Does it exist

[DeMMir]

I couldn't find any posts related to this so I want to ask
is there any kind of program that allows me to edit the existing mm2 cars that have been already made, like removing some parts e.g. spare tire for VW Golf II Country
or I have to do I the hard way

Tnx for all the help

[Franch88]

There's no program ever made that allows to edit something of the 3D model of a car add-on. It's also something hard to do automatically and easily through a program made for this, I can't neither imagine how this can be implemented. The only way to do any edit to the car 3D model is the manual one importing, editing and exporting it using ZModeler, of course for personal use and if the .ar file isn't locked.
The kind of edit that you mean is to only one object, the main one of the car called BODY_H, and so means remove polygons from it if you want to remove a car part like the spare wheel. If a such object was made as breakable part the discourse was different, and maybe can be implemented a program able to delete the objects of a car add-on like the breakables; the thing becomes more easy in this way.
The only edits that some programs available allow to do are some related with the car performances, the car cameras, the car damages removing, the car suspensions editing and little more.

[aaro4130]

This IS possible, but the team who has the know-how is retired, so, this wont ever be made, HQTM Team knows how to get by protection, and they can make a program that can make textures transparent, but they gone now

[Franch88]

Make a program to replace the texture files also in locked .ar files maybe is possible, so you can replace any texture of a car with the ones that you want, so is possible to hide parts using transparent textures. But, in the case of that car, sure the spare wheel use the same textures of the car wheels, so making it invisible also the car wheels will be invisible. Also, if there are the reflections, completely transparent or invisible parts will result present because of them; has to be possible to remove them too through the same tool.
I don't see a such program worth, it's useful only to ruin a car changing the textures with others that aren't good for it becasue of the mapping. And however, such edits are possible through self-made .ar file patches, just check the textures file names of a car and do tries.