tire pressure vs fuel economy
Hi all, In a recent thread, I asked about tire pressure vs ride. I found I could go as low as 45 psi on the front tires--but decided to go for 55 psi. Ride was improved on the highway. Steering ...
Forum Discussion
Within reasonable (i.e. safe) limits, the difference in tire pressure for an RV will not make a noticeable difference in fuel mileage. Most of the fuel goes to overcoming air resistance and (on hills or in cities) hauling the weight around. Rolling resistance of the tires is negligible in comparison. If your tires are wildly underinflated, of course, that's a different matter, and probably in that case gas mileage is the least of your concerns and costs.
