Hello Darren @1318980 first of all thankyou so much for showing interest in my project. 
i think i somewhat got what you’re trying to say. In my case the spokes are intersecting with the outer tyre ( tread ) part. So my approach for modelling is that first i am creating normally my tyre and then i am creating a cylinder just the same diameter as the end of the spokes and assembling them both.
So firstly is my this approach correct ? I hope its not an issue if the MRF region is intersecting with the spokes or tyre.
Check out this link for the above geometry ( tweelrot_asm ) i am talking about and if its correct or not
Now coming back to what you suggested is that along the spinning axis if i extend my Cylinder region it might work correct ? I will model it and share over here if still meshing error occurs in that. Please keep checking this Forum Thread, i would really require your help throughout the process
Thankyou so much to complete Simscale team once again!