I tried to rotate the tires on our 2006 XC90 V8 (alloy wheels) and just
about wore myself out and bent 3 screwdrivers trying to hammer the wheels
off the hub. What a nightmare.
Turns out they were corroded onto the hub between the alloy wheel hole in
the center, and the cast iron lip on the rotor. It's normally a very tight
fit anyway, and the salt water (and regular water) got between the two.
Evidently created a galvanic corrosion that caused such a tight fit it was
nearly impossible to remove the wheels. It took a lot of hammering with a
big screwdriver between the alloy wheel and the rotor (using the spaces
between the alloy wheel spokes to get access to the mating surfaces between
the alloy wheel and the cast iron rotor).
When I FINALLY got the wheels off (they VERY slowly loosened up), I scraped
off the corrosion on both the cast iron rotor lip and the inside surface of
the hole in the center of the alloy wheel. Then I applied a coating of
Permatex Anti-Seize grease so that the wheels will be easier to remove next
To me this is an outright Volvo design flaw. Essentially the assembly of
the two parts became a battery - two dissimilar metals (aluminum alloy rim
and cast iron rotor) and an electrolyte (water/salt water). All are a
recipe for tolerance-busting corrosion.
Anyone else encounter this problem? Does Volvo have a fix?