So true! It's miles too strong, and it doesn't matter what car you're in, they're all equally good to draft with.
In real life, even if you're in a small car behind a huge truck on the highway, there's barely any drafting power at all, unless you're really close behind.
In GT5P on the other hand, you can be in an ordinary low powered car 40-50 yards behind a slightly faster car, you're actually able to catch up with and overtake it! Toooooo unrealistic...
If PD doesn't make anything about this, stock car racing in GT5 will feel really wierd.
I saw in another thread that you mentioned NASCAR 2003. Do you have that sim? If so you know exacly how PD should model the draft. rFactor takes into account vehicle shapes when it models how the draft affects the cars.
As for the current unrealistic draft, it would kill the oval racing
In oval racing the gap from lets say first to second in speed may be .2 per lap
On a road course race the gap may be .2 as well, but an average lap on a roadcourse is around 90 seconds, whereas on most ovals the average lap time is 40 seconds (NASCAR oval laptimes range from 15 - 55 seconds)
After 30 minutes of racing on a roadcourse that averages 90 seconds a lap being .2 faster a lap the gap from first to second would become 4 seconds
After 30 minutes of racing on an oval that averages 40 seconds a lap being .2 faster the gap would be 9 seconds
What this means is that oval racing is a game of tenths and hundredths of a second and over a large amount of short laps that gap can become very large. If you have an unrealistic draft evaporate that .1 a driver beats another driver through a corner then the racing becomes well, stupid. This is also a problem on road courses in GT, but it is worst on ovals because of the long straightaways and constant high speeds.
That does not mean that the draft means nothing in NASCAR. It means alot at the restrictor plate tracks because of the low powered engines powering the boxy cars at high speeds which makes air resistance crucial, but at smaller tracks a driver .2 faster a lap can pull away from a following driver using his draft. As noted in the video I posted the lead car receives a draft boost as well as the trailing car.
I cannot state the following enough. A good handling car that drives well on worn tires is far more important to winning in NASCAR then using the draft. (outside of Daytona and Talladega). Hopefully PD recognizes this and implements proper physics for the car and the draft
So in recap, whoever has the best handling car wins 95% of NASCAR races on ovals, not who made that last lap move using the draft. Hopefully PD models the tire wear for the cars correctly.
In NASCAR tire wear is the opposite of most racing series. You go slower as the run goes on, not faster.
The current Gran Turismo tire model, or at least the GT4 tire model, has the tires "warming up" and getting faster and faster for the first lets say 75% of their lifespan, only to start slowing down and degrading the last 25%.
In NASCAR you're second lap is slower then your first lap, your 3rd lap is slower then your 2nd lap, and so on. It's very different and hopefully PD models it correctly