A rubber torus shaped balloon which is inflated via a valve inside a tyre to keep it rigid.

learn more… | top users | synonyms (2)

34
votes
12answers
9k views

What type of tires can prevent goatheads?

We have a lot of goatheads1 in our area, and they have a tendency to do something like this to bike tires: Unfortunately, I ride a road bike (specifically a Kona Dew), so I have much smaller, ...
28
votes
8answers
6k views

How long should a road tyre hold its pressure?

How long should a road tyre be able to maintain a pressure of around 100psi, and what factors are likely to reduce this time? Background: My tyre pressures are consistently dropping to around 60psi ...
15
votes
7answers
1k views

Which kind of tube valve is the best?

What kind of valve is the best one, a Presta valve (6mm) or a Schrader valve (8mm). Which has the best reliability, which one is easiest to fix a flat on?
34
votes
11answers
25k views

Can I use a Presta tube in a Schrader rim?

I keep losing pressure in my tires, and among other things, I'm looking at the valves in the tubes. It's an old mountain bike with 26 inch tires. Can I use Presta tubes on rims drilled for Schrader ...
13
votes
9answers
8k views

Patch or replace tube?

Is it worth patching a tube on a mountain bike, or just replace it with a new one? There are a lot of 1/2" - 3/4" thorns here in Texas, and I use 26 x 1.95 tubes. Any particular patch type/brand ...
9
votes
4answers
3k views

Does the inner tube affect the maximum PSI?

If I have road tires that have a recommended pressure of 110 PSI and maximum of 120 PSI can I safely pump my tires up to that level or does the inner tube effect the maximum? I currently have the ...
8
votes
5answers
1k views

Slow leak on front cruiser tire

I ride my cruiser to the supermarket and back, using either a trailer or a basket over the front wheel for carrying groceries. The bike has developed a persistent slow leak on the front wheel, and ...
4
votes
4answers
231 views

Which tube size to prefer if several options apply?

I have 40-622 (a.k.a. 28x1.5") tires, and Schwalbe offers two different sizes of tubes - their models "17" and "19" - as applicable for that tire size. Ok, either one would surely fit well. But ...
2
votes
1answer
186 views

What size of slick tire should I buy?

I purchased a mountain bike and I ride on the road most of the time and I was looking at slicks for my bike. My tire size that I have now is 26x2.00 and the rims. I have on are AT-550 26inch what size ...
12
votes
7answers
1k views

How do I fix a puncture?

I got a flat/puncture on my bike tube, how can I fix it myself without going to the nearest bike shop? What kind of equipment would I need?
21
votes
11answers
5k views

Do glueless tube patches work as well as glue ones?

Quite a few years ago I tried some glueless patches for repairing my punctured tubes while out on the road, and found that they rarely stayed on for very long. I know that technology has advanced a ...
4
votes
3answers
511 views

Is it normal to wear out the rear tire with in a few months when using a trainer?

Early this year I attached my bicycle to a trainer, around the December time frame of 2011. The rear tire and inner tuber where shot by March of 2012. Riding about 24 Miles per week. Is this normal ...
17
votes
7answers
6k views

Does the plastic cap on a Presta valve serve any purpose once fitted to a rim?

I can see the use of the valve cap on a Presta valve when the tube is still packaged (it obviously stops the valve puncturing the tube), but does it do anything except look pretty (or not) once you've ...
16
votes
4answers
3k views

Is there a difference in having tires filled with CO² vs Air?

When you fill your tire with a CO² cartridge you are obviously putting CO² into it. When you use a pump you are putting air into it. Are there significant temperature variations that may lead to poor ...
8
votes
10answers
2k views

Any alternative use for old mountain bike tyres and inner tube?

I have recently changed the original tyres and inner tube of my 15 year old Specialized Rockhopper. They were starting to deteriorate and I got punctures almost every time I took it on gravel paths. ...
7
votes
2answers
795 views

Relationship between punctures and tube pressure

What could be the relation between a bicycle's inner tube getting punctured and the pressure of the tube. Are they directly proportional? I.e, if the pressure of Bicycle tube is higher then it has ...
6
votes
3answers
672 views

Frequent blow outs in the same location

I keep getting blow outs in my front tube and always in the same location: right next to the valve stem. The blow outs look like: On this same tube, there is wear on exactly the other side of the ...
4
votes
4answers
1k views

How should I store inner tubes to maximize their shelf life?

The LBS's in my area tend to have major sales around the same time once or twice a year. During this time, I can get replacement tubes at about half their normal price. I can buy several tubes, enough ...
3
votes
3answers
2k views

Best practice for patching snakebite pinch flats on skinny tubes

So, I tend to run 700x23c or 700x25c tires on my commuter bike. Sometimes I'm lazy and forget to check the air pressure and inevitably get a pinch flat when I hit some stationary object, pothole, or ...
2
votes
4answers
4k views

Which MTB Inner Tubes

I have tried a few brands of inner tubes for off road riding, mainly slime and dr. sludge but recently I have suffered more punctures than I'd care for despite the 'green goo'. My question is what ...