* Bolt Pattern: While both are Dodge/Chrysler products, the bolt patterns (number of lug nuts and their spacing) might be different. A mismatch here means the wheels won't even bolt onto the hubs. You *must* verify this is the same for both vehicles.
* Wheel Offset: Offset refers to how far the wheel mounting surface sits in relation to the centerline of the wheel. Different offsets can cause clearance problems with the suspension, brakes, or fenders. A significant difference could mean the wheels rub or even hit parts of the vehicle.
* Hub Bore: The center hole of the wheel (hub bore) needs to be the correct size to fit snugly over the hub of the Ram. A wheel with too small a bore won't fit, and one with too large a bore might wobble or be unsafe.
* Wheel Diameter and Width: Even if the bolt pattern and offset match, the wheel diameter and width might be too large or small for the 2003 Ram's wheel wells and suspension components. This can lead to rubbing.
To find out for sure, you need to:
1. Determine the bolt pattern (PCD) and offset for both the 2011 Durango wheels and the 2003 Ram's hubs. This information is usually found stamped on the wheels themselves or can be looked up online via a wheel size chart, specifying the year, make, and model of both vehicles.
2. Check the hub bore diameter for both.
3. Compare the wheel diameter and width.
Only if all these specifications are identical or very nearly so is there a high chance of compatibility. Otherwise, you'll likely need wheel adapters (which are generally not recommended unless you're an expert) or different wheels altogether. Using adapters can compromise safety, potentially leading to wheel failure.