Question about Sram 850 8 Speed Cassette 11-32t Mountain Bike

# Bicycle Tires Tube

How do I know which bicycle tires tube my wheels need?

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Look at the side of the tire for a series of numbers

Posted on Nov 05, 2008

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As above but if the numbers are in decimals (26 x 1.1) vs fractions (26 x 1-1/4") you're looking at two different tire standards. The "26's" in this example specify very different rim sizes.

BTW: that number is a loose approximation of the outside diameter of the inflated tire.

Tubes being flexible, you can get away with intermixing them to a degree but tires won't be the same. The second number is an indication of how wide the tire is that it will fit.

Take that "x XX" piece with a grain of salt as it varies widely bewteen tires and manufacturers. One company's 700 x 23(mm) may actually be narrower than another's 700 x 21(mm).

You don't really want to exceed the capacity of the tire to accept the tube when it's inflated so I always aim somewhat to the small side for tubes (they stretch). In fact, to reduce rolling mass you can run smaller or thinner tubes.

Posted on May 03, 2010

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Yes, the information should be on the sidewalls of the tire. Good Luck!

Posted on Jun 11, 2009

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Posted on Jan 02, 2017

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## Related Questions:

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front is, rear not so much . might be wise to haul it to a bike shop and let them do it

May 28, 2016 | Cycling

### I have a Schwin Solution FS AL mountain bike. I would like to put road tires on it. It now has 50-507 (24X1.95) on the side wall of the knobby tires. What road tire would fit?

I have done a similar thing with my mountain bike. The first number is the size of your wheel. The second number is how thick your tire is. You can get any road tire that has a "24" in the first number of the 24X***. Depending on the number after the 'X' you will probably need to get an inner tube that falls within that size. Most of the inner tubes will have a range for that second number. If the number is too large the inner tube will not fit inside the road tire.

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### How do i fix flat tires for the 36" john deere stake wagon?

It should have innertubes like a bicycle. Just take the wheel off and use a flathead screwdriver to pry one side of the tire off the rim. Be careful to not damage the tube when doing this. Once u have one side of the tire over the rim you can pull the tube out. You can use any bicycle tube repair kit to fix any leaks you find. Easiest way for small tubes like this is just fill a sink with water, air up the tube and put it under the water to find any leaks.

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### What size inner tube do i need?

To find the correct size inner tube for your bicycle, first take the wheel off. Then you should measure the width of the rim and write this down for reference. Take this to any sporting goods store or a Walmart and check the bicycle section for the correct size tire.

Sep 16, 2011 | Cycling

### Repeated flat tires even after changing to a new tube

Find the cause and eliminate it before feeding a new tube to that thorn or sliver of glass. Sometimes we pinch the new tube while installing it, too.

Lots of videos on Google: search "fixing a bicycle flat tire"

Mar 05, 2011 | Cycling

### How sohuld I take care from my bikes tires?

It is important to get your tires checked from time to time. Second only to wear and tear resulting from dirt,the biggest problem cyclist encounter is with tires. Many inexperienced cyclists tend to ignore the tires. This can lead to dangerous issues. Bicycles tubes are made from a porpus type of rubber called buytl rubber, which allows air to slowly seep out. If tires are not regularly re-inflated to proper volume, they will be to soft. Apart from being much harder to pedal with, soft tires also lead to rim, tube and bicycle wheel damage.Soft tires wear out much faster, and can pop unexpectedly,leaving you stranded. To ensure that tires are propely inflated, pump up road bike tires before every ride, and check mountain bike tires every week. Use an effective pump, ideally ,a bicycle pump with a build in gauge, and observe your bicylce manufaturers information about recommended tire pressure.

Dec 21, 2010 | Cycling

### Unrepairable inner tube

True Goo inner tube sealant! Go to a bicycle repair shop with your stroller, and honestly, have all the tires shot up with this goo and then pumped up to your desired firmness...

I have a different jogging stroller, but I know the Maxi Cosi's Mura has the same air pump access as other bicycle tires like my jogger does. I kept getting flats, and this goo has kept my tires firm for 6 years now, I used to have to bring along a pump, but never again after this repair, it plugged up a small leak for one of my tires that kept going flat quickly and keeps the others from the eventual softness that was recurring.

Aug 23, 2009 | Maxi-Cosi Baby Gear

### Not working

When you remove the tires while changing inner tubes, do you run your fingers through the inside of the tires to check for thorns, wire, nails or other debris before replacing the tubes? Also, check to make sure your rim strips are adequately covering the spoke nipple holes in the rim. Sometimes just a little bit of a hole left unprotected can damage a tube. Lastly, sometimes you will just get bad tubes. It happens.

Jul 27, 2009 | Blackburn Mountain Air Mountain Bike Pump...

### Needs new tyres Bike is KRONOS WheelsVuelta USA ETRTO 559x 21 DIN Alloy 6063 T6 PLUS Airline 1 from Grandma for Grandson's bicycle

Take one of the wheels to your local bicycle repair shop and they can match the tire for you. If you take both they will change the tires for you and check the tubes all for a nominal fee.

Jun 25, 2009 | Cycling

### Problem with tires ,air is escaping

Pick up a kit for bicycle repair. Take the wheel off, deflate, pull the wheel from the rim and remove the tube. Pump the tube up a little, place under water and look for the bubbles. Once you find the bubbles, patch with the bike tire repair kit, deflate, put the tube back in, reattach tire to rim and inflate.

Apr 10, 2009 | Bertini Baby Gear

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