Serious discussion guys....

[Ryan81]

I just love testing all the cars in Forza 4 on the Sedona 1 mile drag strip and for the most part, I think the cars' acceleration, launch etc is pretty darn close to reality. However, some 1 mile times have me scratching my head and thinking "Really? Such and such a car would really beat that one, would it?"

Example: an Audi RS4 '06 is quicker than a BMW M5 E60 '09 by about .7 of a second. The RS4 posts a 31.6 time and the M5 posts a 32.3 time.

Ok, I understand the reason is because the Audi has AWD and so theoretically has a better launch than the RWD BM. However, since their 0-60 times are pretty much identical (4.6/4.7 seconds) and with the BM having a higher top speed and more hp, surely once both cars pass 60, the edge would go to the M5? Or am I wrong?

Yes, I realise that in order to get a better launch with RWD cars, sometimes you have to experiment but there's no way I can get it to beat the RS4. I've tried it dozens of times in slightly different ways and 32.3 is the max. Would this be true in reality do you think?

 

[zr1chris]

Here is a video that you may find interesting.



If you notice, they start from a roll and the M5 doesn't start pulling away until about 240kpm. That being said I think it would be fairly close considering the RS4 will get off the line much quicker and seems a bit more snappy at lower speeds. It all depends on how big of a lead the RS4 has by the time it reaches 240kph. You should get someone to race you side by side so you can see exactly how big of a lead the Audi takes at the beginning.

I would but i'm at work.

 

[Ryan81]

Thanks, Chris.

Interesting vid (look and sound like guys who do something illegal for a living lol) I mean, really, it looks like some poor Eastern European country and they are young blokes driving RS4s and M5s. Something fishy....

Anyway, the vid shows that the Audi could be a little faster at low speeds because as you said, the M5 doesn't start to overtake until about 240kph which is around 150mph. So, that being true, I suppose it's possible that the M5 wouldn't pass the RS4 before they reached the 1 mile mark.
I reckon the M5 launches to 60 in Forza from a standstill in around 4.7-4.8 and the RS4 probably does it in around 4.4-4.5.

 

[TheCanuck]

Weight plays a part too. The RS4 weighs 3600lbs or so, the M5 is a hair over 4000.

400lbs is a lot to lug around, even with 80 more hp.

 

[ShylockHolmes]

Depends on how much $ the manufacturer sends T10's way. Think it was coincidence there were Audi's all over the leaderboards of FM3 as well as on the cover as well as in Greenawalt's driveway? Nowadays he drives a bmw....hmmm....

 

[UKMikey]

He must have a lot of Dodge Dart Hemis and Super Bees in his garage then.

 

[zr1chris]

Depends on how much $ the manufacturer sends T10's way. Think it was coincidence there were Audi's all over the leaderboards of FM3 as well as on the cover as well as in Greenawalt's driveway? Nowadays he drives a bmw....hmmm....

...and the BMW lost to the Audi in the OP's test results. So what's your point?

 

[VXR]

The M5's gearing might also be longer-legged than the Audi.

 

[zr1chris]

The M5's gearing might also be longer-legged than the Audi.

That's almost a guarantee given the video I posted.

 

[ShylockHolmes]

...and the BMW lost to the Audi in the OP's test results. So what's your point?

I made it pretty clear.

 

[Terronium-12]

Depends on how much $ the manufacturer sends T10's way. Think it was coincidence there were Audi's all over the leaderboards of FM3 as well as on the cover as well as in Greenawalt's driveway? Nowadays he drives a bmw....hmmm....

Do you have any formidable evidence to support this theory of sorts?

 

[zr1chris]

I made it pretty clear.

Your explanation would leave me to believe that the BMW should have been faster in FM4 since Dan G owns one. That's not the case according to the OP's test.

 

[local chap]

I think the most simple explanation is, it's a video game, and a second or so difference isn't that unrealistic?

 

[I'm Motarded]

I reckon the M5 launches to 60 in Forza from a standstill in around 4.7-4.8 and the RS4 probably does it in around 4.4-4.5.

Slipping the clutch on launch could probably split that difference, maybe more. The BMW being RWD you won't get the fastest launch with the way the computer auto-dumps the clutch, it makes it really difficult to get traction off the line.

Disregard this post if you are already slipping the clutch.

 

[Ryan81]

I don't use manual w/clutch, only manual. Besides, the launch stats are clearly better for the Audi so even if you timed it perfectly, the BMW will never get the same (or better) launch from standstill. There is always a degree of wheelspin, even if it is minor and that makes the difference in the end.

 

[I'm Motarded]

Forza Stats are just a guide. The wheelspin issues is the whole reason I suggested slipping the clutch. You won't get an accurate representation of the cars launch if you are using an assist aka manual without clutch.

You asked for possible reasons why the cars are not matching their real world counterparts, yet discount my suggestion without bothering to test it. Try matching two cars with the same drivetrain and seeing if they equal your real world expectations. Using the same drivetrain should eliminate the differences in launch technique.

If you do want to try getting a proper launch with the M5, switch the controller layout to 4. I think. The clutch will be on the left trigger, you won't need a brake, you are only going in a straight line.

 

[Ryan81]

Ok, I'll try doing it with the clutch. When you say 'slip the clutch' what do you mean by that? I drive a manual car in real life but I'm not familiar with that term.

 

[imported_JJ72]

As in ease off the clutch according to traction available, you can have the engine in power range without wheelspin if you ease the clutch off.

 

[zr1chris]

Ok, I'll try doing it with the clutch. When you say 'slip the clutch' what do you mean by that? I drive a manual car in real life but I'm not familiar with that term.

Are you using a controller or a wheel? Reason I ask is, it will be pretty much impossible to slip the clutch using a button on the controller.

 

[I'm Motarded]

Are you using a controller or a wheel? Reason I ask is, it will be pretty much impossible to slip the clutch using a button on the controller.

Not impossible. See my post above.

To the OP. To clutch slip watch this video. But use the highest revs possible start at say 5000rpm and let the clutch out as fast as you can but with as little wheelspin as possible. You can add more Rpms once/if you master it


http://youtu.be/CIZbPWK_uOk

Not the best video regarding racing starts but it's the best I could find. Obviously you won't need to mirror/signal/maneuver

Oh, and the correct controller layout is #12 or #10

 

[zr1chris]

Not impossible. See my post above.

Ahh, I didn't think of moving the clutch to the left trigger. Good idea since you don't need the brake for drag racing.

 

[Ryan81]

Not sure where to change the controller layout but anyway, I tried using manual with clutch and now I know what you mean by 'slipping the clutch' but I wasn't able to get a faster time. In fact, it was about .2 of a seconder slower on the 1 mile drag than when I used manual only.
Even if I don't go mad near the beginning by redlining the rev limiter, I still get a degree of wheelspin. Can't be helped. If anyone can beat the RS4 with an E60 M5 on the 1 mile drag, hats off to them. I certainly can't and have tried just about everything. Guess it could mean that the RS4 is a bit quicker than the M5 in the lower gears.

 

[zr1chris]

Using the clutch should never be slower. Are you lifting off the throttle between shifts? If you are then don't. Gas should stay at 100% the entire time after you gain initial traction.

 

[Ryan81]

Using the clutch should never be slower. Are you lifting off the throttle between shifts? If you are then don't. Gas should stay at 100% the entire time after you gain initial traction.

Fair enough, Chris. But I'm sure the RS4 will beat the M5, regardless. Tell you what, try doing a 1 mile drag race with the E60 and tell me what's the best you can do. Mine is 32.3.

 

[zr1chris]

Fair enough, Chris. But I'm sure the RS4 will beat the M5, regardless. Tell you what, try doing a 1 mile drag race with the E60 and tell me what's the best you can do. Mine is 32.3.

Most likely correct since you were most likely driving both cars equally.

If I get my console back up and running tonight I may give this a test and see if my results differ from yours at all.

 

[GTMail]

Have you ever thought that the M5 got the 4.7 0-60 with launch control? I know the E60s have them.

 

[zr1chris]

Have you ever thought that the M5 got the 4.7 0-60 with launch control? I know the E60s have them.

Very good point. 👍

 

[ShylockHolmes]

Do you have any formidable evidence to support this theory of sorts?

Cash payments to MS and Audi on cover, all over leaderboards and Greenawalts driveway (for FM3)

 

[zr1chris]

Cash payments to MS and Audi on cover, all over leaderboards and Greenawalts driveway (for FM3)

What does that have to do with FM4?

 

[GTMail]

Cash payments to MS and Audi on cover, all over leaderboards and Greenawalts driveway (for FM3)

We don't need some dumb conspiracy theory and if what your saying makes sense(It doesn't at all) then the BMW would spank the Audi because it is on the cover of the LCE and Greenwalt has one.