The Index wheels utilize North's brand-new urethane formula from the Signal V3 wheel, but feature a tri-spoke core design to reduce weight. Index wheels come in two different sizes; this size is 115mm in diameter, and 30mm in width. This size will provide a larger balance point for manuals and fakies (going backwards), but will also give wider decks more left/right clearance. This means you'll scrape less during a fakie, and you won't have to angle your scooter as much when you carve transition. North supports all their wheels with a lifetime warranty that covers chunks, and de-hubs.