Sorry for the late response! Martin and Omar are always swooping in with great advice tho, thank goodness!
Was Martin’s feedback able to help you out at all, @emacqueen?
To me it appears as though it is just an issue with the rotation of your plane and the array axis, but if that didn’t seem to help then we can troubleshoot other ideas.
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As well, the shading on your green tire in the image above leads me to believe it may need it’s normals flipped?It doesn’t quite appear correct to me.
If you are interested in trying that out, you can do so by selecting every face of that object in EDIT mode, and pressing “Alt + N” to bring up the “Normals” menu. 🙂
