Bike Tire PSI: How Much Air Should You Put in Your Bike Tire? || REI

Bike Tire PSI: How Much Air Should You Put in Your Bike Tire? || REI


hi my name is Katie and the question today is how much shall i inflate my bike tire it seems like a simple question the recommended pressure is usually printed right here on the side of the tire but even within the recommendation there’s a pretty decent amount of range so how do you choose the short answer is that more air higher pressure gives you less rolling resistance and therefore makes it easier to carry your speed whereas lower pressures prioritize grip and give you a little bit more of a comfortable ride the long answer is that there are a few more things to consider for this tire our range is 40 to 65 psi so for example if we were riding over some smooth terrain maybe a well paved road or a non-technical trail we might choose something on the higher end of that range to really reduce that rolling resistance and prioritize being able to carry speed through the trail if it were rainy and we’re riding over roots and rocks outside we might pick something on the lower end of the range it’s at the expense of rolling resistance but you get more grip and the tire itself actually absorbs bumps as you can go over them for road cyclists the optimal balance between comfort and grip and rolling resistance tends to be right in the middle of that recommended range but you can always add and subtract as the conditions change and depending on how you like your bike to ride for most mountain bikers they tend to choose PSIs on the lower end of the range because at the expense of rolling resistance you move a little slower but you’ve got more grip and more bump absorption as you roll by on your tire regardless of what your riding just make sure not to over under inflate your tire at least until you get a better sense of how this particular tire performs at different pressures as long as you stay within the recommended range you should be good to go that’s all we have for tire pressure today but if you’re curious about things like what tube should I put in my tire go ahead and check out some of our other videos until next time we’ll see you then thanks for watching

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  1. Nice video. A road/gravel bike companion video would be nice, although a lot of the principles are the same. A couple thoughts to add: 1. Rider weight (and load weight if you have packs on) is a HUGE factor in ideal tire pressure. 2. Rolling resistance benefits of high pressure are usually less than the benefits of having some cushion in the ride – lower rolling resistance is meaningless if you lose forward energy bouncing vertically off every little pebble in the road. Lower pressures are often faster than high pressures for this reason. 3. Some rims have a maximum recommended pressure, which may or may not be over your tire's recommended maximum pressure. 4. The tire manufacturer's recommended pressure range is usually well within the safety range; you can probably inflate a little over or under without much issue if it gives you the results you're looking for, but do so with caution of course – either above or below will increase risk of flats and/or blowouts. 5. Best practice for people completely unsure of what pressure they should use is to start dead center of the tire's recommended range and do a ride, then push up by 5 lb psi increments until riding the same route feels better or feels worse, then, starting back at the middle, lower pressure 5 lb psi at a time until it feels better or worse. Do this until you've covered the full recommended range. Using this procedure, you'll get a feel for where your favorite comfort range is (there may be more than one). Then you can start dialing in a sweet spot where it feels best for your normal riding. Then you can start playing with adjustments when you find yourself on different terrain or are adding pack weight. To do these adjustments, you'll obviously need a pump with a pressure gauge.

  2. One more thought for those using inner tubes: Some tubes come in overlapping diameter options. For example, on my road bike, I like a 25mm tire width. My favorite tubes come in 20-25mm or 25-32mm options. I could choose either, but choosing the larger (25-32mm) is always better because the butyl won't be stretched as thin as the smaller tubes when they are inflated inside the tire. This means they will last a lot longer and be much more puncture resistant.

  3. Why on earth wouldn't you include a Road Bike portion? Also a about tire pumps….is the lever supposed to be up or down to like it place

  4. I’ve got a set of fairly smooth tires on my old MTB but there is no range. It says max 40PSI, which I feel is low. What would happen if I inflate them higher than that?

  5. Some tires say 50 to 60 PSI but in a bike tire and then some say maximum 35 or 40 so what kind of tube should I use just a regular tube and inflate that tube to the tire specifications because Tubi don’t usually tell you how much air to put in that tube but the tire tell you

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