Front tires will always wear faster than rear tires. Remember it's the front tires that do all the steering while the back tires just follow along. The steering action alone will scuff the rubber off the tires. A very slight, hardly noticable alignment problem is another factor. Very few alignments are 100% accurate.
If you want great wear out of your tires you MUST..
ROTATE the tires. I know it ain't cheap to rotate all 6 tires on a Dually BUT that's the price you have to pay if you want to own a Dually and want the best tire mileage.
Keep them properly inflated
Inspect them for ANY irregular tread wear. Did you know a tire will talk to you?? You need a tread depth gauge and a tire will speak volumes. Using the tread depth gauge, check the tread depth across the tire.
Less tread on one side than the other? Get the Alignment checked.
Less tread on both sides than in the center? Been running with low air pressure.
Less tread in the middle than both sides? TOO much air pressure.
I could go on but there is no need as there is, and has been, a page at montanaowners.com that will cover most a
TIRE FAQs