I think the best test is to drive it for a day to be honest as id soon be able to tell which was quicker as i do upto 1500 miles a month in my phase 1 going round the same roads and twisties daily, so to me thats the only true way you get to know a car, fair enough we could both go down to an indutrial estate and nail them from a standing start but then it could always come down to the better driver :rasp:
I want to pinch his car for a day and then i'll say which is quicker - although i'm quite aware that my bro is not to fond of my driving style at some times:clown: