Nasa Super Touring and Time Trials Tire Templates for Section Width Rules
226mm, 257mm, 266mm, 282mm, 300mm, and 315mm
If your 3d printer has a large enough build volume, you can print these. The 226mm is smallest and fits on a basic Ender 3.
The DXF files are available also, so that you can get them cut out of whatever material you want, using laser or waterjet cutting.
You'll receive all 12 files.
Print Flat, no support or adhesion needed
60% Infill or more recommended