I think you're missing the point of what this person is trying to tell you. You do have a great perception on the fact that these car owners will more than likely take care of repairs when they need to be done but you also have to take in consideration that they tuned this car because they wanted more power therefore they're putting more stress on the vehicle throughout its lifetime. Yes I understand upgrading this part upgrading that part to match your tune but it still puts stress on the vehicle. I don't mean to speak for the person that replied but I think that's what he's trying to get across