I took a set of 83mm/77a Centrax wheels and trimmed about 3/8" (10mm) off each side (keeping them centered) and reducing the width to about 59mm. Wheels seem to roll much easier, especially pumping up hills. Pile of trimmed 'thane weighed a full 8oz. If interested in having your skateboard wheels trimmed, that service is available, contact 4CrawlR@gmail.com for details. Currently offering straight 90* cuts that leave a sharp 90* lip or can sand a small or larger bevel on the edge. Also, for folks buying new wheels, you can order them and ship them to us and we'll re-ship them to you when trimmed/beveled to save on at least one shipment.   (53/70)