Replacing Tires

[monik7]

I have a 2012 Itasca Navion iQ. Current mileage is 27,600. The front right tire has a rather bald tread on the outside edge. The left doesn't have that nor the duals on the back. Does that mean an alignment problem? I think I'll have to replace it. I think I read somewhere where someone said to replace all tires at the same time? That would cost a lot for six tires. This is my first RV so I'd sure appreciate some advice on what most people do. Thanks.
Sandi

[stuhly]

Just do the front.

[Timberdog]

I just replaced my rears, fronts were good. Yes, you need an alignment, get one after the tire install.

[sirpurrcival]

If the back tires are still in good shape you shouldn't have to replace them. Just keep track of their age and condition and change them when the time comes. I like to change tires in pairs. Especially steer tires. If you do that, you can keep the other replaced tire as a spare for emergencies. Recommended but not absolutely necessary if the other steer is in really good shape and you can get a replacement of the same type for the problem tire.