How to install Pcd 4x100 on pcd 4x113 without spacers

When you say without spacers or adapters, I assume you are talking about the backspacing of the wheel? In other words, how far in or out the wheel sits in relation to the hub? The 4x100 and 113 is the bolt pattern. Meaning it has 4 lug nuts that measure 100 mm. If your bolt pattern on your vehicle is 113, then 100 will not fit or vice versa. You may be able to get the wheel to go on but it will most likely be hard to get on and make noise as it turns.

Unfortunately the bolt patter is something that you have to stick with unless you are going to change it. You can get adapters that will alter this but that will change your backspacing as well. When you add an adapter for the bolt pattern it moves where the wheel sits out. This means the wheel and tire is going to sit further out as well. So if you don't mind this wider stance look then you would be fine. However, if you want to keep the edge of the wheel and tire at the same place, you will need to increase your offset.

I included some pictures to help. Let me know if you have questions. Thanks