Rick; the reluctence by marketing departments of manufactures to use tiltmeters as origenal equipment and thereby indirectly admit that tractors can rollover reminds me of the origenal foray of Ford in 1956 into seat belts,padded dash and dished out steering wheels- it was before its time. However tractor buyers,at least a substantial %, are a different market than car buyers,with considerable more research going into the decision of what to buy,plus some scary previous experience. The fact that tractors have ROPS and seat belts means the cat is already out of the bag-- tractors can maime or kill you. An ad campaign that intelligently plays to further reducing that 'inherent' risk complements a buyer's intelligence. What you are saying is "here is the necessary equipment to prevent injury", or the rental supplier is saying " hey novice,here is a device to protect you" and reduce his liability. Marketing departments are notorious followers. When they lead, like Volvo pushing safety, they are pegged as "innovative", get awards in advertising and ,coincidently, sell cars. I have colleages who will allow their kids and wives to only drive dual airbag cars etc. Often,such cutting edge ads solidfy a paradigm that was out there ready to gel. I think tractor safety is one of those paradigms as evidenced by a long recent thread on TractorByNet about brown stain-in-the-underwear with near tip-overs. Such visceral responses get your attention and you get serious about reducing the risks.
RCH