Gran Turismo 4 Tracks 3d models request

[Mustafa]

Hi,

My name is Mustafa.

I`ve been looking for long time for 3d tracks models from Gran Turismo 4 but without luck to find any or respond from members.

May I ask if someone could help to to get these 3d file tracks? especially (Assisi / Città di Aria). I want to export it to 3dsMax (for rendering).

I don`t want to be banned if I`m posting in the wrong place.

Thank you in advance and I appreciate any help.

Regards,

[shak-otay]

4 hours ago, Mustafa said:

Hi,

My name is Mustafa.

I`ve been looking for long time for 3d tracks models from Gran Turismo 4 but without luck to find any or respond from members.

Hi,

that's no surprise if you don't provide a track sample.

[Mustafa]

On 6/23/2026 at 12:10 AM, shak-otay said:

Hi,

that's no surprise if you don't provide a track sample.

Hi,

Sorry I didn't know, is this could help?

granturismo4_tracks.rar

[shak-otay]

Thanks. Many unknown blocks. Got 82 sub meshes which look like so:

 

[jmancoder]

Looks like someone already mapped out most of it:

https://github.com/Nenkai/GT-File-Specifications-Documentation/blob/master/Formats/PS2/GT4/GT4CourseData.bt

https://github.com/Nenkai/GT-File-Specifications-Documentation/blob/master/Formats/PS2/GT4/GT4_MDLS_ModelSet.bt