Category Archives: Tires


Mounting Tires on Rims with Deep Wells

Sometimes we get a call or an e-mail from a frustrated customer: “I have a brand-new set of your tires, and both wobble when I mount them on my rims.” In most cases, it is not the tires’ fault. Usually … Continue reading

Posted in hubs/rims, Tires | 41 Comments

The Downsides of Wide Tires

Since we have published a post about “The Dangers of Narrow Tires,” it is only fair that we look at the other side of the coin. What are the disadvantages (or even dangers?) of wider tires? I can think of … Continue reading

Posted in Testing and Tech, Tires | 72 Comments

The Dangers of Narrow Tires

It is unfortunate that most “road” and even “hybrid” bikes are sold with tires so narrow that you cannot cross streetcar tracks at an oblique angle without risking a fall. The Seattle Times reported recently about a rail line that … Continue reading

Posted in Cycling Safety, Rides, Testing and Tech, Tires | 27 Comments

Compass Tires in 26″ x 1.75″

Compass Bicycles is introducing our new Compass 26″ x 1.75″ tires (42 – 559 mm). Many readers and customers have asked for a 26″ version of the much-loved Grand Bois Hetre 650B tires. This would allow riders of mountain bikes, … Continue reading

Posted in Product News, Tires | 24 Comments

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 … Continue reading

Posted in Testing and Tech, Tires | 13 Comments

How Durable are Grand Bois Tires?

Tires are the most important component of your bike. Supple high-end tires roll faster and are more comfortable. A set of great tires transforms your bike’s feel. The down side is that high-end tires can be more fragile than sturdy … Continue reading

Posted in Our Bikes, Product News, Testing and Tech, Tires | 23 Comments

Tire Sizes

Making tire molds continues to be an inexact art. For decades, riders have complained that many tires, especially wider ones, do not run “true to size.” In most cases, tires were narrower than their stated width, which caused Sheldon Brown … Continue reading

Posted in Product News, Testing and Tech, Tires | 10 Comments

Grand Bois Lierre 650B x 38 mm Tires

We received our first shipment of the new Grand Bois Lierre (Ivy) 38 – 584 mm (650B x 38 mm) tires. I put a set on my Grand Bois Urban Bike and went for a ride. With the shallow “negative” … Continue reading

Posted in Product News, Tires

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 … Continue reading

Posted in Testing and Tech, Tires | 8 Comments