I am confused.

I go to indys and I always get outer tire wear. I go to the dealer and it almost always is correct and long-lasting (no outer tire wear)

What do the dealers do that the indys don't (or don't know)?

This is very helpful.

Haasman

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'03 E320 Wagon-Sold
'95 E320 Wagon-Went to Ex
'93 190E 2.6-Wrecked
'91 300E-Went to Ex
'65 911 Coupe (#302580)