# Readers ask: How To Fill Bike Tires?

## How do you know how much air to put in bike tires?

Look on the sidewall of your bike tire and find the recommended PSI (pounds per square inch). This will vary based on the bike and the tire size. Sometimes this is given in a range such as 35-65 psi on a mountain bike. Or it might give a maximum such as 120 psi on a road bike.

## How do I pump up my bike tire?

How to Pump a Bike Tire

1. Acquire the necessary bike pump for your bike’s tire valve.
2. Determine the tire pressure needed for your bike.
3. Unscrew the cap from the valve.
4. Place the pump on the valve.
5. Pull up the pump lever.
6. Inflate the tire.
7. Remove the pump from the valve.
8. If you overinflated, remove some of the air to reach the correct psi.

## How do you know when your bike tire is full?

It’s usually a range, say from 35 to 80 psi (that stands for “pounds per square inch”). The only way to know how much pressure you have is by using a pressure gauge — squeezing your tire isn’t accurate enough. Most floor pumps have built-in gauges, but you can also find small tire gauges at bike stores.

You might be interested:  How To Tell If You Have Nitrogen In Your Tires?

## Is 40 psi too high for tires?

Higher pressure generally is not dangerous, as long as you stay well below the “maximum inflation pressure.” That number is listed on each sidewall, and is much higher than your “recommended tire pressure” of 33 psi, Gary. So, in your case, I’d recommend that you put 35 or 36 psi in the tires and just leave it there.

## What happens if you put too much air in your bike tires?

The higher pressure makes the bike feel fast but may actually be slowing you down! If the tire is too hard it will have a tendency to vibrate and bounce which increases rolling resistance and makes for an uncomfortable ride.

## How do I know if I have Schrader or Presta?

A Presta-only pump has a rubber gasket in the head, or chuck, that will fit snugly around a Presta valve but not a Schrader. A Schrader-only pump has a pin in the center of the chuck to depress the Schrader stem’s check valve. If you try to put it on a Presta tube, it simply won’t fit.

## Which is better Presta or Schrader valve?

Presta valves are easier to pump than Schrader, because they have no valve spring to overcome. In narrow rims, clincher tires also leave insufficient space between tire beads for larger Schrader valves. In contrast Schrader valves are more robust, universally used, and have an easily removable core.

## Can I pump bike tires at gas station?

Your tires need to have Schraeder valves (similar to car tires) or you’ll need an adapter for a Presta valve. Fill the tire in very short bursts, checking the pressure in between. You can get adapters for presta valves that screw on and allow you to use the service station pumps.

You might be interested:  Question: How Many Miles Before Changing Tires?

## Why can’t I pump my bike tire?

There’s a little pin that has to be pressed down in order for air to get into the tire, and if it isn’t pressed down enough, it won’t allow any air in no matter how much you pump. If that doesn’t help, your tire valve could be stuck closed, or the pump fitting (the thing you press over the tire valve) might be broken.

## Where can I pump my bike tires for free?

Where to Get Free for Your Tires

• Regional Gas Station or Grocery Store. Some regional gas station brands still offer free air.
• Get a Portable Air Compressor.
• Check Your Car Trunk.
• Visit Your Oil Change Location.
• Go to a Tire Shop.
• Use a Bike Pump.
• Live in California or Connecticut.

## How often should I inflate my bike tires?

High pressure road bike tires should be pumped up at least once a week, hybrid tires every two weeks, and mountain bike tires at least every two to three weeks. Why do I have to pump my tires so often? Bike tires hold only a small amount of air, but under a great deal of pressure.

## What the lowest tire pressure you can drive on?

If you have standard passenger tires (ninety percent of vehicles do) the lowest tire pressure you can generally drive with is 20 pounds per square inch (PSI). Anything under 20 PSI is considered a flat tire, and puts you at risk for a potentially devastating blowout.

## Should I be able to squeeze bike tires?

Basically, you pump up your tires until they feel “firm” but not “hard” when you squeeze it firmly between your thumb and fingers. There should be a bit of give, but you should not be able to dent it in deeply.