So I lost a relatively new tire on my 04 AWD Sienna 175k pretty much the same drivetrain as the Highlander so hopefully this post is in the right spot. Replaced it with an identical tire (could not find a used tire that matched and was safely repaired) but now I'm concerned about the 3/32 tread depth variance between tires. Internet search is yielding advice varying from its fine to its going to blow up the drive train. Recommended fix ranges from replacing the other tire on the axle to all three tires need to match the new one as far as depth goes. The vehicle has been cared for and I'd like to run it for another 75-100k.