Quote Originally Posted by SmackedInATL View Post
Just so you know the "series" or tire height changes as a tire get wider. A 345/30 is not the same as a 325/30. I believe the way it goes the 30 is a percentage of the width of the tire. So sidewall height is 30% of tread width. Or something like that. That may be wrong(percentages part) but the principle of how the two change together is accurate.
Learn (or re-learn) something everyday!

I swear to God I've got 3/4" more sidewall on these 345s, they made a pretty big difference.