30mm Carbon Rims Details,as below:

30mm tubeless ready carbon rims WU30TL suitable for both rims brake and disc brake rider.Eaiser for climbing and long distance ride.As the rims picture,you would be find the 30mm rims with grooved brake surface,also can call it laser caving brake surface.The grooves do little harm in the dry, and help a lot in the wet.For the grooves brake track,i think it is better for particular countries,like some very rainy or wet place.Better for brake temperature reduction and drainage.

How much spoke tension should I use?

Although the maximum spoke tension of our rims is 150kgf, we do not recommend to lace your 
wheelset so intense. Generally, 3 of charging tension are involved in wheel building. 
Riding comfortability and performance are supposed to be considered while choosing charging 
tension.

A. Tension for "transportation riders" (Comfortability)

80-90kgf are ideal for regular transportation riders or exercise on a regular basis.

B. Tension for "enthusiast riders" (Balance)

100-110kgf are good for people with enjoyful and training purpose.

C. Tension for "professional riders" (Performance)

120-130kgf are charged for riders who are expertized in riding or competition.