Redirect 301 /tarifas.html http://www.centaurorentacar.com.ar/tarifas.php
Redirect 301 /tarifas_i.html http://www.centaurorentacar.com.ar/tarifas_i.php
RewriteEngine On 
RewriteCond %{HTTPS} !on
RewriteRule (.*) https://%{HTTP_HOST}%{REQUEST_URI}