New tires at 24,000????

[Hmmm2]

I took my H3 into the dealer today. My steering wheel was a little to the left .. just a little, so I thought, probably wheel alignment. I was told it was .. so they aligned it and rotated/balanced my tires. The tech said my two front tires had wear on them .. and wanted to replace them. I could not see any visible wear. He said if not today then sometime before another 3,000 miles. I have 24,000 on it now. WHAT?? Is this possible? I never felt any problem with wheel alignment, no pulling, nothing with the wheels. I don't off-road in my H3 .. just street driving. (I know, I know...) Has anyone here, with normal street driving, had to replace tires already at 24k?