These days they use air ratchets for everything- too lazy to grab a torque wrench. Bolt was probably stripped when it was put back on after the last oil change.
2011.5 LeMans Blue e92 DCT, ZCP, European Delivery. Black Edition Grilles, No Keyhole or Reflectors, Rear Fogs Enabled, Encore Innovation Exhaust, LUX Angel Eyes, 255x285's. "Last of the V-8 Interceptors, a real piece of history..."