* Rubbing: The wider tire might rub against the fenders, suspension components, or body panels, especially during turning or with a full load.
* Speedometer inaccuracy: The taller sidewall will affect your speedometer's accuracy.
* Problems with the speedometer cable: Depending on the year and configuration, it could cause problems with the speedometer cable.
* Handling issues: The change in tire size could negatively affect your vehicle's handling and braking.
Before installing these tires, it's crucial to verify compatibility. Consult your owner's manual, the sticker on the doorjamb, or a tire professional to ensure the P275/60/15 tires will fit your specific 1994 Chevy Silverado 1500 without causing problems. A slight increase in size might be acceptable, but a significant jump like this requires verification.