Buy “Sunlite Bicycle Tube 12-1/2 x 2-1/4 (1.75) Angled 70 Degree SCHRADER valve Bike Tubes Sports & Outdoors” Online
This tube has a 70-degree angled brass valve, which makes filling the tire much easier. I used this tube on a jogging stroller 12″ wheel, and it was much easier to get the pump head on this valve, with no need to try to fit the pump head into the very small space within the wheel spokes. The valve does not stick out very much, maybe about an inch, but that makes all the difference. This is also very thick rubber tube, much heavier than the old tube I replaced. If you’re replacing a similar tube, and the valve access is tight, consider spending the extra $1 or so to get this tube. One other tip if you’re not experienced at replacing an inner tube – after you get the tube in and reseat the tire on the rim pump up the tube one or two strokes just to give it a little shape. Then hold the valve and push it into the tire a few times to be sure the tube isn’t pinched under the tire rim. Finally grab the tire and rock it back and forth as you go around the rim, which will help seat the tube. Pump it up slowly. If any portion of the tire bead starts to lift, let the air out and start again, as the tube is still pinched under the tire bead at the spot where it lifted. One more tip – talcum powder (baby powder) – sprinkle some on the tube before installing. It helps the tube slide inside the tire, making it easier to seat the tube. Check it out!
Sunlite tube, 12-1/2×2-1/4 70 Degree angle Schrader valve
Sunlite Bicycle Tube 12-1/2 x 2-1/4 (1.75) Angled 70 Degree SCHRADER valve Review
I bought this tube as a replacement for one of the rear tires of the Phil & Teds Classic V2 double kit stroller. The tube fits perfectly into the tire of the stroller and it is also made by Kenda as the same as the original tube. The original tube has 12-1/2 x 1. 75 x 2-1/4 printed on it. The key is the middle number which is (1. 75). Before buying this tube, I bought another tube 12-1/2 x 2-1/4 by Forte at a local bike shop. It didn’t fit because it was too big. This tube works great for my stroller. -Read Reviews-
TUBES SUNLT 12-1/2×2-1/4 ANGLE 70d VALVE
This wasn’t the cheapest inner tube but I was willing to pay a little more to get angled valves. I have a 3 wheeled golf push cart and one of the tubes went bad where the valve body joins the tube. It was a pain to get the bicycle pump nozzle on and off of because there’s really no clearance between the end of the valve and the hub. The spokes are coming together at the hub which further decreases the amount of space. I’m convinced having to bend the valve body to get the pump’s nozzle on and off contributed to the tube’s failure. Having now replaced all three tubes I can’t for the life of me understand why an angled valve isn’t standard on small diameter wheels like this.