Originally Posted by JAG Racing

Yes - I true them to about 60mm - main benefit is "gearing" and second benefit is shorter sidewall is more firm - better cornering.

If your competition is not blowing you away out of the corners I would not bother then. Like I said the main benefit is gearing your engine to stay at peak HP range. The competition I run with the majority true their tires. You can also provide better "overdrive/underdrive" action by truing the front tires a little different diameters.