Welcome to the forum TxTwoSome. The 14 in should be fine but a upgrade on tires might be wise. If you need the extra height the 15 would give and you need it to level the rv i would go with the 15. maybe if you plan on fast driving, whichI don't recommend, the 15 would turn less LOL. AJMO
Thank you both for the info. I do not plan on towing over 65 will be in the slow lane at 62-63 most likely. I will look into the better tires before I make my trip to Kentucky in May. Till then I will get some miles locally to get used to the rig. This is the first TT we have owned and it is all new to us.