Is there a left and right tire for the drag radials. I just got mine today and all it says is, Mount this side inside. But the tires have the exact same tread design.

 

What kind of drag radial did you buy? If it is the BFG, then it doesn't matter what side (left or right) it is mounted on, as long as the correct side is mounted inside (like the tire says). And it is a good idea to mark the tires and swap sides (from left to right and right to left) every 1 or 2 times that you use them. This will help them to wear more evenly and last longer.