Continental Tubes 700x25-32 presta valve 42mm, Pack of 4

I wrote a pretty scathing review already. This product was defective by manufacturer. I want it replaced free. I installed both the front and back tire and the first or ride the front tire blew out. Luckily it did not cause an accident, which could have been dangerous on a road bike. Please see the defect in the photo attached and have the merchant replace it. Thank you. Eric

I happened to purchase these tubes to restock up on my backup inner tubes for my Felt F5 Road Bike. When it came time to use them, the first tube worked well, and lasted a few weeks (less than I would typically expect, but not horribly short) From here everything else went badly, the next two inner tubes each had loose stems, that did not fully seal properly, and I was airing up my tires pretty much every day I wanted to ride. My last tube had burst when I was pumping it up (The burst was just as I hit 100 PSI). The burst temporarily damaged my hearing, leaving a ringing in my ears for 25 minutes after. I would recommend if you are looking to buy these, look for a local bike shop, or another product on Amazon.1/5 Would actively advise against/would not buy again

I've been using Continental tubes for years -- 10,000s of miles in total. Lots of years I can get an entire season without a flat (Continental 5000 tires for the past two years). One thing I have noticed recently.... About 1 in 5 tubes will have a slow leak when installed, losing 20-30 lbs over night. At first I thought it was a defect in the seam of the tube. What I discovered is some of the presta valves are not firmly seated in the stem. For those of you that have been road biking longer than me (35 years), this is probably old news. So if you have a slow leak, get out your smallest Crescent wrench and carefully tighten the valve right at the very top of the stem where the threads start (see photo). Not too much, since you'll crush the valve. I've found that they are usually about 1/16 of a turn loose. Once tightened, the tube holds air great -- losing 10 lbs or so over 3-4 days. See you on the road.

This is the wide version of this tube. I've had problems with the 700x20-25 , but not the 700x25-32. The reason is I have 700x25 tires. More rubber (and thicker density) is better with butyl rubber. They weigh a bit more, but if you want reliability and safety go with the wider tube (700x25-32).

I have lived in my Brooklyn NY neighborhood 9 years and probably have ridden my bike 25 - 50 miles a week in that time. To a large extent on a bike path but also on streets -- in this time I might have 2 or 3 flats a year. I bought a 4 pack of these Continental tubes a few months ago. One tube had a busted valve from the get-go -- okay. With the other three I have had about ten flats in that time (after patching them). Seems I get 2 or 3 rides average from each tube. Flats do no seem to be from a puncture but from a small split in the rubber.. I have inspected the wheel and tires and see no good reason for this. Pain in the...neckGonna seek out a more expensive tube -- you get what you pay for etc, etc. etc.

I recently installed the tire. I inflated slowly to the minimum pressure based on its specification. My rim was clear of any metal burrs or sharp edges. Bike was just sitting for about 5 minutes then I heard it POP. Attached is the photo. Fortunately, the item is a 4 pack and I had an extra one to try. The second one did not pop. I assume it is poor quality control.

For the last 3 years I have been buying these tubes on Amazon. Love the brand, loved the quality, **until now**. Out of the four tubes in this package, only one was useable. I purchased these in February 2020, but didn't need to replace a tube again until September. Three out of four were unusable, because they were punctured right out of the box. I couldn't inflate them. I could not ride my bike until replacement tubes came. Weirdly, the cheap Chinese patches I purchased at the same time wouldn't even stick to the rubber. BTW I thought that these were German Quality. They are not. They were made in China.

I had to change a tube due to a flat. Replace my old tube with one of these. Only put in 80 psi and moved the bike a few feet and the tube exploded. Sounded like a shotgun. Completely unseated the tire. Installed the second tube and aired it up to about 40 PSI and the tire (Continental Gatorskins) won’t stay seated to the rim. It like the explosion expanded my tire???? Continental, how are you going to fix this? Now I’ll need a new tire????

OK here goes my crazy controversial tube philosophy: The Tube's job is to hold air - nothing more! Its the Tire's job to prevent debri from puncturing the tube! If a nail or thorn gets past the tire - don't expect the tube to stop it.So what to do? If you race or ride up mountains - use the lightest tubes available - as long as the diameter is correct (eg 700C) you can run an 18mm tube in a 35mm tire with no issues (I just did this due to emerg repair). Yes the tube will be thinner - but again, don't expect the tube to stop a puncture - it just has to hold the air. If you keep getting flats, get thicker puncture resistant tires. You can also run sealant inside your tubes if you don't already have a tubeless setup.I run these tubes on my Trek Domane inside Vittoria Zafiro Pro 30mm tires. This combination works great.I run the same tubes in my Cannondale CAADX Cross bike with 35mm Conti tires - I run sealant in the tubes on the Cannondale as its a winter bike and I really don't want to puncture.Ok I want and said it - Ride on - Enjoy!

I generally use Continental Race or Race Light tubes, and have always been happy with their price/performance ratio. They also feature a removable valve core, which allows me to simply attach a valve extender when I need to install one on any my deeper rims.I took off a couple of stars off though, not because of the tubes, but because the title/description of what you get is a lie. Yes you get 4 tubes, but not the advertised tire levers which was a deciding factor for me to buy this package. Other reviewers also did not get the tire levers, so it wasn't a case of me just being unlucky.

We were disappointed when the package arrived without the tire levers. However, the seller responded very quickly to our complaint with a refund for the missing levers. Good after sales service!

Good

Seems like good tubes, however there were no tire levers.