x 26×2.2 Bontrager XR4