Choosing the right tire and wheel combination for a classic truck like the 1981 Dodge stepside can significantly enhance its appearance and stance. It's great to see the interest in maintaining the truck's original look while also giving it a more robust and filled-out appearance at the rear.
For the 1981 Dodge stepside truck, the recommendations of 275/70-15 on an 8" wheel seem to be a popular choice for a balanced look without going too extreme. This size should provide a wider stance that fills out the rear fender wells nicely while maintaining a proportionate look with the front of the truck.
When considering tire and wheel sizes, it's also important to think about the overall diameter of the tire. This can affect the speedometer reading and the truck's handling characteristics. The mentioned 275/70-15 size offers a good balance between width and diameter, ensuring that the truck maintains good handling and drivability.
Regarding the front tires, sticking with the factory wheel size and opting for a slightly narrower tire, like a 235/70-15 or 235/75-15, can maintain the classic look while ensuring the front end isn't overly bulky compared to the rear.
As for the steel wheels to match the baby moons, there are several aftermarket companies that specialize in classic and vintage-style wheels. Companies like Coker Tire, Summit Racing, and Jegs offer a variety of steel wheels that would suit the 1981 Dodge stepside. These wheels are available in different widths and backspacing options to achieve the desired look and fitment.
Lastly, it's always good practice to double-check the fitment and clearance, especially if the truck has any suspension modifications. Ensuring proper clearance from the fender and suspension components is crucial for avoiding any rubbing issues and maintaining safe driving conditions.