Originally Posted by
GhostRider62
I used to use the Contin GP4000 reflective sidewalls, too.
Now on my overnight riding wheels, I put black reflective tape on the rim. At riding speed the gaps fill in and the reflected light appears continuous. This only works if you are using aero rims. On box rims, it won't. (also use reflective ankle straps, reflective tape elsewhere at various angles, reflective gillet, etc).
When Bicycling! magazine did a test of front and rear lights and reflectors of various types a couple of decades ago, they found that for front, rear, and side views, nothing else came near being as effective as reflective ankle bands to rivet the attention of drivers and to identify you as a cyclist (as well as enable them to gauge closing distance).
That was before the advent of blindingly bright LED lights, but the principle remains the same. By all means, use all the stationary lights you like, but use reflective ankle bands, too.