The recommended maximum air pressure for the front and rear tires of the Royal Enfield Standard 350 BS4 model may vary depending on factors such as load, riding conditions, and personal preference. However, as a general guideline, the maximum air pressure for the front and rear tires of the Royal Enfield Standard 350 BS4 model is typically around 32-35 PSI (pounds per square inch).
To ensure accurate information and precise recommendations, it is always best to refer to the owner's manual or contact an authorized Royal Enfield service center. They can provide you with the specific tire pressure recommendations for your motorcycle model, taking into account any updates or changes that may apply.