No-one has mentioned IAS yet - so I will!
PANS-OPS 8168 para 1.6 gives the range of speeds for calculation of various segments of the approach procedure. Base turn is part of the initial approach, and for a Category C aircraft the speed range is 160 - 240 knots. In still air you will stay within the procedure anywhere within that range. So if you have a "tightening" crosswind for the turn onto the inbound track, make sure you are at low speed. Simple and practical.
It is unsafe to adjust the outbound track. Also simple.
Cheers, TP