That sounds like a great idea to convert the Horal SP3 026 from FS22 to FS25! To do this, you will need to use the Giants Editor software to make the necessary adjustments and configurations.
First, you will need to import the Horal SP3 026 model from FS22 into Giants Editor. Then, you can start adding the new configurations such as wheels, cover, and color options for the body and rims. You can create multiple XML files for each configuration option you want to include.
For the wheels configuration, you can add different types of wheels that players can choose from. This can include different sizes, designs, and tire options.
For the cover configuration, you can add options for different types of covers that can be attached to the trailer. This can include tarpaulins, lids, or other types of protective covers.
Finally, for the color configuration, you can allow players to choose from a variety of colors for both the body of the trailer and the rims. This can include basic colors as well as custom color options.
Once you have added all the configurations and made the necessary adjustments, you can export the mod and test it in the game to ensure everything is working correctly. Don't forget to include a mod description detailing all the configurations available for the Horal SP3 026 trailer. Good luck with the conversion process!