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Originally Posted by RidingOnRailz
So how does all that relate to the tables and explanations I shared?
Like I recently stated, at our place we keep our cars in our "standard operating environment" - our driveway! Plus or minus 100feet(33m) variation in local altitudes. So bi-weekly predawn pressure checks - and adjustments if necessary - are the norm here, and our shops have exclaimed accordingly: "Very even wear for 3-5 year old tires!"
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As I explained, it is very common in scientific circles to reference STP (Standard Temperature and Pressure - 0°C, 100 kPa = 32°F, 14.7 psi) for testing purposes. Every experimental result is adjusted back to those conditions so they can be compared to other test results.
For tires, STP isn't used or referenced - however many people are used to the idea of a reference temperature and pressure, so they try to apply it EVERYWHERE - even when it isn't appropriate - and that is the case with the tables you referenced.
Quote:
Originally Posted by RidingOnRailz
Are you kidding?
I can see different wear pattern(more shoulder wear) on the front tires of my Honda Accord, and on the fronts of other front-drivers I've owned.
Same as with my rear-wheel drivers from ages ago - my Chevelle and Buick Century
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The problem here is that some alignment settings will result in uneven wear patterns rather than even wear. For a reason I don't quite understand, many vehicle manufacturers specify lots of camber - and when coupled with a bit of toe, the result is one-sided wear and/or diagonal wear.
Then there is the issue of how a vehicle is used. Vehicles that do a lot of city driving will experience more shoulder wear. So even though the front tires on a FWD SHOULD wear evenly, both the actual alignment and how the vehicle is used will impact evenness of wear. One way to put it is: Your mileage may vary.