Road bike, no flats/photo: J. Ferris
Mountain bikes, in general, have fewer flats than road bikes. You can ride for a long time on your mountain bike before you have to change or patch the tube. This rider has, over the years on a mountain bike, had one tube blow the side wall out of a tire, and maybe 3 flats. Not bad, considering that it’s been 15 years plus of riding about on a mountain bike.
My road bike, on the other hand, has had, in two years, five flats. It is most disruptive to my ride plans to get suited up and discover that my trusty Roubaix has a flat rear tire. It’s always, up to now, been the rear tire. How come so many flats?
The mountain bike tire compound is different than the road bike tire compound. In short, it’s thicker, and tougher. The knobbies on it count for a lot too. The mountain bike manufacturers figure that the bike and tires will be subjected to a lot of hard hits, rocks, and sharp things while we are riding off road, through the woods and trails. They build the tires accordingly. A road bike is built for the road.
While there are obstacles on the road–glass, bolts, odd parts that have fallen off cars– they are, for the most part, avoidable. Road bikes are concerned with weight to a much greater degree than mountain bikes. Some mountain bike wheels and tires weigh more than entire road bikes. If you take a look at Bike, Velonews, Bicycling, it’s easy to find that each item that is written about, or reviewed, has the weight, in grams, specified. Nothing is added to a top end road bike that is unnecessary or that weighs too much. Professional rules actually have to dictate that the bikes weigh at least some specified minimum weight. One cannot ride a feather with gossamer wheels in a sanctioned road race.
The tires on road bikes are thinner, as are the tubes. Anything to avoid packing on a few extra grams of weight. The tires do need to be tough, and the good news is that they are getting tougher. There are also inserts available to put between the tire and the tube, which this Boomer finally put into the back tire. The science behind road bike tires is pretty complex. They have to be light, but able to withstand the crud on the roads. What is being done is a better mix of materials, tighter, cross linked weaves, and the introduction of carbon and Kevlar into the mix. These tires are being advertised as being extremely resistant to punctures. Some reports have riders going for 2,000+ miles with no flats. That’s pretty impressive.
If your road bike tires have a lot of miles on them and you are in the market for a new set, consider a set of the new, tougher tires. They aren’t overly expensive, and they just may save you a few tubes and lot of lost time enjoying a great ride. It’s got to be worth it to just mount up and ride. Ride on!
Bicycle Maintenance:
How To Fix A Bicycle Puncture


Cycling fans have a busy summer coming up. This is the time for quite a few national road race championships and grand tours. For Boomers, it’s a great time to see how the less mature are carrying on. Here is an update on the 
Mountain bikes are an ever evolving species. Anything that stays static for too long tends to wither. The mountain biking community, and the mountain bikes they ride, are anything but static. The technological advances involve physics, and materials. Physics determines whether or not the material will stand up to the rigors of being part of a bike that is likely to take quite a bit of stress.

