I have a problem and I have no clue as to what it is. Everytime I brake, I hear a somewhat smooth grinding noise. It's not rough and the truck still comes to a stop pretty smoothly, but it sounds as if something is maybe rubbing. I know it's not the front disc brakes and it can't possibly be tires rubbing. Any thoughts would be greatly appreciated.

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1997 Ford F-150 XLT 4x4 extended cab short bed
Options: Off Road package, Towing package, 4.6L V8, Captain's chairs, LS rear axle, green with two tone tan
Modifications: Westin Brushguard
Pioneer Premier cassette receiver with 6-disc CD changer
LT265/70/17 (32")Goodyear Wrangler AT/S
3" Performance Accesories Body Lift
Future mods: Superchip
Nerf bars(Manik)
Spray-in-bedliner(Line-X)
KC Daylighters
Winch(Ramsey or Warn)with hidden mount
Trailmaster 4" Lift Kit
35" BFGoodrich tires
16X8 or 16.5X9.75 Wheels
Dual exhaust(Ravin or Flowmaster)
Next Generation K&N II FIPK Kit
Custom hood with air intake
Seat covers(water proof)

 

Do you hear it while you take off for a little while too??? If so It might be a problem I had on my Acura. Man this problem bugged me for 2 weeks, finally I had a buddy stand in a parking lot while I drove a slow circle around him. He quickly discovered what the problem was and started laughing. It seems the practical joke guy at my last job got me. He put a bunch of small rocks in the center cap of my front drivers side wheel. and you would only hear it on take off or coming to a stop or a slow speeds. ( At high speed the cintreifical (sp?) force kept the rocks pinned out and didn't make any noise. ) Its just a thought and If not then I have NO clue.

 

There is a long list but, did you checked if one of the front brakes pads wear sensors are not touching the rotors?

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1998 F150 4x4 Lariat Supercab Flareside 5.4L in Oxford White/gold, ORP, Tow Package, 3.55 Gears.

Modifications: K&N FIPK, Stepshield door sill protectors, Performance Accesories 3" body lift, Lift Lips and Daystar front sway bar polyurethane bushings.

See photos at http://www.communicomgroup.com/jmtruck