210 in traffic is good. Cars running r134 a/c run a little hotter than those running the old r12. I have one of each and have to keep reminding myself of this. But a/c aside, 200 -210 in traffic is average. Even 220 with the appropriate lcoolant mixture is okay. I have had a streetrod run as hot as 240 - 250 with no damage. The electric fan circuitry failed and the only cool air I could get was go fast air. Would not want to repeat that experience, and glad the engine was not of the aluminum variety.