Unless I missed it, I think there's no way of checking your laptimes nor the ones of your opposition, othen than the best and last times. I think this is an important feature missing in this game. It helps checking your consistency. Do you guys have a workaround for this? Maybe using telemetry?
There is an app called second screen that allows you to see your record of laps if I am not mistaken. I don't remember if it does it for the opposition.