What is the front tire pressure for harley Davidson dyna wide glide?

Most people I ride with run 40psi year round. Front and rear. Owner's manual may differ or tire may say different. But I have a friend that has rode rain, snow or shine. 365 days a year for 30 years. He has the best maintained bike I've ever seen and he runs 40psi on his chopper and dresser. Very set in his ways and for a good reason.