road bike psi
For example, if a 165-pound rider uses 100 psi on his road bike, a 200-pound rider should run closer to 120 psi, and a 130-pound rider could get away with 80 psi.
Here’s our guide to road bike tyre pressure. Pull the lever of your track pump, and push down fully, before repeating – the pressure gauge should show the PSI increasing. If not, try taking
Proper road tire pressure is critical. Set it too high and cornering traction will suffer. The Right Tire Pressure for a Road Bike By: Performance Bicycle Published: 3/19/13 dry roads, push the upper limit of the psi range for lower rolling resistance and increased speed. If you have any questions about correct road tire pressure, call
What pressure should I run my Road Bike tyres at? Ask Question 37. 9. As an example, I use Gatorskins on my road bike (23c) and my commuter bikes (28c). I run the rear tire 10 psi below the max and the front tire 15-20 psi below the max. When I made that transition (from running at max) I noticed a lot more comfort and no loss of speed or
All other things being equal, run them as high as the tyre manufacturer recommends (there will be an advisory notice on the tyre wall). For most tyres of even medium quality, this should be at least 100psi, if not 110; higher end tyres might go up to 130+. (I generally inflate both tyres to similar pressures, but I think that there are some theories that if either were to be higher, that should be the rear, because it carries the majority of the weight.) Indeed, the higher the pressure and the harder the tyre, the fewer punctures you should expect as the surface should be better at repelling objects. You should keep tyres topped up, natural leakage occurs and at the higher pressures you might expect 10-20 psi drift within a week. When re-inflating, you should also take the opportunity to inspect the tyres. Any deformity or wear will be sure to be far more obvious and damaging when the tyre is inflated to the limits of its recommended pressure. The only caveat is in poor weather, where a reduction in pressure increases the contact area and introduces give, which should make for enhanced traction.Best answer · 32Michelin says this for road bikes:42I do not agree that running at the max pressure is a good idea. Most manufacturers express the recommended pressure as a range and there is a reason for that (as has been pointed out in various answers above). There is a “sweet spot” that tends to be affected by a variety of factors such as your weight, bike weight and road conditions. You’ll probably need to experiment to find what feels comfortable without feeling “squirmy” or squishy. There are some arguments that running full pressure actually wastes more energy than the increased rolling resistance from running at slightly lower pressures. At full pressure, the tires tend to “bounce” off road imperfections rather than absorb/conform to them. And of course the increased road shock will add fatigue. One trick I’ll add is to run your front tire about 5-10 psi lower than your rear. The rear tire has more weight over it and so it needs the higher pressure. The front tire has more bearing on perceived handling and comfort IMO, so running lower pressure there has more benefit. As an example, I use Gatorskins on my road bike (23c) and my commuter bikes (28c). I run the rear tire 10 psi below the max and the front tire 15-20 psi below the max. When I made that transition (from running at max) I noticed a lot more comfort and no loss of speed or efficiency; that includes fairly objective measurements with a power meter. I also have not had any increase in the rate I flat–which is incredibly low by the way, I highly recommend Gatorskins! I am 160 lbs FWIW. Most of the above observations are discussed in a Bicycle Quarterly article.14Without knowing what type of tire you are running, that question is hard to answer. For instanct, a 700×23 will be higher (like 120psi) than a 700×28 which will be lower (like 90psi). Generally tires give a range, the lower number will have more cushion but run slower and pinch-flat easier. Higher end will roll better and resist pinch-flats, but can cause a harsh ride.5This is handy http://www.dorkypantsr.us/bike-tire-pressure-calculator.html4I tend to inflate 10% shy of max because I’m light (150lbs) and I like my ride to not be jarring yet roll fast. For me its a compromise.There is a sweet spot you find after riding a particular tire for a while. Also if its wet or rough or sandy you may wish to run lower pressure resulting in a larger contact patch=more grip but also more rolling resistance. Ultimately, with experience you will feel whats best for you. It just takes a little time.We all start out not knowing!4I always run mine around the recommended 120psi (recommended on the tire wall). You can let a little air out for some “old skool” suspension or add a touch for a firmer ride. Not sure of your weight, but this may be a cause for your punctures, which is why you get a better response around 90psi.3All things are not equal. In particular, the load on the rear tire of a road bike is about 60% and on the front it is about 40%. Nor do all riders+bikes weigh the same amount. A 250 lb ultra-Clydesdale might not even want to ride on 21mm tire, let alone ride on it and inflate it up to the sidewall maximum. If you do overinflate, you will get a rock hard ride with uneven tread wear and be more susceptible to flats. An overinflated tire will also have less cornering ability and greater rolling resistance (at least according to Sheldon Brown and he’s smart). http://sheldonbrown.com/tires.html If on the other hand you underinflate, you will get a mushy ride, again with more rolling resistance and with snake bite flats. Cornering will also suffer. Even going straight, your bike can shimmy uncontrollably if it hits something. Getting the pressure RIGHT is worth the effort. Fast, more control and longer life, both yours and your tires’. This chart is a good starting point: Take this and add about 10% for the rear and subtract about 10% for the front. You have less load in the front and you DON’T want a rock hard ride working up through your bars. Don’t go over the sidewall maximum. If the number you get is considerably over the sidewall maximum then take that as a hint that you need a tire which can sustain a greater load. A wider tire is going to have a lower rolling resistance and will last longer. It’s going to weigh a leetle more (matters for acceleration and not climbing) and it’s going to have a leetle more drag (not significantly until much faster). You can stagger tires and ride a beefier tire on the rear for that 60% load. Its increased drag will be insignificant in the frame turbulence. It’s also easier to fit that tire within the chainstays than in the fork, say 23 front, 25 rear or 25 front or 28 rear. What’s important is that the PSI you calculate for front+rear is within their sidewall maximums. Your floor pump is not to be trusted. Its gauge will have you progressively overinflating with time. That’s another reason to go with Schrader tubes since you can use a better gauge with your car as well. In summary, before you even contemplate inflation pressure for your tires, make sure you have the right tires. Just so you know, pro tour riders are riding wider tires these days than they did even 10 years ago. Thin and rock hard to the sidewall maximum is NOT the right answer.3Be careful with overinflation, as while rolling resistance drops with increasing pressure, there comes a point when further increasing tyre pressure begins to dramatically increase rolling resistance. Often this is around the point of the tyre’s maximum rated pressure, although it can be less than that depending on a few factors. Here is an article that discusses some of the physics of tyres and demonstrates a methodology to assess where the sweet spot for lowest rolling resistance is:
http://www.slowtwitch.com/Tech/What_s_in_a_tube__1034.html Tyres that are overinflated become more skittish when cornering, and are more likely to slip in wet road surface cornering. Also many modern carbon rims have maximum pressure ratings that can be less than the tyres themselves, so be careful with that. In general, it’s better to be a little under inflated than over inflated.3On tires with tubes (which is what most of us have) you should always ride with the maximum recommended pressure but be sure to check both the tires and tubes max PSI. This is mainly to avoid pinch flats but also to decrease rolling resistance. It also will kick debris out from under the tire quicker to help avoid punctures. If you are on tubulars its less of a factor. If you are on nice roads on tubular tires i would always want to max them out as the are usually able to inflate to higher pressue thus reducing rolling resistance. On the other side with tubulars it is still safe to run them lower for nastier surfaces. For more information on tubulars and low pressure google Paris Roubaix + tires and you’ll see why.2
Ideal Pressure. Road tires generally require 80 psi to 130 psi, mountain tires 30 psi to 50 psi and hybrid tires 50 psi to 70 psi. To find your ideal pressure, start in …
You may have had prior knowledge of some of them, but you will surely discover some new ideas about how to regularly maintain your road bike tire pressure: How much pressure do I need in my tires from the start/beginning? Normally, you would need 12 psi in front tire and 12 psi in the rear one.
CyclingTips Australian tech editor Matt Wikstrom details the process for determining the best tire pressure for your road bike. What is the optimal tyre pressure? by Matt Wikstrom. May 17
Road bike tires are narrowest and require between 80 and 130 psi air pressure. Mountain tires are flatter and they need an air pressure between 30 and 50 psi . If your bike has hybrid tires , you’d have to maintain the air pressure between 50 to 70 psi.
26″ Mountain bike tyres usually 30 to 50 psi; 27.5″ Mountain bike tyres usually 20-25 psi; 29″ Mountain bike tyres usually 18-20 psi; Hybrid tyres around 50 to 70 psi. Tyre Pressure Guidelines. For a 700 x 23c tyre on the road, a 55 kg rider should start off with 100 psi while a 90 kg rider should run closer to 120 psi.