Trying to find out what the average tire life is for the 397 GT cars. At a guess would 1 hr for the soft tire , 2 hrs for the medium and 3 hrs for the hard be a good rule of thumb at 1x tire wear rate? I realize that tire life can be largely affected by car setup and driving stile so just after an average. would a 1 hr race with a 2x tire wear rate, Suzuka for eg, softs with a pit stop vs mediums with no pit stop be a good balance? Can the softs make up for a 45 odd second pit stop and the mediums have enough pace and last to the end of the race?