connecting these two meshes together I want to neatly connect these two meshes together (the spokes on the rim)?
How can I do this? 
Hi everyone, I made a new rim and did what you say, but if I want to bridge the short sides it will be somehow crossed (see photo). Tried everything but couldn't get it done. What am I not doing right?
First, join your 2 objects with CtrlJ.
Then you can use the LoopTools &gt; Bridge. First thing, open the Preferences panel and activate the addon called LoopTools, then:

Bevel the inner edge loop, cut a hole:



Select the edges that you want to bridge, right click &gt; LoopTools &gt; Bridge:



Tweak the factors in the Operator box (Segments and Strength):