Google-chrome – How to switch tabs in Google Chrome without a mouse

There's an extension that does exactly that:

Reload All Tabs

Features:

• Keyboard shortcut to reload tabs is bound to Alt-Shift-R
• Reload all tabs in all windows (enabled via options)
• Option to just reload pinned tabs
• Configurable keyboard shortcut
• Configurable context menu

It also sits in the toolbar so you could just click a button.

Found a solution on a Google Groups thread. Use AutoHotKey with the following script:

;; Wheel Scroll Tabs for Google Chrome 

#IfWinActive ahk_class Chrome_WidgetWin_1 
 ~$WheelDown:: 
 ~$WheelUp:: 
    MouseGetPos,, yaxis 
    IfGreater,yaxis,23, Return 
    IfEqual,A_ThisHotkey,~$WheelDown, Send ^{PgDn} 
                                 Else Send ^{PgUp} 
Return 
#IfWinActive

Note: I've changed it to Chrome_WidgetWin_1 because that's what worked for me. If that doesn't work for you, try changing it to Chrome_WidgetWin_0

Source