Weimaraners live on average of 13 years and are pretty healthy dogs but Weimaraners do have some health problems that they're more susceptible to than other dogs such as entropion, hypertophic osteodystrophy, spinal dysraphism, hemophilia A, distichiasis, canine hip dysplasia (CHD), and von Willebrand's disease .
As long as you keep the dog fed properly, and take it to the vet when needed for regular checkups so things can be caught soon enough then the dog should be a happy healthy dog.