Having the right tire pressure is a critical ingredient to having your wheels perform at their best. If you change to wider rims or wider tires, your tire pressure must be lowered. The below charts take this into account and help guide you to an appropriate starting point, and then you can adjust up or down slightly to suit your needs.
Rider weight, experience level, terrain, riding style, and the current trail conditions will all affect the tire pressure. Once you find your best all-around pressure, you’ll be able to lower it slightly for wet conditions, or increase it slightly for fast hard packed conditions like at a bike park for example.
We’ve divided our rims into three categories based on their most common use.
1. Smooth Roads
2. Gravel/Rough Roads
3. Mountain Biking/Plus/Fat
|
RIM WIDTH
TIRE SIZE RIDER WEIGHT |
R (25, 35, 45, 55, 65, 88) / AR (35, 36, 45, 46) 17.9mm-21mm |
AR56 23mm |
|||||
| 23mm | 25mm | 28mm | 28-30mm | 32-35mm | 35-38mm | 38-42mm | |
| 100lbs/45kg | 61 | 52 | 44 | 39 | 35 | 33 | 29 |
| 110lbs/50kg | 66 | 55 | 48 | 41 | 37 | 35 | 32 |
| 120lbs/54kg | 70 | 59 | 51 | 44 | 39 | 38 | 35 |
| 130lbs/59kg | 75 | 64 | 54 | 46 | 42 | 40 | 36 |
| 140lbs/64kg | 80 | 69 | 58 | 50 | 44 | 42 | 38 |
| 150lbs/68kg | 86 | 72 | 61 | 53 | 47 | 44 | 42 |
| 160lbs/73kg | 89 | 75 | 64 | 55 | 50 | 47 | 44 |
| 170lbs/77kg | 93 | 80 | 67 | 57 | 52 | 49 | 45 |
| 180lbs/82kg | 97 | 82 | 70 | 61 | 54 | 52 | 47 |
| 190lbs/86kg | 102 | 85 | 73 | 62 | 56 | 54 | 49 |
| 200lbs/91kg | 104 | 89 | 75 | 64 | 58 | 55 | 50 |
| 210lbs/95kg | 107 | 90 | 77 | 67 | 59 | 56 | 52 |
| 220lbs/100kg | 109 | 91 | 78 | 68 | 60 | 58 | 53 |
| 230lbs/104kg | 111 | 94 | 80 | 68 | 61 | 59 | 54 |
| 240lbs/109kg | 112 | 95 | 81 | 69 | 62 | 60 | 55 |
| 250lbs/113kg | 113 | 95 | 81 | 69 | 62 | 60 | 55 |
| Maximum Pressure* |
R-rims: 120psi AR-rims: 110psi (75psi for hookless) |
AR-rims: 110psi (75psi for hookless) | |||||
The maximum inflation pressure is measured with 25C tires (tubeless setup).
|
RIM WIDTH
TIRE SIZE RIDER WEIGHT |
AR (35, 36, 45, 46) 21mm |
AR (24, 28, 36 (650B), 56) 22mm-23mm |
WR (35, 38, 45, 50, 65, 35 (650B)) 25mm |
|||||||||
| 28-30mm | 32-35mm | 28-30mm | 32-35mm | 35-38mm | 38-42mm | 42-45mm | 28-30mm | 32-35mm | 38-42mm | 42-45mm | 47-50mm | |
| 100 lbs./ 45Kg | 31 | 28 | 29 | 26 | 25 | 23 | 20 | 29 | 26 | 22 | 19 | 15 |
| 110 lbs./ 50Kg | 33 | 30 | 32 | 28 | 27 | 25 | 22 | 31 | 27 | 24 | 20 | 16 |
| 120 lbs./ 54Kg | 36 | 32 | 34 | 30 | 29 | 27 | 24 | 33 | 30 | 26 | 22 | 17 |
| 130 lbs./ 59Kg | 38 | 34 | 36 | 33 | 31 | 29 | 25 | 34 | 31 | 27 | 24 | 18 |
| 140 lbs./ 64Kg | 39 | 36 | 37 | 35 | 33 | 30 | 27 | 36 | 33 | 29 | 26 | 19 |
| 150 lbs./ 64Kg | 42 | 38 | 40 | 37 | 35 | 32 | 28 | 39 | 35 | 30 | 27 | 20 |
| 160 lbs./ 73Kg | 44 | 40 | 42 | 38 | 37 | 34 | 30 | 41 | 37 | 32 | 28 | 21 |
| 170 lbs./ 77Kg | 46 | 42 | 44 | 40 | 38 | 35 | 31 | 43 | 38 | 34 | 29 | 22 |
| 180 lbs./ 82Kg | 49 | 44 | 46 | 42 | 40 | 37 | 33 | 45 | 40 | 35 | 31 | 23 |
| 190 lbs./ 86Kg | 51 | 46 | 47 | 43 | 41 | 38 | 34 | 46 | 42 | 36 | 32 | 24 |
| 200 lbs./ 91 Kg | 52 | 47 | 49 | 45 | 43 | 39 | 35 | 48 | 43 | 37 | 33 | 24 |
| 210 lbs./ 91Kg | 54 | 48 | 50 | 46 | 44 | 40 | 35 | 49 | 44 | 38 | 34 | 25 |
| 220 lbs./ 100Kg | 55 | 49 | 51 | 47 | 44 | 40 | 35 | 50 | 45 | 39 | 34 | 26 |
| 230 lbs./ 104Kg | 55 | 49 | 52 | 47 | 45 | 41 | 36 | 51 | 46 | 40 | 35 | 26 |
| 240 lbs./ 109 Kg | 55 | 50 | 53 | 47 | 45 | 41 | 36 | 51 | 46 | 40 | 35 | 26 |
| 250 lbs./ 113Kg | 56 | 50 | 53 | 47 | 45 | 41 | 36 | 52 | 46 | 41 | 36 | 26 |
| Max Pressure* | AR-rims: 110psi (75psi for hookless) |
AR28/AR36 650b: 110psi AR24: 50psi (hookless-only) |
WR-rims: 80psi (55psi for hookless) | |||||||||
The maximum inflation pressure for AR-rims (except AR24) is measured with 25mm tubeless tires mounted. The inflation limit of WR-rims is measured with 28mm tubeless setup.
If the recommended tire pressure is near or over the max pressure, it is suggested to move up in tire volume.
|
RIM WIDTH
TIRE SIZE RIDER WEIGHT |
29C06, 650BC09, 26C02, 29C19, AM724, XC925, XC725 22mm-25mm |
26C03, AM927, AM727, AM728, EM928, 29C07, 650BC05, AM930, AM730 27mm-30mm |
26C05, 650BC13, 29C14, EN932, EN732, AM933, AM733, AM735, AM935 31.6mm-35mm |
26C06, AM740, 650BC14, 29C15 40mm-45mm |
RSNOW03 60mm |
RSNOW05 70mm |
FAT680, FS680 80mm |
||||||||||
| 2 | 2.1 | 2.25 | 2.4 | 2.35 | 2.4 | 2.5 | 2.5 | 2.6 | 2.8 | 2.8 | 3 | 3.8 | 4.5 | 4.5 | 5 | ||
| 120 lbs. / 54Kg | F R |
18-21 19-22 |
17-20 18-21 |
16-19 17-20 |
15-18 16-19 |
16-19 16-20 |
15-19 16-19 |
15-18 15-19 |
14-18 15-19 |
14-18 15-19 |
13-17 14-18 |
12-13 13-15 |
11-12 13-14 |
5 5 |
3.5 3.5 |
3 3 |
2 2 |
| 120-140 lbs. / 54-64 Kg | F R |
19-22 19-23 |
18-21 18-22 |
17-20 17-21 |
16-19 16-20 |
16-20 17-20 |
16-19 17-20 |
15-19 16-19 |
15-19 16-20 |
14-18 15-19 |
14-17 14-18 |
12-13 14-15 |
11-12 13-14 |
6 6 |
4.5 4.5 |
4 4 |
3 3 |
| 140-160 lbs./ 64-73 Kg | F R |
19-23 20-24 |
18-22 19-23 |
17-21 18-22 |
16-20 17-21 |
17-20 18-21 |
17-20 17-21 |
16-19 17-20 |
16-19 17-21 |
15-19 16-20 |
14-18 15-19 |
13-14 15-16 |
12-13 14-15 |
7 7 |
5.5 5.5 |
5 5 |
4 4 |
| 160-180 lbs./ 73-82 Kg | F R |
20-24 21-25 |
19-23 20-24 |
18-22 19-23 |
17-21 18-22 |
18-22 19-23 |
18-21 18-22 |
17-21 18-21 |
16-21 17-22 |
16-20 17-21 |
15-19 16-20 |
13-14 15-17 |
13-14 15-16 |
8 8 |
6.5 6.5 |
6 6 |
5 5 |
| 180-200 lbs./ 82-91 Kg | F R |
22-26 22-27 |
21-25 21-26 |
19-24 20-25 |
18-22 19-23 |
19-23 20-24 |
19-23 19-24 |
18-22 19-23 |
17-22 19-24 |
17-21 18-23 |
17-20 18-22 |
14-15 16-18 |
13-15 16-17 |
9 9 |
7.5 7.5 |
7 7 |
6 6 |
| 200-220 lbs./ 91-100 Kg | F R |
23-28 24-29 |
22-27 23-28 |
21-25 22-26 |
20-24 21-25 |
20-25 21-26 |
20-24 21-26 |
19-23 20-24 |
19-24 20-25 |
18-23 19-24 |
18-22 19-23 |
15-16 18-19 |
14-16 17-18 |
10 10 |
8.5 8.5 |
8 7.5 |
7 7 |
| 220-240 lbs./ 100-108 Kg | F R |
25-30 26-31 |
24-29 25-30 |
22-27 23-28 |
21-26 22-27 |
22-27 23-28 |
22-26 22-27 |
21-25 22-26 |
21-26 22-27 |
20-25 21-26 |
19-23 20-25 |
16-18 19-20 |
16-17 18-19 |
11 11 |
9.5 9.5 |
9 9 |
8 8 |
| Max Pressure | MTB rims: 40psi | Plus rims: 35psi | Fat rims: 25psi | ||||||||||||||
1. All the calculations of pressures are based on tubeless installation, given rider weight, average bike weight, specific inner rim width, and standard tire casing. Enduro/DH casing tires can run slightly lower pressure.
2. The tire sizes and rider weights listed are based on our customer profiles and common riding habits. If the charts don’t apply to you, please leave a comment or contact us for psi recommendations.
3. Never over-inflate. If the tire does not seat at a modest pressure, just deflate it and troubleshoot the problems. DO NOT exceed the MAX pressures we set.
4. If the recommended pressure is out of tolerance (minimum or maximum) with the tire manufacturer, then you may need to change the tire size to better suit the rim.
5. Check your tire pressure before you ride as they lose air over time.
Please leave a comment or contact us (sales@lightbicycle.com) if you have any questions about tubeless installation.
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September 8th, 2020 | Light Bicycle
COMMENTS
Mike 2021/12/13
LightBicycle 2021/12/18
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