I had same visibly issue. my ct just had basic OEM mirror. So I purchased a wide rearview mirror from eBay $5-$20. but you can search amazon, any auto store. it clips on easily & fits perfect between sun visor. (300mm convex). I able see my entire back windows, & rear side door windows, no blind spots. giving ability to maneuver without turning my head. also fold the headrest will help too.