Questions tagged [inflation]

Questions referring to the proper inflation of bicycle tires, including the recommended pressures and tools involved

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Unable to inflate tire

In the picture, the valve stem seems loose and I am able to pull it. The air pump hose does not stay attached to the valve stem when I try to inflate it. In fact, pumping air seems very easy so air is ...
user2716454's user avatar
7 votes
4 answers
4k views

Back tire flat only when I sit on it

My back tire goes flat only when I sit on it or ride on it. When I am not on it, the tire is fully blown up and feels the way it should. It is squeaking too.
Karen Montaña's user avatar
4 votes
2 answers
2k views

How Can I Get A Troublesome Tubeless Tire to Inflate and Seat on the Bead?

I have been using tubeless for about five years now (mostly road, but also gravel and MTB) and between working on my bikes and my friends' bikes as well. I can usually get tubeless tires seated and ...
Ted Hohl's user avatar
  • 6,142
5 votes
1 answer
2k views

Tubeless holding high psi, leaking at rim/bead during low pressure

I am going tubeless! Using tubless ready rims and tires with a floor pump. The front one went on no problem. The rear one has seated, heard pinging, and holds air dry, up to 40 psi. When I add sealant ...
Jonathan Trzepkowski's user avatar
2 votes
2 answers
126 views

Why the tire gets flat immediately? [duplicate]

Yesterday I went to the GYM with my bicycle. It was OK. After workout I found that the tire is completely flat! Today I used an air pump to blowing it again and see what happens. It was OK and I fully ...
WDR's user avatar
  • 121
0 votes
1 answer
149 views

Rear 700C tire on hybrid bike flat/deflating seemingly at random

I have a hybrid bike and I am having a very strange problem with deflating tires. My bike has 700C 35/43 tubes I have changed 3 tubes in the last 2 weeks because something very strange is happening. ...
Gennady Uraltsev's user avatar
3 votes
1 answer
1k views

How often should air spring forks be reinflated (topped up)?

Forks that use an air spring, as opposed to a coil spring, have to be pumped up to the desired pressure to work as intended (using a shock pump). From experience, I know that they lose pressure over ...
Mick's user avatar
  • 746
6 votes
2 answers
11k views

How much pressure to inflate a tubeless tire so it seats into the rim

I want to set up my tires tubeless. I got a Schwalbe Tire Booster and have a proper air pump as well. The booster is capable of holding up to 11 bar of pressure. I am not sure how much pressure I have ...
ruedi's user avatar
  • 779
2 votes
1 answer
144 views

Not able to inflate my bike tyre

I have a Norco Mountaineer SL. It has a schrader valve and I am trying to inflate the tyres using https://www.amazon.ca/Crank-Brothers-16304-Sapphire-Silver/dp/B07K4PLWKW/ I seem to have set it up ...
systemdebt's user avatar
1 vote
0 answers
236 views

Tube with crooked presta valve won't inflate

I tried to inflate my tire with the presta valve and it won't inflate. As you see in the image, the valve is a bit crooked. After couple of times pumping, it becomes more difficult to continue but ...
Mezud Roohi's user avatar
7 votes
3 answers
4k views

How did these pimple/bubble/bump shapes form on my tube?

I've been riding on the same rear inner-tube for several months without issue. I topped up the rear tube last week, went on ~10mi ride (including a rest in the middle), and had no problems. I was ...
Will Haley's user avatar
2 votes
1 answer
4k views

New innertube won't inflate when in the tyre

I'm replacing my inner tube after getting a flat. When I inflate the tyre with the new tube in, it feels soft- even though the pump says the pressure is 100PSI. The tube inflates and holds its shape ...
smm's user avatar
  • 21
7 votes
7 answers
7k views

Is a powered car tire inflator suitable for road bike tire inflation?

I'm switching to road cycling. My diminutive and portable pump will likely be a pain to get 120psi. Rather than get a foot pump with either a built-in or an external pressure gauge, I'm thinking of ...
Sam7919's user avatar
  • 9,122
1 vote
2 answers
331 views

I can't inflate tire. Should I look for another pump?

Hello to everyone in the community. I used to own a mountain bike which used 26" tires and I was able to inflate them after changing the tube while on the road. It wasn't perfect but allowed me to ...
carlos palma's user avatar
10 votes
3 answers
4k views

What air attachment screws onto a Presta valve with the core removed? High volume for seating bead?

I have presta valves on two of my bikes. I have a presta floor pump. I have an air compressor. I have a schrader adapter. I have a blowgun and a tire inflator for my compressor. I can attach the ...
Aubrey Robertson's user avatar
2 votes
1 answer
3k views

Inflating toddler tires

I got my toddlers bike second hand & it looked like tyres were a bit flat. We brought new tubes & when I went to replace them I found that the current ones inflated. It seems that I can pump &...
Angela Cheung's user avatar
4 votes
5 answers
4k views

My rim exploded inflating on an automatic pump of a gas station. Should I reuse wheel's spokes/hub or buy everything new?

Today I went through this situation. Rims are Vzan Action with Formula Hub 36 holes. My rear tire was leaking. A guy patched up the tube and the problem persisted. I went to the bike shop and asked ...
 deLiz's user avatar
  • 91
11 votes
6 answers
58k views

New inner tube bulges near the valve when inflated

I've installed a new inner tube in my wheel. I checked the tube doesn't make a knot. When I inflate the tube, it bulges near the valve, and this rubs against the brakes. REF tube: 32/47 609/642 ...
Pierre's user avatar
  • 213
2 votes
1 answer
10k views

Which inner tube do I need to buy for 28 inch fixie bike?

I have a 2018 FIXIE Inc. Betty Leeds. https://www.fahrrad.de/fixie-inc-betty-leeds-white-694674.html These are the sizes of the tyres: Reifen vorne Marke: Kenda Typ: K-193 Größe: 28 Zoll ...
Vityata's user avatar
  • 121
2 votes
3 answers
4k views

Flat tire after inflating to max pressure

Bought a used mountain bike for mom. The bike wasn't used in quite a while . Mom used it for 3 weeks , tire pressure was ok but it needed some air. So I pumped air in both the tires to max ...
zennni's user avatar
  • 121
2 votes
2 answers
3k views

Rear tire tearing away from bead

I noticed recently that my rear tire seems to be tearing on the right side. The bead is firmly attached inside the wheel but the wall/fabric are tearing away. The bike and tire are only 3 years old. I’...
jtbandes's user avatar
  • 175
39 votes
3 answers
13k views

Why are emergency inflation cartridges filled with CO2?

Why aren't they filled with ambient air using air compressors? Isn't compressing ambient air cheaper than generating CO2? If it is, then those cartridges would have two benefits: Cheaper to ...
Tooniis's user avatar
  • 577
2 votes
1 answer
2k views

Sudden loss of air on tubless tyre, and now it won't inflate

Finding bike answers on the internet is really hard when you have no idea what you're looking for, so I'm sorry if I'm asking a ridiculous question here. Cycling back today I went over a bump in the ...
MattieTK's user avatar
  • 123
2 votes
2 answers
1k views

Presta valve inner tube issue: area around the valve does not fill up

I have this problem I keep running into and it's getting pretty expensive. I've bought many inner tubes and when I pump the tire up with air, the inner tube fills up really good except in the area ...
Atlas's user avatar
  • 21
0 votes
1 answer
258 views

Rear Flat Tire Repetition Mystery [duplicate]

I have this mysterious problem with my rear hardtail wheel. Here's how it goes: I put in a brand new tube after getting a flat, works fine for a ride, next ride get a flat, change tube, get a flat ...
Kemosabe's user avatar
  • 195
4 votes
3 answers
2k views

Have I damaged my tyres?

I noticed after mounting some new tyres that part of the side wall, just above the bead, seems to have been damaged while I was fitting them (see photos below). These tyres were especially difficult ...
Will Vousden's user avatar
  • 3,981
7 votes
2 answers
5k views

What to check after blowing tire off rim

Recently, after mis-reading "35-65 PSI" on a tire sidewall as "35-85 PSI" (in retrospect the unusually huge range should have tipped me off), I inflated a tire rated for 65PSI max to 80PSI. A few ...
SSilk's user avatar
  • 4,199
0 votes
1 answer
102 views

Michelin Proteks pop off rims [closed]

I have an OLD (Columbus tubing anyone?)...Corsaro 27" X 1 1/4 12 speed road bike I am reviving. The first thing are new tires and tubes. I got 2 Michelin Protek 27 X 1 1/4" tires and Bell tubes. I ...
Edwin W Walter's user avatar
0 votes
2 answers
3k views

What is the correct inflation pressure for hybrid road/city bike? [duplicate]

I have a road bike and I got a flat tire probably after going back on the road from the sidewalk very carefully. I guess I pinched my tire. I usually inflate my tires to 7 bars. Is it enough and can ...
nowox's user avatar
  • 107
5 votes
2 answers
10k views

Are CO2 cartridges feasable for use on fat bike tires?

Are CO2 or other portable cartridge style devices feasible for use on fat bikes with tires 26x4.5" or greater? I know there are large 20g or 40g cylinders available? If so, what sizes of cartridges ...
Benzo's user avatar
  • 18.2k
1 vote
1 answer
2k views

Uneven inflation of a new inner tube? [duplicate]

I bought a new inner tube and when I tried to inflate it, the tube got unevenly inflated (check picture). This is the first time I'm installing a tube by myself so I don't know if this is normal. Do ...
Andree's user avatar
  • 121
2 votes
2 answers
133 views

Why does rear tire lose 35 psi in a week with new innertube and tire?

My hybrid bike recently got a piece of glass through my rear tire and innertube. I bought both a new tire and innertube (700x35c schrader). I filled up both tires to 65psi. A week later the front ...
stephenbez's user avatar
3 votes
1 answer
3k views

How much can a 700x23 inner tube stretch?

I recycled my dad's road bike (about 20 years left in storage) so I bought a complete set of new wheels. "Good" hubs and rims, not quality brand though but I've been told they're good and that's what ...
rMaero's user avatar
  • 71
9 votes
7 answers
210k views

Difficulty inflating my bike tire

When trying to inflate my bike tire, I pump maybe 5 times then it gets difficult for me to pump because the handle is hard to pump?
user13102's user avatar
2 votes
3 answers
16k views

Tire Gauge to Avoid Over-Inflation

I just purchased a tire floor pump with a gauge for my bike. The gauge seems to start off at 0 PSI when I connect the pump to the tire. So, do I need to use a separate tire gauge to first measure the ...
THE DOCTOR's user avatar
1 vote
1 answer
1k views

Tire's won't inflate after winter

A few weeks ago I tried to take my Trek road bike for my first ride since last fall. It has been sitting in my (uninsulated) garage over throughout the winter and when I tried to inflate my tires the ...
Peter Kaminski's user avatar
14 votes
7 answers
27k views

How much does tire pressure affect the weight of the wheels

Kind of inspired by this question, but something I've been thinking about for a while. How much does the air in a bike tire weigh? Is it an appreciable amount? Is there a point where using a wider ...
Kibbee's user avatar
  • 21.7k
1 vote
3 answers
696 views

Do I have too much chafer strip showing after fixing a puncture?

I have had two innertubes explode on me on my bicycle, on the same wheel and tire. The first time I was inflating my inner tube after aquiring a puncture. On this occassion I was pumping my tires (...
MM.'s user avatar
  • 339
4 votes
4 answers
90k views

Will my bike hold my weight?

I'm pretty heavy (~150kg/330lbs) but being fond of cycling in the past, I decided to buy a bike, and maybe try to lose a few kilos with it. I didn't have too much time for looking around, so I bought ...
user10730's user avatar
20 votes
5 answers
20k views

Do road tubeless tyres lose air faster?

I just replaced my rear wheel with a road tubeless (Bontrager RL TLR). Was lucky to have the bike shop installed the tyre, took two blokes to put it on the rim. Anyway, my second ride was a couple of ...
imel96's user avatar
  • 1,363
4 votes
1 answer
6k views

How to correctly use an Avenir Airsource One bicycle pump

I have an Avenir Air-Source One pump that keeps popping off while trying to inflate the tires. can someone tell me how to correctly inflate the tires, without the pump popping off?
user7802's user avatar
7 votes
3 answers
26k views

Can I use a shock pump to inflate a tube?

I know that shock pumps are meant for high pressure applications so that they can withstand high pressures needed by suspension shocks. However, can I use a shock pump to inflate my tire in a pinch ...
Benzo's user avatar
  • 18.2k
13 votes
9 answers
256k views

How to inflate a tire with a Presta valve?

My new bike has these thin tires with a type of valve I haven't usedbefore. I searched online and found out it's called a Presta valve, and it's pretty common and popular. I'm finding it annoying and ...
wim's user avatar
  • 516
4 votes
6 answers
14k views

Correct inflation pressure for old road bike

I have an old Fuji road bike that I got a garage sale a while back. It's probably from the 70s or 80s. This summer, I've been trying to fix it up into good condition for some longer-than-usual rides (...
Danny's user avatar
  • 51
6 votes
4 answers
3k views

Gash where valve meets tire tube; How could this happen, and can I fix it?

I'm fairly new to bicycling; apologies if this is a standard question but I couldn't figure out how to phrase it to search for it elsewhere. I ride a KHS Urban-X with Kenda Kwest tires (just what it ...
SeanKilleen's user avatar
3 votes
3 answers
5k views

Air compressor to fill up to 60 PSI

I am looking for an air compressor and wish to get one which is not under or over powered. I am looking at one in a catalogue which has the following attributes: 40 Litres/min free air delivery 1hp ...
Valamas's user avatar
  • 845
1 vote
4 answers
770 views

New pump - Topeak |Pocket Shock

I bought this new pump, but i think I made a mistake. I need it for my road bikes, with presta valves. I don't understand how I connect the pump to the presta. Is it even possible? do I need an ...
Saariko's user avatar
  • 245
28 votes
4 answers
22k 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 ...
Joe Phillips's user avatar
  • 1,337
53 votes
14 answers
68k views

What are advantages and disadvantages of CO2 inflators over frame pumps?

I have a frame pump that I've used on the road when replacing flats, but I always see CO2 inflators advertised at bike shops. Are they worthwhile for the potential weight savings?
Drew Stephens's user avatar