The benefits:
Taller gearing when converting from a smaller diameter tire without the common issue of the larger diameter tire having higher rolling resistance and more mass.
Tall skinny tires have a contact patch that is longer than it wide. Giving it better traction than a smaller tire of the same width.
Taller tires have less deflection due their larger diameter. lowering rolling resistance.
Higher tire pressure designed for a tire with a smaller sidewall.
That is the concept. Will there be more weight? The specs i know of are only for the wheel, which is 15lbs vs the lightweight 11lbs Insight wheel. Will the extra weight negate the benefits of a large corporation engineering a tire specifically for low rolling resistance with millions of dollars in R&D budget? Absolutely NOT! what a baseless thought!
