Bicycle Tire Pressue Chart: Optimal Tire Pressure

Bicycle Tire Pressue Chart: Optimal Tire Pressure

Posted by: NEXTIE Post: 02/09/2024 View: 393 Comments: 0

Optimal bicycle tire pressure balances riding speed, comfort and safety. While the optimal tire pressure value is directly related to many factors, like the riding condition, the system weight (rider weight + bicycle weight + cargo weight), the rim size especially the inner width of the rim, the tire size, the rim bead type (hook or hookless) and the rim strength, weather and temperature. 

Hereby we have listed some recommended tire pressure values of our carbon rims for reference. You could also use the tire pressure calculator to get more accurate tire pressure recommendations sram.com/guides/tire/pressure. Or contact us for assistance.


Fat Bike / Tire Pressure

Internal WidthTire PressureTire SizeSystem WeightReference Model
49mm
16 ~ 24 psi
2.6" ~ 3.8"85 ~ 134 KgXiphias 55
58 ~ 59mm
8 ~ 20 psi
3.2" ~ 4.5"85 ~ 134 KgXiphias 65
64mm
7 ~ 19 psi
3.2" ~ 4.6"85 ~ 140 KgXiphias 70
74mm
6 ~ 19 psi
3.5" ~ 4.8"85 ~ 146 KgXiphias 80
78 ~ 79mm
6 ~ 19 psi
3.8" ~ 5.0"85 ~ 157 KgXiphias 85
83mm
5 ~ 15 psi
4.0" ~ 5.2"85 ~ 200 KgWild Dragon 90
89mm
5 ~ 15 psi
4.2" ~ 5.5"85 ~ 177 KgXiphias 95
99mm
4 ~ 12 psi
4.6” ~ 5.5"85 ~ 185 KgXiphias 105
120mm
3 ~ 10 psi
5.2" ~ 6.0"85 ~ 200 KgDrunken Rhinoceros 128


Mountain Bike / Tire Pressure

Riding Internal Width (Hookless)Tire PressureTire SizeSystem WeightReference Model
Cross Country21mm
23 ~ 34 psi
1.8" ~ 2.15"85 ~ 126 KgNXT29RM27
Cross Country22mm
22 ~ 31 psi
1.8" ~ 2.2"85 ~ 120 KgNXT29UM27
Cross Country
24mm
22 ~ 29 psi
1.9" ~ 2.3"85 ~ 103 KgNXT29UML30
Cross Country
25mm
21 ~ 32 psi
1.9" ~ 2.35"85 ~ 137 KgNXT29UM30
Cross Country27mm
20 ~ 30 psi
2.0 ~ 2.45"85 ~ 120 KgNXT29XM33
Cross Country28mm
19 ~ 27 psi
2.1" ~ 2.5"85 ~ 112 KgNXT29UML34
Cross Country30mm
18 ~ 30 psi
2.1" ~ 2.6"85 ~ 143 KgNXT29VM36U
All Mountain27mm
23 ~ 35 psi
2.0" ~ 2.45"85 ~ 119 KgNXT29XM33
All Mountain29mm
22 ~ 34 psi
2.1" ~ 2.6"85 ~ 132 KgNXT29XML35
All Mountain30mm
20 ~ 33 psi
2.1" ~ 2.7"85 ~ 143 KgNXT29VM36
All Mountain32mm
19 ~ 30 psi
2.15" ~ 2.9"85 ~ 132 KgNXT29XML38
All Mountain35mm
18 ~ 29 psi
2.25" ~ 3.1"85 ~ 145 KgNXT29XM41
All Mountain40mm
17 ~ 25 psi
2.4" ~ 3.3"85 ~ 136 KgNXT29XM46
Enduro30mm
20 ~ 32 psi
2.1" ~ 2.7"85 ~ 134 KgNXT29XM36
Enduro32mm
19 ~ 32 psi
2.15" ~ 2.9" 85 ~ 152 KgNXT29VM40
Enduro35mm
18 ~ 29 psi
2.25" ~ 3.1"85 ~ 134 KgNXT29XM41
Enduro40mm
17 ~ 27 psi
2.4" ~ 3.3"85 ~ 136 KgNXT29XM46
Enduro45mm
15 ~ 25 psi
2.6" ~ 3.5"85 ~ 160 KgNXT29JF52-II
Down Hill30mm
21 ~ 34 psi
2.1" ~ 2.7"85 ~ 136 KgNXT29XD39
Down Hill32mm
20 ~ 32 psi
2.25" ~ 2.9"85 ~ 156 KgNXT29VM40D


Road Bike / Tire Pressure

Riding Internal WidthTire PressureTire SizeSystem WeightReference Model
General RoadHook 19mm
47 ~ 112 psi
23 ~ 42 mm80 ~ 134 KgNXT35RX
General RoadHook 19mm
47 ~ 122 psi
23 ~ 42 mm80 ~ 154 KgNXT60RX
General RoadHook 20mm
38 ~ 106 psi
24 ~ 44 mm80 ~ 180 KgNXT20DRX
General Road
Hook 21mm
36 ~ 100 psi
25 ~ 47 mm80 ~ 134 KgNXT30CRX
General RoadHook 21mm
36 ~ 114 psi
25 ~ 47 mm80 ~ 169 KgNXT65CRX
General RoadHook 22mm
33 ~ 98 psi
26 ~ 49 mm80 ~ 200 KgNXT22DRX
General RoadHook 24mm
30 ~ 82 psi
28 ~ 53 mm80 ~ 138 KgNXT29ARX
General RoadHook 24mm
30 ~ 96 psi
28 ~ 53 mm80 ~ 173 KgNXT65ARX
General RoadHook 25mm
28 ~ 81 psi
29 ~ 55 mm80 ~ 139 KgNXT30CGX
General RoadHook 25mm
28 ~ 91 psi
29 ~ 55 mm80 ~ 169 KgNXT60CGX
General RoadHookless 25mm
29 ~ 60 psi
33 ~ 50 mm80 ~ 138 KgNXT29ARX-Z
General RoadHookless 25mm
29 ~ 62 psi
33 ~ 50 mm80 ~ 163 KgNXT54ARX-Z


Cyclocross Bike / Tire Pressure

Riding Internal WidthTire PressureTire SizeSystem WeightReference Model
CyclocrossHook 19mm
27 ~ 50 psi
28 ~ 40 mm80 ~ 134 KgNXT35RX
CyclocrossHook 19mm
27 ~ 54 psi
28 ~ 40 mm80 ~ 154 KgNXT60RX
CyclocrossHook 20mm
26 ~ 53 psi
28 ~ 40 mm80 ~ 180 KgNXT20DRX
Cyclocross
Hook 21mm
27 ~ 52 psi
28 ~ 40 mm80 ~ 134 KgNXT30CRX
CyclocrossHook 21mm
27 ~ 59 psi
28 ~ 40 mm80 ~ 169 KgNXT65CRX
CyclocrossHook 22mm
25 ~ 51 psi
28 ~ 40 mm80 ~ 200 KgNXT22DRX
CyclocrossHook 24mm
25 ~ 50 psi
28 ~ 40 mm80 ~ 138 KgNXT29ARX
CyclocrossHook 24mm
25 ~ 57 psi
28 ~ 40 mm80 ~ 173 KgNXT65ARX
CyclocrossHook 25mm
24 ~ 48 psi
29 ~ 40 mm80 ~ 139 KgNXT30CGX
CyclocrossHook 25mm
24 ~ 55 psi
29 ~ 40 mm80 ~ 169 KgNXT60CGX
CyclocrossHook 29mm
24 ~ 38 psi
33 ~ 40 mm80 ~ 154 KgNXT45AGX
CyclocrossHookless 25mm
24 ~ 38 psi
33 ~ 40 mm80 ~ 138 KgNXT29ARX-Z
CyclocrossHookless 25mm
24 ~ 40 psi
33 ~ 40 mm80 ~ 163 KgNXT54ARX-Z
CyclocrossHookless 30mm
22 ~ 30 psi
38 ~ 40 mm80 ~ 156 KgNXT45AGX-Z


Gravel Bike / Tire Pressure

Riding Internal WidthTire PressureTire SizeSystem WeightReference Model
GravelHook 20mm
29 ~ 82 psi
28 ~ 50 mm80 ~ 180 KgNXT20DRX
Gravel
Hook 21mm
29 ~ 78 psi
28 ~ 52 mm80 ~ 134 KgNXT30CRX
GravelHook 21mm
29 ~ 89 psi
28 ~ 52 mm80 ~ 169 KgNXT65CRX
GravelHook 22mm
27 ~ 79 psi
28 ~ 55 mm80 ~ 200 KgNXT22DRX
GravelHook 24mm
27 ~ 74 psi
28 ~ 60 mm80 ~ 138 KgNXT29ARX
GravelHook 24mm
27 ~ 85 psi
28 ~ 60 mm80 ~ 173 KgNXT65ARX
GravelHook 25mm
26 ~ 70 psi
29 ~ 62 mm80 ~ 139 KgNXT30CGX
GravelHook 25mm
26 ~ 82 psi
29 ~ 62 mm80 ~ 169 KgNXT60CGX
GravelHook 29mm
20 ~ 60 psi
33 ~ 72 mm80 ~ 154 KgNXT45AGX
GravelHookless 25mm
22 ~ 57 psi
33 ~ 62 mm80 ~ 138 KgNXT29ARX-Z
GravelHookless 25mm
22 ~ 59 psi
33 ~ 62 mm80 ~ 163 KgNXT54ARX-Z
GravelHookless 30mm
19 ~ 48 psi
38 ~ 75 mm80 ~ 156 KgNXT45AGX-Z

Generally, higher tire pressure could make riding easier and thus increase riding speed especially on smooth road, while lower tire pressure could improve comfort and grip. We come up with the following recommendations for bicycle tire pressure.

1. Rougher the terrain, lower the required tire pressure.

Smooth paved roads favor higher pressure for speed, while rough terrain necessitates lower pressure for better traction and control. Mountain bikes, with their wider and knobby tires designed for tackle rough terrain, including loose dirt, rocks, roots, and even jumps, need a lower tire pressure. Lower pressure improves traction and shock absorpition, essential for handing rough and uneven surfaces. Road bike require higher pressure beacuse they are designed to go faster and smoother on even surfaces. 

2. Heavier the system weight, higher the required tire pressure.

Bicycle wheels generally have an important parameter, which is the maximum system weight. Heavier riders may require higher tire pressures to prevent excessive tire deformation and improve efficiency. For about every 5kg of weight, add or subtract 2 PSI for road bikes and 1 PSI for MTB or gravel bikes, but always within the ranges of recomendations.

3. Wider the tire, lower the required tire pressure.

If you use a wider tire, you usually need a wider rim, the required tire pressure should be lower. Generally the tire pressure of fat bike is usually lower than that of mountain bicycle, and the tire pressure of mountain bicycle is lower than that of gravel or road bikes. A wider tire with a lower tire pressure lower tire pressure could improve comfort and grip.

4. A hookless rim needs lower tire pressure than a hook rim.

Tubeless systems often allow for lower tire pressures without the risk of pinch flats, enhancing grip and ride quality.

5. The strength of the rims and the quality of the tires.

If your rims are in high strength and your tires are in great quality, you could run lower or higher tire pressure (wider range of tire pressure) to cope with more diverse riding conditions.

6. Weather and temperature.

Weather and temperature also play a role in determining optimal tire pressure. For example, lower tire pressure should be used in wet conditions, as lower tire pressure provides better grip and ensures safe riding in wet conditions. In higher temperatures, we should also lower the tire pressure a little to avoid blowouts.


F.A.Q.

1. Why is the right tire pressure important?

Too high or too low tire pressure will not only affect the service life of the tires and rims and the riding experience, like poor driving strbility in inclined positiion or poor damping, but also affect the safety of riding, such as tire blowouts or insufficient grip. 

2. How to check your bicycle tire pressure?

To measure the tyre pressure in your tyre, you’ll need a tyre pressure gauge, or a pump fitted with a pressure gauge. When connected to the valve on your bike’s tyre, you’ll see what pressure the tyre is currently inflated to.

3. How to caculate the tire pressure that suit for your bike?

You could refer to the Bicycle Tire Pressue Chart above, or use tire pressure calculator:


* System Weight = Rider Weight + Cargo Weight + Bicycle Weight

* Tire Pressure Calculator sram.com/guides/tire/pressure.

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