I’ve no experience on 650b rims so looking for a bit of advice.

I’ve been using Mavic 521’s for years, worked well for me, mavic seem to do a 27.5 equivalent (421/423) but don’t seem as good.

Not mad keen on the Stans Flow, seen too many fail in real life.

Suggestions?

DT Swiss EX471’s? Gwin seems to like them!

EX471s here too.

Interesting, I’ve avoided DT Swiss for years due to the fact they didn’t stay round for any length of time.

I’m guessing things have changed?

Easton ARCs are good rims, come in 24/27/30mm widths.

Yes – new generation DT rims are excellent. Super solid and great weights for their widths/strength. EX471 is popular in WC DH, and are a good weight. Build really well too.

I think the new Dtswiss Xm481 looks interesting

https://www.dtswiss.com/Components/Rims-MTB/XM-481

30mm inner width and 490g.

Although I’ve just bought a set of the Carbon AM Tesla evo wheels from superstar in their 25% off sale, couldnt resist giving them a try for £450.