"Frank Taylor, Jr." wrote:

In my case, the reason I would like to use platinum plugs is because they
last a lot longer and do not have to be re-gapped like normal plugs do.


I'm surprised that's true. The standard plugs in my cars and street
bikes last 50,000 miles - forever AFAIK. We used platinum plugs in very
high output engines (150-200 HP/Liter) because ND and NGK gave them away
by the handful so they could advertise that winners used their plugs,
but I never saw any numerical evidence they improved performance or
lasted longer - not saying they don't just that I never saw it demo'd.
Naturally YMMV.