Go the series you are racing then click results, here you will see the results for thw recent races then click on R which is splits.
Top split is the fastest guys or you can click on the other splits if you like generally look at your irating and compare it to the splits average irating. When you selected the split you can then see their qualifying times, race average lap times and If you click on a driver you can see their laptimes for each lap of the race. I normally look at the top 5 drivers of each split to see what race lap times they are doing