![]() For a rim brake bike, the rider would also have to consider the clearance through the brakes. The rider has significant clearance here also.īrake bridge (even though the brakes aren’t mounted here on this bike). This rider likely has clearance for a 40mm or 45mm tire. The current tire size on this wheel is a 32mm. The widest tire you can reliably run leaves about 2mm of clearance on either side of the tire. The pinch points are usually the fork crown, rear brake bridge, and rear triangle by the dropouts. The first step is to figure out what size tire your bike can handle. We will talk you through your options to help you make the perfect selection. Your preference, personal experience and bike tolerances are part of the final consideration. Guidelines for Selecting A Bike Wheel Rim Sizeīelow are the soft guidelines we think about when designing wheels. Or we use lightweight 29″ rims that are only available in disc brake models, which may have tire pressure limitations, which may or may not matter for your set-up. To create a gravel-ready set up, we borrow wide rims from road cycling with features that aren’t needed, such as aero performance. ![]() Finding these rims with tubeless compatibility is even more challenging. I think the foremost reason is that there aren’t many true gravel (or all-road) rims available capable of handling tires 28-45mm, especially in rim brake models. Gravel Riding Gets FoggyĪs we get into gravel riding, things get a little foggy. Tubeless compatibility is also a game changer. In fact, they’re more important, I think, because you’re riding on a larger surface area (but that’s a whole other topic for another article). The same rules apply to selecting a tire as before: tire casing, thread count and weight still matter. The benefits include more stability while descending, further dampening of road vibrations and for you aero-worshippers, better aero performance (less wind turbulence where the tire mates with the rim, and often a toroidal, or tear drop, shape). Larger cycling companies are offering wind tunnel data paired with these tire sizes. The upside is that this also means there is plenty of room to geek out! And boy do we like to geek out! Road Cyclingįor the most part, road cycling has settled on 25mm and 28mm tires as the ideal sizes to mate with rims that have a 20-21mm internal width. We’re here to guide you through that process. There are no hard and fast rules, which means you can experiment and lean on experts to help you make informed selections. This leaves a lot of gray area and also plenty of opportunity for you, as the consumer, connoisseur and rider, to weigh in. The truth is that we, as an industry, are still trying to figure things out. Sometimes manufacturers even provide different information for similar profile rims. Yet these changes are coming with very vague information from manufacturers about how that rim interfaces with the tire and impacts your ride. Some models of rims even come in several widths. ![]() Available now.Over the course of the last five years we’ve seen rim profiles change dramatically with the most notable change being in width. ![]() The Pathfinder is tubeless ready and retails for $45 each. They’ll be available in three sizes, each in black or tan sidewalls. Specialized boasts that this combo has four Dirty Kanza 200 wins. Underneath is their BlackBelt puncture protection layer, followed by three layers of their 120tpi Endurant casing construction so it’ll hold up to roots and rocks without getting sidewall tears. It’s all made of their Gripton compound to provide solid traction in all directions Diamond shaped darts fill in the transition area, with slightly larger versions spaced a bit more apart on the outer cornering edge. In fact, they say it’s for rides when you’re rolling on road and off in roughly equal parts.Ī smooth center tread ring provides contiguous rubber for smooth rolling. The latest tire in Specialized’s adventure lineup is the Pathfinder, and it’s designed to bridge the gap between their very fast rolling, minimally treaded Sawtooth and the knobbier (for a gravel tire) Tracer. ![]()
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