of bushings causing this problem. i suspect a bent or rusty rear a arm. i have had one of each. my lovely daughter #2 slid one of my 240s on ice into a curb. it put the wheel at a very interesting angle. a lighter hit might make it hard to see. .25 inches is not a lot but if it is indicative of a bent a arm it would result in the type of wear you are seeing, i think.

of course look at the bushings as bones suggested but if there is nothing to see there, i would look at the a arm.

tom w

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[SIGPIC] Diesel loving autocrossing grandpa Architect. 08 Dodge 3/4 ton with Cummins & six speed; I have had about 35 benzes. I have a 39 Studebaker Coupe Express pickup in which I have had installed a 617 turbo and a five speed manual.[SIGPIC]

..I also have a 427 Cobra replica with an aluminum chassis.