Both rear springs broke, I bought springs from the dealer and put it together. I removed the outer lower control arm bolt to swap the springs. I put it back together with the original bolts and torqued to 55 lb/ft based on the bolt size. I don't have a Bentley for this car, so I thought I'd ask you guys what the bolt torque is and whether I should replace these bolts? Are they single use stretch bolts? More generally, how the hell do you recognize if a bolt is single use? Sometimes the Bentley is wrong, I often find different answers doing internet searches and the dealers says either "I dunno" or "we always replace those" or "we always reuse those". Thanks.
Update. Called the dealer to see if bolt is single use. They said no, only the nut is single use because it is a locking nut.
Update. Called the dealer to see if bolt is single use. They said no, only the nut is single use because it is a locking nut.
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. Think I will go with a hybrid solution, use the old bolt and torque the new nut to 55 lb/ft.