I have a 2013 Heartland Trail Runner 25RL. I recently had a blow out after 7 years. I’m looking for any advice and recommendations please. I have ST205/75/15’s installed now. I’ve read, on the internet, that I can up size to 225/75/15’s or 215/75/15. I believe I have enough side to side room. Top space seems to be limited to maybe 2 inches. Any suggestions please?