From memory Lowndes did a 2:11 in the V8, with Button doing a 2:18. I can’t find the article where I read the times but it was something along the lines of that.
Did anyone catch Button’s interview on RPM? He was saying that if he was given more laps he feels that he could have gone flat out from The Cutting right up to the Esses.. That would have been insane to see.. The laptime surely would have been below 1:40
Certainly one could be lead to that conclusion. On the other hand I think Lowndes was going a lot harder in V8 than Jenson did with the F1. The McLaren probably ran a very high downforce level, which shouldn’t make it too hard for a professional race driver like Lowndes to get into it rather decently.