Maxpontiac, I don't quite get where you are going with a lot of what you are saying.
Which GTO are you referring to in Forza 4? There are 3 GTOs. There is the older '65 (D-297), the '69 Judge (D-314) and the '06 GTO (B-440).
The '65 on racing tires goes to C-409 and you have at least 16 more 'performance points' to add to the car to keep it maxed at C on racing slicks.
The '69 Judge on racing tires goes to C-421. Not much play room as 425 is the C max limit.
The 2006 model, which I think is the one you are referring to, starts off as a B-440 car. Upgrading to racing tires on it brings it up to an A-504 class. Even in stock trim on default tires at B-440, this car will never be a C class car. So I don't get why you think it ever would be one and it seems you are arguing over nothing really. I don't think a Prius would be able to outperform a Ferrari 458 on any given day so I wouldn't expect to be able to severely downgrade a 2006 GTO that starts at the mid point of the B class when there is no option to detune, add restrictors, or downgrade a car in the game. Racing tires alone bring this car up to a low A class car.
Your displeasure over the class designations for Forza and praise for GT is not justified at all. Both are ranges the developers put in to create some type of classification. GT had to get this PP system patched in so that's actually worse. These numbers and numbers/letters are just an easier way for us to target a certain build but I have raced with friends where we built a car and it happened to be a number nowhere near the max limit of a letter grade, for example 486 falls under A class but isn't max A class and as that build best represented one of the player's cars we left it as is as a spec and went off to race.
What I would love for the next Forza to have is more tire compounds aside from just stock/street/sport/race. I would like them to do something like GT5 does and have more ranges of grip within each of these tire classes so that as an example we the players can define the stickiest grip tires to be solely for qualifiers and then whatever compound we want for the actual race. Most players will still aim for the stickiest tire as it gives the best grip, but if FM5 brings back endurance races (proper ones) then grip could be calculated in giving us the option do we get for a RS or a RH as grip is close but wear is superior on the RH. Even the drag tires I'd like to see full blown racing slicks as well as a street legal DOT tire suitable for drag. Why not?!
What I'd like from GT6 is something that Forza has, with tire pressure adjustments, wheel diameter and width, better tire model so that we fiddle around with things. A BBS LM wheel does NOT weigh the same as a stock heavy cast wheel so it shouldn't be just a visual upgrade but also a performance related one aside from tire grip by choosing a better tire compound. Anyone who has ever driven a stock car on crappy stock tires from like a 14-15" cast wheel and went with a wider but lighter forged 17-18" wheel and great tires can tell you how much better performance you get.
