I don't believe that higher dosages of tramadol would lead to precipitated withdrawal. Precipitated withdrawal only happens when you're using traditional full or partial agonist opioids. Even in doses of 1200mg, tramadol didn't give me any problems when starting bupe. I did also find that if I already had bupe in my system, and then were to use heroin and then use bupe again like 8-12hrs later, I wouldn't have any precipitated withdrawal from the heroin. If I was high on heroin, even if I already had bupe in my system, reintroducing it during the heroin high would probably created some precip withdrawal.