Created these tyres for my Carrera Structo Jeep Renegade Tyres in 123D and test printed in polyflex on an Ultimaker 2+
This model is now 34 years old, as are the original tyres. As such they are cracking and have a flat spot.
Grab a copy here: http://www.thingiverse.com/thing:1480981
This model still needs new differential gears before it is road worthy again, that’s a future project.