will i get puntured easily when i put high psi for my mountain bike?

Question

my tires are kenda nevegal 26x2.1
recommended psi are 40-65at 40psi, its already quite hard
i'm afraid that if i pump more, i will get flat.
will i get flat easily if i pump to 50+psi for road use?
and 40psi for off road?
i pump air at petro station. is the psi they have there diff from bike's one?

if i use 55psi for road use and rocky off road, will i get flat more easily than at 40spi?

i'm thinking of the concept of ballon.
more air burst more easily. can someone tell me if it is right?

Answer 1

There is no problem with putting 65 or even more pounds in your tires for riding on the road. If you want to be bounced all over the trail, you can even run up to 65psi off road. It will, however, be miserable.

Depending on your weight and the type of trail you are riding, you usually want lower pressure to provide some shock absorption and additional traction. I don't run Nevegals, but I do use a comparable tire. I find about 35psi prevents pinch flats, gives a cushioned ride and adequate traction.

A tire is not really like a balloon. A balloon keeps getting larger in diameter as you fill it up. To get larger in diameter the rubber must efface - stretch and thin. Because the balloon keeps expanding as you put more air in it, the internal pressure only increases slightly as it expands. Tires are made of tough material that allows little stretching and thinning. Thus, they allow substantial internal pressure.

There is no telling how much pressure your gas station pump has. Personally, I would never recommend using a gas station pump. I would buy an inexpensive floor pump with a gauge. You'll get more accurate pressures and won't risk blowing a tire off the rim.

Hope this helps.

Answer 2

For road use, I always pump tires to the maximum pressure indicated on the side wall no matter how hard the tire feels. Doing this will significantly reduce the probability of pinch flats on the road. Personally, I check my tire pressures before every ride. I haven't observed inflation pressure to make a difference in a tire's resistance to puncture by a foreign object like glass or a nail.

A floor pump with a built-in pressure gauge (got one for US$20 on sale) stored where you keep the bike is faster than making an additional stop at a petro station to use their air pump. In the US, many air pumps now require you pay by dropping $0.25 into a slot. If you are going to continue to use a petro station's pump, I suggest that you get a small tire pressure gauge. It is a good thing to carry when you must fix a flat on either the road or the trail.

Answer 3

AS long as you stay within the proper range (including the maximum -- it IS part of the range) you should not experience a problem with the tire. You will experience problems if you ride an underinflated tire. In response to your edit, even a balloon has a rage of psi to properly inflate it -- maybe not published but the manufacturer knows it. They make it so 90% of the people will inflate it properly. 100% of the people who own bikes can inflate a tire properly by reading the side wall and staying in that range. My tires are always inflated to the max shown on the sidewall because some leakage happens with just checking with the gauge, air temp changes, etc.

Answer 4

The 2.1 nevs can go lower PSI. I don't know where you got the numbers. It depends on your weight, I'm 230lbs plus gear and run it at 40, but lighter riders could easily do 30-35 psi on those tires.

How much pressure you put on the tires will depend a lot on how the bike will feel. If you have a lower psi you will have better traction on loose, sand or muddy situations, while more psi is better for hardpack or paved roads.

Answer 5

It's not right actually. In fact, as long as you stay within the pressure guidelines on the sidewall of the tire, you are less likely to get flats with more air. The reason is simple. One of the most common causes of flats on a bike is called pinching. Basically, you hit a bump or obstacle hard enough that the tube gets pinched between the rim and tire. This causes a weakness in the tube and ultimately a flat. With more air pressure, these can largely be avoided.

Answer 6

no you won't. the amount of air you're currently putting on your tires are fine. you can even go lower than 40 psi on trails for more traction say 30-35 psi.

the psi on petro stations are the same but it'll be better if you can get yourself a bicycle pump with gauge, patch kit with tire levers and extra tubes handy especially on the trails cause you never know when you're gonna get a flat tire.

Answer 7

I see you're questioning my earlier advice ?????

It's ok to cross check but looking at your additional details, you are confused over the petrol station air pumps!!!

They are designed for car tyres not smaller bike tyres.

Think of it like this: - If you opened a tap full blast and filled a bucket of water it would takes half a minute or so - If you fill a cup it would overflow in seconds !!!! The pressure is the same, but a greater flow of volume in relation to the receptacle being filled. Your tyres won't overflow they will burst!

Also be aware the gauges aren't very accurate anyway!

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