* Potential for rubbing: A 15-inch tire, even with the same aspect ratio, will have a larger overall diameter. This will cause the tire to rub against the fenders, suspension components, or bodywork, especially during turning or when the suspension is compressed.
* Speedometer inaccuracy: The larger tire diameter will affect the speedometer's accuracy, making it read slower than your actual speed.
* Odometer inaccuracy: Your odometer will also be inaccurate, recording fewer miles than actually driven.
* Possible damage to other components: The larger tire might put strain on other components of the drivetrain, such as the axles, bearings, and transmission.
While some aftermarket rims and tires might *seem* to fit, the potential for damage and safety risks make this a modification best avoided unless you have a thorough understanding of vehicle mechanics and are prepared for extensive modifications (like lifting the truck and potentially modifying the fenders). Sticking with the correct size tire for your vehicle is strongly recommended.