The noise getting louder when you turn one way, is a sign you have a wheel bearing/hub going south on you. The loaded bearing on a turn will increase the sound, so in your case where a left turn makes it worse, take a look at the right bearing/hub
97 Sahara, 74 Renegade, 72 CJ5, 55 Willy's (the Beast) Boss 302, 6:34 gearing, Bose 901 speakers.
God I miss that Jeep. Forgot the kinda Jeep, 80 SX4.