Manufacturers specify tire pressures for a few reasons. Tires wear dramatically quicker if they are either under or overinflated. Also, tire pressures that are severely off spec can create handling problems or lead to sudden, catastrophic tire failure. Over-inflated tires make the ride choppier and reduce traction. So, smart riders keep track of their cruisers' inflation status. However, a common complaint we've heard from riders who pay attention to such things is that the cheap pencil tire gauges are notoriously inaccurate, varying as much as a couple of pounds for each reading. The more accurate dial gauges are large and can be knocked out of calibration with rough use. So what's the traveling cruiser to do?