Originally Posted by Macbow
My drivers side brake rotor has a hairline crack across the width.
Was pointed out at my tire shop.
Anyone been there done that?
2002 Pace Arrow.
"hairline" cracks in both rotors and drums are quite the norm. You'll find them on about 99.9999% of the trucks/motorhomes/over the road trucks and more. Our guidelines for brake inspection in my career as fireman and inspecting our brakes in the morning for a days duty was, hair line cracks are fine, no matter how many. But, if those hairline cracks traveled up and over the other perimeter of the rotor, the fire truck was IMMEDIATELY put out of service.
Some shops may be a bit over protective and or, maybe trying for a sale on both materials and labor. And, some are just cautious and are trying to do a good job. Your hairline cracks are normal and, while nothing to be concerned about for now, it's advisable to keep an eye on them on an every-so-often basis.
P.S. Talk about hairline cracks, here's the present (and has been that way for 40,000 miles) condition of just one of our drums on our '04 Itasca Horizon 36GD with the C-7 330HP CAT.