The days of pumping up your road bike tyres to the maximum pressure permitted and hoping for the best are gone. Not only are excessively high pressures uncomfortable, they’ve also been proven to be slower.
Optimising the tyre pressure on your road bike is, therefore, one of the simplest – and cheapest – ways to improve the performance and comfort of your bike.
Whether you're just starting out or you're an experienced rider looking to optimise performance, we're here to help.
Finding the right tyre pressure for your road bike is about balance.
Your tyre pressure needs to be high enough to minimise energy losses from the deformation of the tyre casing and to offer predictable handling through corners. But you also need it low enough to absorb, rather than bounce over, imperfections in the road.
In this article, we’ll run through why tyre pressure is so important, what factors influence finding your optimum pressure, and how you can find a pressure that works best for you.
Recommended tyre pressures for road bikes
There are a broad range of factors that affect the optimal road bike tyre pressure, so many brands are moving to online calculators that take these into account when making recommendations.
The two most important variables, though, are tyre size and rider plus bike weight.
As a general rule, wider tyres will require lower pressures than narrower ones, while heavier riders – or those carrying loads – will require higher tyre pressures, and vice versa.
This is because your total system weight (bike, plus rider and everything you're carrying) affects how much your tyres are compressed against the road while riding.
Whether the roads are rough or smooth, or wet or dry, also makes a difference. Rough and/or wet roads require lower tyre pressures to ensure optimal comfort and grip, and vice versa.
It’s also critical to adhere to the pressure limitations set by the manufacturers of both your rims and tyres for safe riding. These are typically printed on the tyre or rim sidewalls, and you should use whichever limit is lower as your safe maximum pressure.
If you have a set of wheels with hookless rims, for example, the maximum permitted tyre pressure is likely to be limited to 5 bar / 72.5 psi – much lower than is typical with hooked rims. You'll also need to ensure you're using hookless-compatible tubeless tyres.
We've used Vittoria's tyre pressure calculator to offer some suggested tyre pressures for general road riding.
Vittoria recommends running a slightly lower tyre pressure up front to improve your grip and cornering ability.
These recommendations are from Vittoria for its nylon 'competition' road clincher tyres – such as the Corsa N.EXT – on rough roads in mixed conditions, and for 'rider plus bike' total system weights.
They're intended to offer a starting point for individual experimentation, but are a good starting point regardless of the brand and model of tyres you’re using.
Check out our in-depth guide to the factors that influence optimal tyre pressure below, if you want to fine tune things further.
Tyre pressure for 25mm and 28mm tyres
| 700x25c (25-622) tyres | Recommended pressure | 700x28c (28-622) tyres | Recommended pressure | ||||
|---|---|---|---|---|---|---|---|
| Rider plus bike weight | Front / rear, bar | Front / rear, psi | Rider plus bike weight | Front / rear, bar | Front / rear, psi | ||
| 50kg / 110lb | 3.44 / 3.58 | 49.9 / 52 | 50kg / 110lb | 3.15 / 3.28 | 45.7 / 47.6 | ||
| 60kg /132lb | 3.97 / 4.13 | 57.6 / 60 | 60kg /132lb | 3.63 / 3.78 | 52.7 / 54.9 | ||
| 70kg / 154lb | 4.3 / 4.48 | 62.4 / 64.9 | 70kg / 154lb | 3.93 / 4.1 | 57.1 / 59.4 | ||
| 80kg / 176lb | 4.63 / 4.82 | 67.1 / 69.9 | 80kg / 176lb | 4.32 / 4.50 | 62.7 / 65.3 | ||
| 90kg / 198lb | 5.29 / 5.51 | 76.7 / 79.9 | 90kg / 198lb | 4.94 / 5.15 | 71.7 / 74.7 | ||
| 100kg / 220lb | 5.62 / 5.86 | 81.5 / 84.9 | 100kg / 220lb | 5.47 / 5.25 | 76.2 / 79.3 | ||
| 110kg / 242lb | 5.62 / 5.86 | 81.5 / 84.9 | 110kg / 242lb | 5.47 / 5.25 | 76.2 / 79.3 | ||
Tyre pressure for 30mm and 32mm tyres
| 700x30c (30-622) tyres | Recommended pressure | 700x32c (32-622) tyres | Recommended pressure | ||||
|---|---|---|---|---|---|---|---|
| Rider plus bike weight | Front / rear, bar | Front / rear, psi | Rider plus bike weight | Front / rear, bar | Front / rear, psi | ||
| 50kg / 110lb | 3.02 / 3.15 | 43.9 / 45.7 | 50kg / 110lb | 2.83 / 2.95 | 41.1 / 42.8 | ||
| 60kg / 132lb | 3.49 / 3.63 | 50.6 / 52.7 | 60kg / 132lb | 3.27 / 3.41 | 47.4 / 49.4 | ||
| 70kg / 154lb | 3.78 / 3.94 | 54.8 / 57.1 | 70kg / 154lb | 3.54 / 3.69 | 51.4 / 53.5 | ||
| 80kg / 176lb | 4.07 / 4.24 | 59 / 61.5 | 80kg / 176lb | 3.82 / 3.97 | 55.3 / 57.3 | ||
| 90kg / 198lb | 4.65 / 4.85 | 67.5 / 70.3 | 90kg / 198lb | 4.36 / 4.54 | 63.2 / 65.9 | ||
| 100kg / 220lb | 4.94 / 5.15 | 71.7 / 74.7 | 100kg / 220lb | 4.63 / 4.83 | 67.2 / 70 | ||
| 110kg / 242lb | 4.94 / 5.15 | 71.7 / 74.7 | 110kg / 242lb | 4.63 / 4.83 | 67.2 / 70 | ||
If the recommended tyre pressures are too high for your tyres or rims, then we'd recommend swapping to larger tyres which require lower pressures.
As noted previously, it's vital not to exceed the maximum pressures indicated on your tyres or rims.
How do Vittoria’s recommendations stack up against what tyre pressures I personally use? Pretty well, actually. Let’s have a look at an example.
I weigh around 65kg, and when riding my Giant TCR Advanced Pro Disc road bike with 700x28c / 28-622 tubeless tyres on 21mm-wide rims, I have a 'rider plus bike' system weight of 73 to 74kg.
Given the roads I ride on most often tend to have rough or broken surfaces, and are frequently wet, I typically use tyre pressures of around 4 bar / 58 psi up front and 4.2 bar / 61 psi at the rear.
Generally, I err on under-, rather than over-inflating my tyres, as I'd rather have a little too much grip and comfort for any given ride than not quite enough.
Do you ride a mountain or gravel bike?
Getting your tyre pressure right on a road bike is very different to a mountain or gravel bike, where tyres (and wheel rims) are significantly wider, the terrain is looser and you have to contend with trail obstacles.
If you ride off-road, we've got a separate guide to mountain bike tyre pressure and gravel bike tyre pressure.
Key points to consider
Before we get stuck into fine tuning your road bike tyre pressure, here are four key things to consider.
Why bother?
On a basic level, getting your tyre pressure right is about achieving the right level of tyre deformation – that is, how much the tyre is able to deform over imperfections on the road.
From a performance standpoint, optimising tyre pressure is critical to reducing rolling resistance and improving comfort. Rolling resistance is the force resisting the motion of your tyres rolling on the ground.
If your tyre pressure is too low, more energy will be lost in the deformation of the tyre casing and friction between the tyre and the road. It also increases the chance of pinch flat punctures.
If your tyre pressure is too high, the tyre will be so stiff your bike will begin to vibrate over imperfections in the road surface, negatively affecting comfort and wasting energy.
What feels fast, might not be fast
Very high tyre pressures might feel fast, but they’re generally not.
Once you go past a certain point, adding more air to your tyres decreases grip, increases high-frequency vibrations and causes extra muscular fatigue. All of these things slow you down.
Tyre pressures that allow your bike to absorb, rather than bounce over, imperfections in the road are both faster and more comfortable.
Tools for the job
In order to set the right tyre pressure on your road bike, you’ll ideally have access to a track or floor pump with an in-built pressure gauge.
You don’t need to spend loads, but given how much you’ll use it in the long term, getting something high-quality makes sense.
If you have a set of wheels with hookless rims, then a dedicated tyre pressure gauge is a worthwhile investment, too.
According to Silca CEO, Josh Poertner, "Your average floor pump has a [pressure] gauge that’s +/- 5 per cent accurate", so having another gauge at hand to double check you're not going over the rim or tyre limits is therefore a good idea.
Proceed with caution
When it comes to road bike tyre pressure, err on the side of ‘too low’ rather than ‘too high’.
According to testing by Silca, performance decreases rapidly once you go past the optimum pressure for a given setup.
Being a little too low only brings a relatively small speed penalty, but should be noticeably more comfortable and grippier on rough roads.
Factors that influence optimal tyre pressure
As we covered in the recommended pressure chart, the suggest figures are intended as general starting points.
They’ll get you in the right ballpark, but there are a number of factors beyond tyre size and rider weight that affect your personal optimum road bike tyre pressure.
Size matters
Accurately determining your tyre size is crucial to calculating optimum pressure.
Despite most bicycle tyres being labelled with a specific size, such as 700 x 25c, the actual inflated size of any given tyre will depend on both the design of the tyre and the internal rim width of the wheel.
Most new 25 and 28c tyres are now designed around ETRTO (European Tyre and Rim Technical Organisation) standards with a 19mm internal width rim in mind. 30 and 32c tyres are designed to measure as described on 21mm-wide rims.
Progressively designed road bike wheels with an internal rim width wider than this will therefore likely increase the measured width of a tyre when inflated to a given pressure. In contrast, narrower rims will mean narrower tyres.
Wider rims will therefore require slightly lower pressures for a given tyre size, and vice versa.
System weight and weight distribution
While the rider makes up the vast majority of the total system weight – and, as we’ve already covered, a heavier rider will generally need to run higher pressures than a lighter rider – the weight of your bike and any kit you’re carrying also count.
If you’re riding a sub-4kg weight weenie optimised road bike and don’t have it loaded up with heavy gear, then you might need to lower your tyre pressure by a few psi.
The opposite is also true. If you’re riding a heavy touring bike or a road bike loaded with bikepacking bags, you may need to add more air to your tyres.
With road bikes, the rider’s weight is generally not evenly distributed across both wheels. The exact split will be different for every rider, depending on riding position and bike, but it’s usually the case that the rear wheel takes slightly more of the load than the front.
Given this, Vittoria recommends putting around 0.2 bar / 3 psi less in the front tyre than the rear.
Road conditions
If you’re riding on a perfectly smooth velodrome, higher tyre pressures can be faster. However, on imperfect surfaces, such as roads, very high pressures tend to simply increase vibrations and therefore slow you down.
As roads get rougher, with bigger holes and bumps, the optimum tyre pressure decreases further.
When roads get really rough, smaller tyres (anything 25mm or smaller) running at a relatively low pressure may not be able to prevent the tyre from bottoming out – especially for heavier riders – which can lead to pinch flats or even rim damage.
Switching to larger tyres will give you a greater amount of tyre volume to play with, so you can fine-tune the pressure to account for both rolling resistance and comfort on rough roads.
This is why the pros switch to 30mm+ tyres for cobbled races such as the Tour of Flanders and Paris-Roubaix.
Weather and temperature
When road surfaces are wet, or if it looks like it might rain during your ride, it’s worth dropping tyre pressures by around 0.15 bar / 2 psi on both tyres. This helps increase the amount of rubber in contact with the road, which should improve grip.
Higher temperatures, whether ambient or induced by rim braking, can also increase tyre pressure.
This can be a particular issue for riders with hookless rims, especially if you want to use tyre pressures close to the 5 bar / 72.5 psi limit mentioned earlier.
Likewise, if you’re riding long descents on hot summer days on a bike with rim brakes (particularly one with carbon clincher wheels, or latex ot TPU inner tubes), be careful to not over-inflate your bike’s tyres.
Doing so could lead to dangerously high pressures building up inside the inner tubes or tubeless tyres, if too much excess heat is introduced to the system due to friction from prolonged braking.
Tyre construction
The materials and construction methods a road bike tyre manufacturer uses can also affect the optimum pressure, to a small degree.
Road bike tyres designed for racing or summer use tend to have casings that use a higher number of thinner nylon or cotton threads (this is what the 'Threads Per Inch' or 'TPI' number of a tyre refers to), and only a thin layer of rubber tread on top. This makes them easier to deform under pressure, making for a smoother and faster ride.
Conversely, winter road bike tyres typically have tougher, more durable casings with fewer, thicker nylon threads. The rubber tread on top also tends to be thicker for improved mileage and puncture protection.
Given this, Vittoria's pressure recommendations vary slightly depending on the construction of the tyres.
Supple 'pro competition' tyres, such as the Corsa Pro TLR require around 0.15 bar / 2 psi more pressure than a 'training reinforced' tyre such as the Vittoria RideArmor TLR, for a similar ride feel in the same nominal size.
| Tyre type | Recommended pressure | ||
|---|---|---|---|
| Front / rear, bar | Front / rear, psi | ||
| Pro Competition | 4.28 / 4.46 | 62.1 / 64.7 | |
| Competition | 4.24 / 4.41 | 61.5 / 64 | |
| Training | 4.19 / 4.37 | 60.8 / 63.4 | |
| Training reinforced | 4.15 / 4.32 | 60.2 / 62.7 | |
Tubeless
If you’re using tubeless tyres, it’s worth remembering that the absence of an inner tube means you can run lower pressures without increasing the risk of pinch flatting the tube.
Because lower tyre pressures can improve off-road grip, running tubeless tyres can be particularly useful if you’re riding a road bike with relatively large tyres and looking to take in some light off-road or gravel riding.
Why do tyres lose pressure?
Even if you don't have a puncture, tyres will lose pressure over time, primarily because of permeation.
This is when air passes through the structure of the tyre (and inner tube, if present), and it's simply a result of the materials used.
It's also worth noting that thinner, racier tyres and inner tubes (especially latex ones) will tend to lose air more quickly, and therefore need to be topped up more frequently.
It's therefore important to check your tyre pressures before you ride. Once you've worked out what pressures you should run, it's simply a case of topping the tyre up to the desired figure.
If you'll not be riding your bike for a while (i.e. over the winter), we'd recommend hanging the bike off the ground. This prevents the inner tube from perishing when it's in contact with the ground when the tyre fully deflates.
Alternatively, remember to keep the tyres suitably inflated from time to time.
Fine-tuning road bike tyre pressure
So, you have all the information at your fingertips, but how do you actually go about fine-tuning tyre pressure? The simple answer is experimentation.
Start with the recommendations above and then consider what the road conditions are like where you ride. Do you have miles and miles of freshly laid tarmac? If so, slightly higher tyre pressures might be faster.
If not – perhaps because you live somewhere such as the UK – start with the above recommendations, and if things don't feel smooth, experiment with taking a little pressure out of the tyres each time you go for a ride.
Start with small steps in pressure of around 0.3 bar / 5psi, and, if you pay attention, you should eventually be able to determine a sweet spot for speed and comfort.
You’re looking for a pressure that feels smooth, without feeling like the tyre is collapsing underneath you when cornering. And, as already mentioned, erring on the side of too low rather than too high is a good thing to keep in mind.
Field testing
Alternatively, if you have an accurate and reliable power meter, you could do some basic field testing yourself.
Find a long, steady climb with an average gradient of over 5 per cent, and see how different tyre pressures affect the power required to ride at a certain speed, or how fast you travel for a set power output.
The data you acquire should enable you to hone in on an optimum tyre pressure for the setup and road conditions you’re using when testing.
You’re looking for the tyre pressure that requires the least power for a set speed, or enables you to travel fastest for a set power.
As with any testing, it’s important to keep all other variables (e.g. system weight, riding position, traffic, weather, etc) the same for each test run, otherwise, you can muddy the results.
Finding the best road bike tyres
We've established that different tyres will perform distinctly and over time, you'll learn what tyres work well for the type of riding you like to do. Check out our buyer's guides to the best road bike tyres and best tubeless tyres if you're looking to upgrade your bike.
