Not sure what size wheel the slims come with, but I think my 08 deluxe had a 150 in the rear. I removed the rear wheel and installed a 200 without any issues.
I've done some research on this subject and read some threads on this subject and yes it can be done. Im looking to switch the opposite way, I have a 2009 XBones and want to swap the rear wheel for a thinner wheel and tire. One off of a Slim is what I am looking for. If your interested in a trade let me know of course the fender struts would be included. My rear wheel has 1500K miles on it.
Does anyone have pics of a Slim with a 200 rear tire, or a CrossBones with a narrow 150 (Slim)rear tire? Sorry to hijack your thread just don't want it to get lost, I know there are some people out there wondering the same thing.