iRacing.com is currently in maintenance mode while it deploys the new season 4 build update.
The service should be up and running again by about 18.00 BST when you will be able to not only check out all the updates and fixes but you will be able to drive around the legendary Le Mans 24H circuit.
If you really cant wait to have a look at whats new there is a quick first look video by John Sabol you can check out,
Or the iRacing offline Test Drive Mode – https://testdrive.iracing.com/login.html
But if you are going to hold off until the new build goes live then why not check out the full change log by – CLICKING HERE
and seeing which update you want to tryout out first.
To find out more about iRacing.com follow this link – http://www.iracing.com/