|It says so right on the packaging.|
Gravel bikes have breathed new life into the 650B "demi-balon" sized tire, which the old conversion scene knew was very close to a 700c X 28mm tire in diameter. This makes it a good alternative choice for the gravel bikes which have been proliferated in the last few years by several manufacturers. Okay.....cool. But why?
Well, going back to the 40's and 50's, it was for comfort, vibration damping, and grip over bad roads. With the advent of gravel riding, riders have been seeking out similar attributes for their rigs. Now with Compass Tires and WTB, along with a few oddball, rare tires, riders can now enjoy the similar benefits that riders did 75 years ago. The main difference with the Horizon tires is that they are part of a tubeless tire system, which other tires in this category are not.
|Tire, rim, rim strip, valves, and sealant all by WTB; Image courtesy of WTB|
Right now I am looking at trying these out on my Raleigh Tamland Two, my Standard Rando, and my Vaya. The thing I will be looking hard at, besides the obvious tire clearances, is where the bottom bracket height ends up being at with these three bikes. Obviously, if WTB is right and these tires are akin to the diameter of a 700 X 28-30mm tire, I will be lowering the bottom bracket heights on all three bikes which may not work out so well. Especially in the case of the T-6 bike which has a 75mm drop, but we will see. Obviously, I am going with a disc brake hub and rim, or I would slot these into my Black Mountain Cycles bike for a test run, but that won't be happening with these wheels.