Here's something new I've whipped up. Similar to the Pentagram models, except I've just cut the rim model and put a disk instead, hence the name Diskade.
The Diskade model allows independent designs for each wheel, with an easy to edit circle design for the disk, as well as the reflection map being applied to the disk (which is a bit weird at the moment, I haven't got the hang of scaleing). The stock PCJ brakedisc layout is still there for those who like to work with it. This model also has a modifyable windscreen.