Tires may very well be the most overlooked part of a scooter. But ask any professional and they’ll tell you that along with suspension and brakes, your tires are the most important component on your scoot. Unlike a car that has four wheels (Really!? Since when?), scooters rely on just two (narrow) wheels touching the road to not only maintain traction, but to transfer power to the ground and keep you upright. Your scooter tire has to be soft enough to maintain traction in all conditions, yet hard enough to last more than a few hundred miles. That’s why today’s motorcycle and scooter tires are quite a bit more sophisticated than some people might think.
Most owners are largely concerned (and rightly so) with getting the most mileage out of their tires. Tires and tire changes aren’t free. We’ve seen quality, name brand tires wear out in as little as 3000 miles. But keep in mind that, generally speaking, the longer a tire lasts, the harder the rubber. And hard rubber doesn’t tend to "grab" the road as well as softer rubber. Additionally, how you ride can impact your tire’s lifespan, as well. A 30 mile daily commute, straight shot down Highway 50 is going to wear your rubber faster than short trips in town to the store or even a weekend ride in the "twisties".
So, as with many aspects of scootering, the "right" tire comes down to a matter of what kind of riding you are going to be doing. Again, generally speaking, your scooter’s manufacturer matched your scoot up with the best type of tire for the particular application. It’s best to consult the experts when considering switching tires. Now, how do you tell when your tire has reached its limit?
There are a number of factors and indicators to look for. The first is the tread-wear indicator that’s built into your tire. Typically, there is a small arrow (a triangle shape, usually) that is raised on the sidewall that points across the tread face to "bars" of rubber between the tread. When this bar is even with the surface of the tread, you’ve reached the recommended minimum tread depth. Most often, tire manufacturers recommend a minimum tread depthof 1.5mm. You can check this depth with a depth gauge or the old trick of taking a penny and turning Abe upside down and sticking him between the tread. If the top of the tread doesn’t come to the top of Abe’s head, it’s time to replace your tire.
Another thing to look for on your tires, especially on an older bike, or when considering purchasing a used bike, is cracking. Tires begin "off-gassing" the second they come off the assembly line and the rubber continues to degrade and breakdown forever. Eventually, as the rubber becomes dry and brittle, small cracks will form, usually on the sidewalls and along the tread valleys. This is bad and is a sure indicator that it’s time to replace your tire.
For this reason, the lifespan of a tire, regardless of mileage, is generally no more than seven years. You can actually check the date your tire was manufactured by looking for a 4-digit code on the sidewall. This code is stamped on the tire and is usually found near the D.O.T. stamp. The first two digits represent the week of the year the tire was manufactured (52 weeks in a year), while the second represents the year. So, "3808" would be the 38th week of 2008 (or the week of September 15th, 2008).
So, we know age and mileage wear out tires. What else do you need to know? Tire inflation, either over-inflation or under-inflation can cause uneven wear to your tires and reduce their service life. Under-inflation, in addition to making for poor fuel economy, will cause the face of your tires to "cup". The outer portions of the tread face will wear faster than the center strip. These outer strips are often softer rubber than the center strip (remember that it’s the outer strip that’s maintaining contact with the road in a corner). Under-inflation is often the cause of premature tire failure.
We see it all too often. Customers will bring their scoot in for service, only to find that they were 10-20 psi low or more. Often times, the air gauge actually reads zero! Yikes! It’s so important to check your tire pressure often. But many of us don’t think about it or don’t want to fuss with it. Not to worry. There is an easier way. Special valve stem caps (available at your favorite scooter shop) are designed to instantly show you, at a glance, if your tire pressure has dropped 2-3 psi from the recommended pressure. Trust me, they’re worth every penny.
A safe scooter starts with a good set of tires. Stop in today for a free tire inspection. We’re more than happy to do whatever it takes to keep you on the road and as safe as possible. Now, get out there and get scootin’!