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

[Mustafa]

11 hours ago, jmancoder said:

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

Hi,

Sorry I don't know what are these or how to use.

[shak-otay]

You need the 010 editor to make use of it. (The free trial version expires after 30 days. So it would make more sense, imho,  to convert the bt templates to bms. That's on my list since years.)