The RX8 could handle not so good because it's weight distribution might not be even. Try getting it to 50/50 no matter how much weight you add up to 200KG.
I think the Audi could use some more HP/Less weight.
it's already at 50/50% as it is, no matter how much ballast. I don't like it with the weight. I refuse to change it. It's so good, right now. Nothing phases it. It doesn't understeer or oversteer expectedly. This is how I win; I'm the last guy to make a mistake. I can't even come close to winning, if my car oversteers. So, I'm happy with the Mazda, and, considering it's not the Ferrari, Dodge, or Chevy, which are, in my opinion, the cars to beat, I'd like to ask that everyone stop blaming me for using my car's advantages (consistency, even tire-wear, straight-line performance) to make me even with everyone else. I'm not ahead of the game. I'm not raising the bar. I'm at the bar, and I'm even with Storm, though he can force two more laps out of his tires. I couldn't make 9 laps at SSR5. I tried during qualifying. In the final corner, the tires blew-out or w/e and there was NO grip, and I spun. Storm made a 9 lap stint, without spinning. Damu made a 9 lap stint; and spun. So, the Viper's at the same pace, and can run a few feet longer on tires.
Is the Mazda the car to beat? No, I really don't think so. You guys don't want me to have an advantage, if we go to Indy, Daytona, or Monza, but, I didn't even win there, because of (admittedly) my temper. So, I should, at least, be able to hold my own, and not be told to run 65 more kg, and 5-10 less hp, considering that the Ferrari and Dodge are showing their hands as the faster, better cars.
I already have the 50/50% I need, to get even tire wear. The car's tire wear and handling are great as-is, because of the supple, easy-to-control suspension. I don't need or want to change it, though, because the Mazda's not fast. The Camaro is slower, now, because of the respec, which I never REALLY thought was necessary. At Monza, the Camaro did.. okay, I suppose, and the 'Ring probably came down to my d/c, and Paul's ability to better cope with the bumps (G27 wheel?)
Since then, I've gotten into Rally's rally series, and have my fill of AWD fun. 
