Tires

Inner Tube Quality

Inner tubes often seem like generic commodities. One is as good as the next – so buy the cheapest one... I used to think that, too, until I started to see split seams, valves separating from the tube, and other mysterious flats that were not caused by "outside influences". Around...

Reviews of Compass Tires

When you design a product, develop it, test it and finally bring it to market, you wonder how it will be received. Of course, you are confident that others will like it as much as you do – you wouldn't have released it if it didn't meet your high expectations....

Rene Herse Tires: Standard vs. Extralight

Rene Herse tires are available in two versions: standard and extralight. What is the difference between the two? The difference is in the casing. The standard casing is already quite light and supple, but for the Extralight, we worked with our Japanese supplier to push the envelope further. These tires use...

Tire Pressure: Data and Details

A little while ago, I wrote about how new scientific research has allowed us to design wide, supple tires that offer the speed of narrow, high-end racing tires. The key finding is that above a certain threshold, increasing tire pressure no longer results in lower rolling resistance. While these new...

The Tire Pressure Revolution

Of all our research on tires, the most revolutionary finding is this: Tire pressure has almost no effect on a tire's speed. We did not believe it at first, either, so we've tested it numerous times. It's been confirmed numerous times, with different methodologies. The real revolution is not how you...

TPI and Tire Performance

Tires with supple casings are faster, more comfortable and simply more fun to ride. Most cyclists know this, but how do you measure 'suppleness'? A measure that often is used to describe the quality of tires is 'threads per inch' (TPI). The idea is that tires with higher thread counts usually...

The Actual Width of Tires?

Sometimes we get an e-mail or a phone call from a customer asking, "I bought the Compass 32 mm tires, but they only measure 28.5 mm on my rims. Why is this?" Decades ago, some tire makers cheated when stating tire widths. Why? To make their tires appear lighter than they...

How much faster are supple tires?

Improving your tires can make the biggest impact in the speed of your bike (apart from changing the motor!). The difference is especially pronounced for slower riders, whose wind resistance is less than that of faster riders. Most cyclists know that supple tires make you faster on your bike. But so...

The Art of Compromise

It may be popular to talk about "no-compromise" products, but the reality is that the best products involve a careful balance of features and properties. Take our new Compass tires... We could have made them lighter! The only place to remove material is in the middle of the tread. We might save...

Feedback on the new Compass Tires

As we get the first feedback from riders about our new Compass tires, it's nice to hear that others enjoy them as much as we do. Here are a few samples of unsolicited feedback: "I used the new Barlow Pass tyres on a route that included miles of rough railway trackbed....

Tires: How Wide is too Wide?

How wide a tire is too wide for optimum performance? Our research shows that wider tires don't give up anything on smooth roads, and gain a significant advantage on rough roads. This has been shown for tires up to 31 mm wide. It's now a well-established fact that wider tires roll...

Tire Wipers

Many cyclists are tempted by the performance and comfort of supple tires, but they are afraid that they might get too many flats without puncture-resistant belts and reinforced sidewalls. Tire Wipers improve the flat resistance of your tires without detracting from their comfort and performance. Few foreign objects are so large...

How Wide a Tire Can I Run?

Many cyclists want to ride on wider tires, but are limited by the clearances of their bikes. So they want to use the widest tires their bike can fit. How do you determine your bike's maximum tire width? You need a set of calipers (below). If you don't have any, bike...

Preventing Flat Tires

Every cyclist knows the sensation: You ride along, feeling at one with your bike and the world. Suddenly you notice your tire going soft, often accompanied by a hissing sound. Like Icarus, who flew too high and got singed by the sun, your euphoria is dashed as you come to...

Science and Bicycles 1: Tires and Pressure

Most cyclists are interested in improving their bike's performance, because rolling along at considerable speed while expending relatively little effort is one of the great appeals of cycling. Before you can improve your bike's performance, you need to know what makes your bike faster, and that is where science comes...