Bicycle Inner Tube, 700 x 35-40 (27 x 1-3/8) Schrader Valve 32mm, Sunlite

Bought these to replace a poor quality Meetlocks tube that sprung a leak at the seam near the valve, I also got on Amazon.The front tire I replaced with the Sunlite immediately after receiving it in Nov 2022 and it’s holding up great. Holds air pressure better than the Meetlocks that remained on the back tire.The second Meetlocks tube sprung a leak at the same seam this week so I’m about to take the bike out on its first ride with both Sunlite tubes. It held air well since I changed it a couple days ago when I’d intended to go out for a ride. I expect I’ll have to pump up the tires a lot less now that I’ve got both of these and no more Meetlocks.

I read lots of reviews of people complaining about these tubes, and I have quite the opposite experience. I installed the tubes correctly and they have been working fine. I even put 90 lbs of pressure and they still are going strong 2 months after being installed. Clean the tire before installing the tube, and make sure the tube is seated correctly inside of the clean tire, pump up and enjoy. The shipping was super fast and they arrived the next day and I was on back on my back in less than 24 hours. Cheap, effective, and quick. What more could you ask for?

Worked fine

I ordered two sunlite 700x35-40c schrader 32mm bike tubes to replace those aulful presta valve tubes I've had for three years. Finally decided to drill out my rims to accommodate the slightly larger diameter Schrader valve. My original 700x38c specialized tubes were still in good condition after 2,500 miles. These new sunlite tubes seem a bit more substantial. They filled the tire and seated well when pumped to 60 psi. On day two the tubes are holding pressure. Tomorrow, day three, I will ride 17 miles on our local paved bike trail. I hope these new tubes hold up well and will report back after I put some miles on these bike tubes.

These fit my bike as advertised. I don't know what makes a better tube. I've used expensive ones in the past and honestly don't see a difference. I'm a weekend rider so don't perfectly tune and balance my bike to run like a professional machine. Maybe I would see a difference then, but these were not expensive and worked well for me. The only negative is that the stems were almost too short for me. But that is on me for not measuring the old ones. The length is well identified in the listing. My rims are off shaped and require a pretty long stem to reach through. These just made it, the bottom of the cap threads only clear my rim by 1mm. Worth checking your old tube before ordering.

Not great tubes, 1st one I used already had a puncture before even riding. But for the price, ya get what you pay for.

I installed the tube and it held pressure for a few days until yesterday when I found the tire completely flat (wasn't even riding it). I inspected the tube and there was a split on the inside of it. The protective strip was there and there were no sharp edges in that area. The tire has the correct specs for the tube and was not overinflated. I replaced it with an identical tube. Hopefully it holds for awhile.EDIT: I believe the problem was actually with the tube protector not fully protecting the tube because I bought another brand and had a similar problem. I installed a high quality tube protector and no further issues. Upping to 5 stars.

I bought 6 of these tubes, including 2 replacement tubes enroute from Amazon as I write, that I would not have bought had I seen the cause of the first failure. I did read the reviews where others had problems, but I gambled with the tubes because of the clear description of the size and valve type and Amazon prime. I use my bikes at different homes very lightly. In this case, I had also put on a new tire. After 8 weeks use I had needed to add air twice, somewhat unusual at 3 miles a day. When I left for six weeks I left my bike parked in my living room and when I returned the tire was flat. I looked for punctures and found none in the tire. I foolishly ordered two more of the same tube (and a patch kit hoping to find a small hole) and the next day removed my tire and tube to check. Picture above shows a clear tear around the valve stem that might be expected with mis use of an old tube but NOT with a careful install of a new tube and new tire. I will buy another brand next time and will add another review if and when any of my other 3 tubes fail. One of my bikes is not used hardly at all so a better headline might have been "1 in 2 failed in 8 weeks".