Yes, it is possible to put a wider seat on a road bike. The seat, also known as the saddle, is one of the components that can be customized to suit the rider's preferences and comfort. Many road bikes come with narrow and lightweight saddles that are designed for performance and efficiency. However, if you find that a wider seat would provide you with more comfort and support, you have the option to replace the original saddle with a wider one.
When choosing a wider seat for your road bike, consider factors such as the width, padding, shape, and materials used. It's important to find a saddle that fits your body shape and riding style while providing the necessary support and comfort. It's recommended to visit a local bike shop where you can test different saddle options and get expert advice on choosing the right one for your needs.
Keep in mind that changing the saddle width may also affect your riding position and overall bike fit. It's a good idea to make adjustments to the saddle height and angle after installing a new seat to ensure proper alignment and comfort.