I am not to familiar with the workings of Photoworks so i did thes rims and rendered it a few times just to get aquented with the different materials and light settings PW has to offer. Enjoy and C&C is welcome!
Just Rim:
http://img91.imageshack.us/img91/4869/rim8pa.jpg
Rim and Basic Tyre:
http://img133.imageshack.us/img133/2746/rimtyre9hq.jpg
http://img140.imageshack.us/img140/5246/rimtyre21lh.jpg
P.S. can anyone tell me how you can create new materials in PW for i cant seem to figure it out!