Schwalbe XXLight Bicycle Tube 1 5 2 35 Review

These are the lightest tubes I could find that fit 650B x 42mm Panaracer Gravel King tires. Not many LBS distributors or wholesalers sell them, thanks for making it easy!

I've got 800 miles on the pair without a single seal. Many of these kilometers are on gravel, dirt or country roads and muddy roadsides. They're surprisingly light, measuring just over a quarter in diameter (if space is an issue for you). I weigh 200 pounds and the bike and load is 32, I keep 60psi front and 65psi rear for good softness. a ride that still avoids pinching flats. (The tires I use are rated for 55-70psi.) I've had to fill them up less than once a month. The only reason I'm…

I used them on my 650b touring bike for a few years. They're very light, but you pay for durability and air retention. You'll need to top up the air pressure every few weeks, and if a sharp object punctures your tire, you'll have a flat tire simply because the inner tube is so thin. Heavy-wall tubing can withstand piercing through very small pieces of glass. Finally, you must be careful when mounting/dismounting tires with these inner tubes. I recently had a tire lever that slipped a bit when…