bizzle said:
It wasn't anything more than a typo. I wrote it in inches and accidentally put "mm" but 1.59mm is roughly half of the 3mm tread depth he listed, which was what I actually wrote in the sentence so I'm not sure what you think you are correcting.
I'm correcting the fact that you put down "0.6 mm" when it should have been "0.06 inches." I never disputed the second part ("half of 3mm").
Speaking of which, I'm still waiting to hear from you about where YOU got that 0.06 inches/1.59 mm figure that you are quoting. You claim it comes from "the same links that people use to justify their position on this subject" but as I mentioned earlier I looked at those articles and found no specific tread depth differential mentioned. I'm not saying you're wrong, but if you're going to tell another poster he's wrong, at least back it up with sources that others can read for themselves.
You can argue and create all kinds of various scenarios to make your point valid, but the simple fact of the matter is when you go to rotate your tires the best ones are put on the front and the worn are put on the rear. I have never had a tire shop tell me that my tires differed by an amount too large to rotate and I doubt anyone has ever heard of that in reality (not in hypothetical-land). The only time this comes up is when someone opts to buy two new tires for some odd reason. It doesn't even factor when you have to replace *one* tire, which is a far more frequent occurrence.
Umm, that was the exactly the situation I was talking about: someone who only buys two tires, rather than replacing all four. Here's a quote of exactly what I said: "Some folks prefer to not rotate tires until the fronts are bald, in which the rears are swapped to the front and new tires put on the rear (for liability reasons, tire shops will always put new tires on the rear axle)." The links from Tire Rack and Discount Tire specifically addressed this situation.
One part I will concede was erroneous is where I said "tire shops will
always put new tires on the rear axle." But again I've provided links to two major tire retailers who said it's preferable to put the new tires on the rear axle. One of them said it's tire industry practice.
Just because it doesn't happen to you, doesn't mean it never happens. The results I linked to about people who had tire shops refuse to rotate excessively worn tires to the front axle came from Google. It's never happened to me, because I rotate my tires regularly, so they're all within 1/32 of each other by the time the car needs new treads. Except the time I did have to replace one tire once due to a blowout, and the tire shop put it on the back axle.