Hi, depends on what brand of airbags you have, but I had a similar coach with the firestone airbags. Rv shop said they inflated them to 60 lbs psi. That gave support but was a bit soft so you don't get too harsh a ride. Wouldn't personally inflate them beyond about 85 lb psi, would suggest starting at 60 and take it from there. If you add what you have to your post, others that are more familiar with this set up can best reply. I am a bit of a rookie too
