The recommended tire pressure for a Royal Enfield Classic 350 can vary depending on factors such as the rider's weight, road conditions, and personal preference. However, as a general guideline, the recommended tire pressure for the Royal Enfield Classic 350 is typically around 25-28 psi (pounds per square inch) for the front tire and 28-32 psi for the rear tire. It is always best to consult the owner's manual or contact a Royal Enfield authorized service center for the most accurate and up-to-date information regarding tire pressure for your specific motorcycle model.