Does a drum to disc conversion increase or decrease wheel offset?

[Josh69]

Based on my current info, the Touring Classics kit rotor is .300" thick. I'm not sure which one I need, so I would verify if you need the hybrid or C5 kit for your app and get that measurement directly from them.

Considering that it uses the stock drum brake spindle and drum hub, which is machined down to fit inside the rotor hat, the only affect to your track width will be the difference between that measurement, and the thickness of your drum.

I think that theoretically, if you take that difference into consideration, and make sure that the wheel spokes clear the caliper (using the template on their site), you should be fine.

We should be able to either make a spacer if the discs increase the track width to take up the difference until we get discs on, or if it's nominal, just live with it. If the discs actually decrease track width, then you will have to determine how much room you will have to move the wheel inboard. You can start with a slight bias towards the fender lip with adequate clearace and know that it will move inboard once the discs are on if that is the case.

I am planning on using 18x8" wheels up front, with a 255 width tire at the maximum, so I should have plenty of room.