Standard Bike Inner Tube, 42mm Presta Valve, 4 Pack

Was worried due to other reviews, but all four tubes are great, and matching! The packaging on my set was sealed with a "THIS IS A SET, DO NOT SEPARATE" sticker.Well constructed, Zero bad forms or seams. Stems are solid and all held air. Fit:Fits perfect on my 37662'sAir retention:I should have had Presta all along. The valves are so much higher quality than Schrader and easily inflate/deflate at your command. Why did you pick this product vs others?:I've had the same Continental TopContact tread for years and they've held up great. Figured their tubes would be just as good, and they seem to be. Functionality:If upgrading from Schrader, do buy the rim adapter grommet. They come in different types; I bought the plastic ten pack and they work well centering the skinnier Presta valve body to the Schrader hole.

I wanted to write this review as when I was looking to purchase inner tubes, there were several horror story reviews of inner tubes exploding, etc. Maybe they had a bad set of tubes, but I have found these tubes to be excellent. The presta valves are very well constructed and they are installed well. The dust caps screw on nicely and tighten at the end. They hold pressure for several days at least. I check them about every three days or more, and they only lose about 5-7psi from 60psi and 65psi. Excellent inner tubes and I highly recommend them.In the past, I purchased tubes from a major bike manufacturer. They were not nearly the same quality as these tubes. On two occasions, the presta valve assembly came loose! Also the dust caps did not tighten down properly, they seemed to be stripped.Dont believe the hype of the bad reviews, these are superb inner tubes. I highly recommend them!

I've never had one problem with Continental branded butyl tubes. These are built nicely and with stem nuts which is a big plus in my opinion.I only have one wish. I wish the Presta valve shafts were compatible with Clik valve systems, I'm not going to fault Continental for that, hopefully they address this as Clik valves increase in popularity!

Valve core is removable, but the cores on 3 of the 4 tubes I purchased required almost enough force to snap the valve core in 2 using needlenose pliers. My core removal tool could not provide enough torque. Way too tight. The tube itself is good. Dial back on the car mechanic garage air impact wrench strength core insertion.

Just mounted these on my gravel bike with 700c x 40 tires. No issues. I bought a 4 packs for spares, but I used two of them and they have no issues with holding air or anything like that. The plastic valve caps are pretty cheap, break easy. I broke one putting it on, so i decided to just not run them at all. Reduce plastic waste that ends up on the streets.

Immediately taking one out of the box these seemed thicker than my other tubes. I ordered these because they have removable valve cores. I put sealant in my tubes, which seem to keep the air pressure longer.About 100 miles so far and no problems. Compared to other tubes this size, the price seems reasonable.I don’t believe you will be disappointed with these tubes. My advice is to put air in all to check for any leaks before installing.

Reliable quality. Tubes fail for a variety of reasons, and patches and liquid sealant don't resolve all leaks. Keeping extra tubes on hand is very convenient.

I am a daily commuter (~40mi/wk). I bought other tubes in the past, and they would never last. I bought a four-pack of these Continental Cross tubes, and I was hooked. They are firm, thick, easy to inflate. The tires don't seem to lose air like thinner tubes tend to do, and these mount easily. The roads I ride are littered with glass, hardware, sticks and rocks, but these tubes are up to the abuse!I have gotten a few pinhole punctures due to debris, but I have yet to attempt patching. I'm confident that these tires are robust enough to hold a patch well. I used up my spares from my first order and immediately ordered another pack. If you are serious about riding, these are the tubes for you.

Great price for tubes. It's what I run (700c) on my touring & city bikes. Exactly what I expected quality wise from Conti - except the free sticker which was BOGUS. I always wanted a Continental decal to put on my tool box... maybe next time.

Two of the four tubes just exploded after 15 to 20 minutes of sitting after installing and inflating to 65psi. The other two tubes are still okay after 4 hours or so, we'll see how they are in the morning.

Received 4 tubes but the sticker it claims to include was not delivered.