Accelerator, definitely. With the 300TDT (with a mostly non-functional turbo) you basically throw the hammer down if you're not standing on the brakes. If I don't remind myself of that when I jump into the 300M I hear very audible tire friction. It's rare when I press more than 1/4 of the way down. Of course Chrysler designed it that way -- their research before the LH platform hit the market was that people considered them slow despite outperforming the competition on 0-60 times and 1/4 mile. Turns out they people in the surveys were basing their perceptions on only using half of the pedal travel. Consequently, 1/2 of the pedal travel now is nearly full open acceleration!
The only way to hear audible tire friction in the tractor is if I take a corner too quickly.