Category Archives: Tires


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 … Continue reading

Posted in Tires | 38 Comments

The Enduro Allroad Bike

Last year’s Oregon Outback was a great test for the ultimate gravel bike. The course consisted of 1/3 rough and soft gravel, 1/3 smooth gravel and 1/3 pavement. The situation is similar to our favorite local rides: We leave from … Continue reading

Posted in Testing and Tech, Tires | 74 Comments

Compass Tires: Standard vs. Extralight

Compass 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 Panaracer … Continue reading

Posted in Tires | 42 Comments

Research & Development

Over the last decade-and-a-half, I’ve thought a lot about product development. Long before Bicycle Quarterly and Compass Bicycles, I was involved with several companies as a technical writer and translator. Part of my job was writing instructions, so I got … Continue reading

Posted in Testing and Tech, Tires | 43 Comments

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 … Continue reading

Posted in Testing and Tech, Tires | 19 Comments

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 … Continue reading

Posted in Testing and Tech, Tires | 124 Comments

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” … Continue reading

Posted in Tires | 21 Comments