Low sprocket min GRX-812
I have a Jamis Regnegade S2 1x11 with a GRX-812 RD. Specs are:
GRX 812 specs:
Top sprocket: Max. 11T/Min. 11T
Low sprocket: Max. 42T/Min. 40T
Total capacity: 31T
It currently has a 11T-40T cassette. I'm looking at a set of build wheels for the road with a 11T-30T cassette. Would this be pushing the Low Sprocket Min too much? Would it just result in poor shifting or would it actually be dangerous? I'm guess I don't really get the minimum spec since there is probably a sprocket close to 30T somewhere in current cassette and everything works fine.
Thanks in advance,
George