Thank you about contacting us.
We do not support this feature in the RadTabStrip for WinForms. Actually, you can use the RightToLeft property of RadTabStrip to achieve a similar behavior, but when the control is in this mode the scrolling logic is changed, too. Please tell me how this feature is important to you and we may consider adding it in the future releases of RadControls for WinForms.
I'm looking forward to your reply.
the Telerik team