* Negative Camber: This is the most common culprit. Negative camber means the top of the tire leans inward. This causes the inside edge of the tire to contact the road more aggressively, leading to faster wear. This can be due to:
* Worn suspension components: Ball joints, control arm bushings, tie rod ends, and other suspension parts wear out over time. When they do, they can alter the camber angle.
* Bent suspension components: A collision, even a minor one, can bend suspension parts, affecting the camber.
* Improper alignment: A simple misalignment during a tire rotation or other service can cause this.
* Toe-in/Toe-out: While less likely to cause *only* inner wear, excessive toe-in (wheels pointing towards each other) can contribute. This would likely also cause uneven wear on the outer edges, but a combination of negative camber and toe-in can worsen inner wear.
* Incorrect tire pressure: While underinflation typically causes more center wear, significantly underinflated tires *can* contribute to inner wear, especially if combined with other alignment issues.
* Heavy loads: Consistently carrying heavy loads in the Tahoe can stress the suspension and exacerbate existing alignment problems, leading to faster inner wear.
* Driving habits: Aggressive cornering can put extra stress on the tires and suspension, but it's less likely to cause *only* inner wear unless combined with other factors.
What to do:
You need to have your Chevy Tahoe's alignment checked by a qualified mechanic or tire shop. They'll use specialized equipment to measure the camber, toe, and caster angles. They can then identify the specific problem and replace or repair the faulty suspension components to correct the alignment. Ignoring this will lead to premature tire wear, poor handling, and potentially unsafe driving conditions.
