Just won my first rivals thingy. It seemed hopeless at first, as the other driver was just a lot smoother than me and pulled ahead after every corner. I have no idea about tuning cars, but I tried upping the tyre pressure some and instantly gained 3 seconds and I'm not sure how I feel about that. I know tuning is a big part of the game and I suppose it's only right that they're included in challenges like these, but it felt like cheating as I sure as hell didn't win because I drove better.