Tire size selection guide for bike rims

Whether you’re shopping for new bike rims and need to pick matching tires, or you already own rims and are looking for the right tire size, this chart is your go-to reference for making the perfect choice.

Choosing the right tire size for your rims isn’t just a matter of fit—it’s critical for your riding safety, performance, and overall experience. Here’s why it matters:

Enhanced Safety: Properly matched tires and rims prevent issues like tire blowouts, bead separation, or loss of control during rides, especially at high speeds or on rough terrain.
Optimal Performance: The right tire size maximizes traction, handling, and aerodynamics. For example, a tire that’s too narrow for a wide rim will lack stability, while an oversized tire can feel sluggish and compromise maneuverability.
Improved Durability: A well-fitted tire experiences even wear and reduced stress on the sidewalls and bead, extending both tire and rim lifespan.
Smoother Riding Experience: Correct tire-rim compatibility ensures consistent air pressure retention and better shock absorption, making your rides more comfortable on roads, gravel, or trails.

Tire width(A)		Rim outer width(Tubeless/Clincher)(B1)						Rim outer width Tubular(B2)			Max.tire pressure
[mm]	[inch]	23mm	24-26mm	27-28mm	29-30mm	31-36mm	37-40mm	21mm	23-25mm	26-28mm	[bar]	[psi]
20	0.80	●						●	●	●	9.5	138
23	0.90	●	●					●	●	●	9.0	131
25	1.00	●	●					●	●	●	8.5	123
28	1.10	●	●	●				●	●	●	7.8	113
30	1.20	●	●	●					●	●	7.2	104
32	1.25	●	●	●					●	●	6.8	99
35	1.35	●	●	●	●				●	●	6.0	87
37	1.40		●	●	●					●	5.7	83
40	1.50		●	●	●	●				●	5.5	80
42	1.60		●	●	●	●				●	5.2	75
44	1.70		●	●	●	●				●	5.0	73
47	1.85		●	●	●	●	●			●	4.7	68
50	1.95		●	●	●	●	●			●	4.4	64
52	2.05		●	●	●	●	●			●	4.1	59
54	2.10		●	●	●	●	●			●	3.8	55
57	2.20		●	●	●	●	●			●	3.5	51
60	2.35		●	●	●	●	●				3.2	46
62	2.50			●	●	●	●				2.9	42
65	2.60				●	●	●				2.7	39
68	2.70				●	●	●				2.5	36
71	2.80					●	●				2.3	33
74	2.90					●	●				2.1	30
76	3.00					●	●				2.0	29
81	3.20						●				2.0	29
89	3.50						●				2.0	29

(A) Refer to technical information on tires.

For example: road: 622 x 23 // mtb: 29 x 2.35

(B) Refer to technical information on DT Swiss rims.

For example: 622 x 20

(tubetype, tubeless ready and tubeless).

The tire pressure must stay within the tire manufacturers

specified pressure but never exceed

the max. tire pressure specified by DT Swiss.Other

systems are not approved by DT Swiss

*Attention: old tire pressure information on DT Swiss rims loses its validity

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Tire size selection guide for bike rims