Rythmic grumble in left front

It sounds like it could be a wheel bearing. Check your tire and see if it has a rough wear pattern, if not, I would take a closer look at the left front wheel bearing. Jim

I agree with Jim's answer. Most likely a wheel bearing but could be a tire. We usually rotate the tires and take the vehicle for a second test drive to see if the noise moves to a different wheel position. If not, the wheel bearing is the likely cause.