Welcome to iRV2. It is best to follow the recommendation of the manufacturer of your coach. Consider going to the mail iRV2 main page. Scroll down to the Owners' Corner. See if there is a forum for the Brand of coach you own. Post this question there. The quickest and most accurate answers come from someone who owns a coach like yours.
2005 Newmar KSDP 3910 + GMC ENVOY XUV 37K lbs Moving Down The Road
The Avatar Is Many Times Around The USA
Nobody Knows Your Coach Like Somebody Who Owns One Just Like Yours