Yeah, the rear-wheel drive cars can be a handful in DiRT Rally 2.0, even more so than in the original DiRT Rally. They really nailed the throttle modulation aspect in 2.0, so you want to be careful how much you are on the throttle sliding through corners and how soon you get back on the power when straightening out. Some RWD cars are easier to get to grips with than others, the Stratos can be easier to spin due to it’s mid-engine design and how much power it can output.
I found that the Renault Alpine A110 1600 S happens to be a good car to start out with in the H2 RWD category. The engine is located in the back over the rear axle, helping keep weight located over the rear wheels to assist with tyre grip levels. What it might lack for in straight up performance numbers like BHP against its class competitors it makes up for in the weight savings, rear-engine design, and its handling\maneuverability characteristics. Which kind of apes the real life history of the car in rallies, it might not have been the most powerful in terms of BHP but it sure made up for it in other areas.