Auto
Sent from my DROID RAZR using Tapatalk 2
5.13's work perfectly with my auto but I have a D44 front. A D30 pinion is going to pretty small and the ring teeth are going to be thin with that ratio so be gentle on the pedal off road.
By the way, do you have a DROID RAZR phone and use Tapatalk 2 to post on the forum by any chance? Just a wild guess.