Just before wrapping this piece up, let me say a few words on wheel choice and safety. Wheels are purpose-built. A wheel designed for drag racing can be very light because it does not have to take the kind of abuse a road-racing wheel would be subjected to. Do not under any circumstances shortchange wheel strength for the job just to get a lower moment of inertia.
Lastly, tires: Because these are at a larger radius than the wheel, they can have a bigger influence for a given weight reduction. The way to check to see if the tire you intend to purchase is heavier than some of its direct competitors is to go online at www.tirerack.com and check out the tire specs. All the weights are listed. Yes, it really is that simple.
The "improvement" column shows gains everywhere for the lighter flywheel, except for speed at the eighth-mile.
Again, the "improvement" column shows lighter is better. Trap speeds were down at the end of the quarter mile due probably to excess engine temperature from so many back-to-back runs