Here's why:
* Size and Rubbing: LT285/70R17 tires are significantly larger than the stock tire size for a 2005 Tahoe 4x2. This increased size will almost certainly cause rubbing on the fenders, suspension components, and possibly the steering components at full turn. This rubbing can lead to tire damage, suspension damage, and loss of control.
* Speedometer Calibration: The larger diameter tire will alter your speedometer and odometer readings. They will read slower than your actual speed, which can lead to speeding tickets and inaccurate mileage tracking.
* Transmission and Differential: The larger tire diameter changes the overall gear ratio. This may cause excessive strain on your transmission and differential, potentially leading to premature wear and tear, or even damage.
* LT vs. P-Metric: The "LT" designation indicates a light truck tire. These tires are typically stiffer and designed for heavier loads and off-road use. This can negatively affect ride comfort and handling on a pavement-oriented vehicle like a 4x2 Tahoe.
Before considering any tire change, you MUST consult your vehicle's owner's manual for recommended tire sizes. To safely fit larger tires, you might need:
* Wheel spacers: These could mitigate some rubbing, but can create other handling issues.
* Lift kit: A suspension lift kit increases the clearance between the tires and the vehicle body, potentially eliminating rubbing.
* Fender trimming/flares: Modifying your fenders can provide extra clearance.
All of these modifications require expertise and should be done by professionals. Even then, the changes to handling and drivetrain could be substantial and may not be advisable.
In short: While it *might* be physically possible to *force* the tires onto the rims and onto your Tahoe, it's highly unsafe and likely to cause considerable problems. Stick to the recommended tire sizes listed in your owner's manual to ensure safe and reliable operation.
