Ford has many issues with bolts, as head bolts and lug nuts are only to be used once, then need new ones once removed. This statement goes back a few years. VW has the same issue with bolts. As someone stated, Dodge or RAM trucks has an issue with exhaust bolts. So the $500.00 question is, do you change them out now before they break and possible breaking a couple while doing so or wait until they break?