I've been hearing this annoying beeping sound in my gauge cluster whenever i drive over 55mph or when i rev the engine upto 5K rpm. It goes on and never goes off. And all i did was change the air filter and wheels+tires. Would it have anything to do with the PS computer or pump? I noticed steering feels harder now. The beeping is a pattern like: beep.....beep.....beep.....beep.....beep.....beep, etc. non stop.

 

is there a pause? like 5 beeps pause, 5 beeps? proabably the PS computer. that what it does. and since you PS has changed. I bet that was it. did you put same diameter tires on?