Impulse24 wrote:
Dually tires are secured by studs and lug nuts and do not revolve separately, so there is no friction generated between the tires.
I'm only going to respond to this statement as I'm on break at work and I'm a bit time constrained.
Your statement is only true IF the tire size allows for sufficient gap between the two tires. All the way around, including at the bottom where a tire will typically bulge a bit due to weight. If the tires come together at any point, then there IS friction as each tire is flexing. It's not friction due to one tire rotating at a different speed than the other, but ANY contact will produce some friction and rubbing and when you remember that those tires are doing many revolutions per minute, that little bit of friction and rubbing add up. It adds up into heat, which is a destroyer of tires.
Even if they don't quite rub, each tire is producing heat, and having one tire right next to the other will cause that sidewall to get hotter than the one open to the air. Too much heat and the tire goes BOOM. A bit of a gap allows air movement to move the heat away and keep things at safe temps.
So, make sure that the width of tire you go to keeps a safe gap between the duallies.
