The first thing I would do on any TT or FW is inspect the tires. If they are a cheap brand ST type tire I would replace them with a brand name LT tire. We had 2 blowouts on cheap OEM tires when we had our FW. The blowouts were within 5 miles of each other and did significant damage to the FW. They put the cheapest tires they can on TT's and FW's and they are a disaster waiting to happen. The term tire bomb comes up quite a bit on various RV forums. Now if the previous owner replaced the tires then that could mitigate the issue.