As the image cut-out process is designed for cars getting bikes in is rather difficult. As Bikes will appear too large in rimxchange window.

To get around this when your cutting out the image in photoshop make your canvas size 530x265 then scale down your bike to fill half of that area then leave one pixel in the top left and one pixel bottom right.Now increase your canvas size only, not image size to 640x480, this gets around upload requirements. Once in background removal tool, dont edit any further just click save and the system will crop the image down to your single pixels

When loaded in, there is an auto function that auto cuts the excess transparent area off the image. having the one pixels in top left and bottom right fools the system and the image will not be chopped down, therefor keeping the bike small in the middle of the screen rather than filling the rimxchange screen.

Pls note any baddly formatted bikes will get deleted.

PS put the bikes in the "Bikes" category for manufacturer

Good luck.