While its all very easy and straightforward to say that you should change your windshields wiper blade every six months, this is a task that belongs in that category of things that are easier said than done. First of all, changing wiper blades can be confusing especially for someone who has yet to do this particular task before. First thing you should do is to buy the right size of blades for your vehicle. Buying the wrong size will cost you another tiresome trip to the store. Next, you need to make sure that you change your wiper blades when the weather is sunny. You wouldnt want to change those wiper blades in the middle of a rainy morning, would you? If you have not tried changing wiper blades before, you can ask help from a friend or family member who has done it already or you can go online for web sites that give step by step instructions and guides on changing your wiper blades.