The "Texas Mile" - Mercedes Benz SLK Forum

AMGs For those high performance Mercedes-Benz R170-SLK 32/R171-SLK 55/R172-SLK 55 cars tuned by AMG -

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#1 Old 10-22-2013
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The "Texas Mile"

Anxious to see how our little AMG competes in this weekend's Texas Mile! A straight one mile dash to the finish line! Some competitors belong to the 200 mph club! I'm hoping for 150!
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#2 Old 10-22-2013
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Good luck & be safe.....
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#3 Old 10-22-2013
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haven't taken mine past the century mark yet… be careful...


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"You may all got to hell, and I will go to Texas" Davy Crockett
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#4 Old 10-22-2013
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Well you are no stranger to speed with a Z06 and an SRT-8. Have fun and looking forward to hearing the outcome.

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#5 Old 10-22-2013
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Good luck and be safe! Curious to see how the R172 SLK55 performs. Any mods on it? Does it have the performance package?

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#6 Old 10-23-2013
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No mods, but it does have the performance package!
When I look at the history of the Texas Mile, most cars go about 20% faster in the mile, than they do in the 1/4 mile. So 150 mph may not be achievable, but we will see!
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#7 Old 10-27-2013
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The AMG did very well at the Texas Mile! I've attached the time slip which shows both the half mile speed and the full mile speed.
I expected it to run in the mid 140's, and was very pleasantly surprised at my best run (which occurred twice) of 158.2 mph. The weather was muggy, and we had a headwind both days. The heat and headwinds really took their toll in the afternoons and speeds consistently dropped to 155 mph. I made all the runs in sport/sport mode with one run in sport/manual. Using the manual mode produced identical times as sport mode.

The SLK surprised a lot of folks with it's near 160 runs! I was proud of it!
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#8 Old 10-28-2013
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You are a brave soul. I can not even imagine driving the car that fast... 150+mph? That is fast.... The fastest I have ever done is 120mph and even then, it was a very short burst and I quickly slowed down... No need to get the cops interested in me...

BTW, were the runs timed? How long did it take to get to 1/2-mile and 1-mile?
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#9 Old 10-28-2013
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I've had mine up to about 135 mph (I say 'about', because I was on a track and didn't get a lot of time to look down at the speedo) and never felt anything but in control in this car - AMG's really are designed to perform at those types of speed. On the other hand, in far West Texas, the spped limit on I-10 is 80 mph, and when I'm heading out there in my truck for deer hunting season, I feel like going even 85 mph is really taking a risk (as far as the handling is concerned). OTOH, In the SLK, I feel very confident to cruise at 85 with nary a care in the world.

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#10 Old 10-28-2013
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Congratulations are in order.
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#11 Old 10-28-2013
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The events were not timed, but the mile took about 33 seconds... don't know what the time was at the 1/2 mile. My friends in their ZR-1 Corvettes were in the low 180's through the mile. The ones in the Z-06 Corvettes were in the mid 170's. The ones in late model stock Mustangs were in the low 150's... just for reference points....
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#12 Old 03-07-2014
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Hi TT-
Even though the photo is top down, did you put it up for the runs?
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#13 Old 03-08-2014
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Yes, top up for all runs (track rules).

We go back to the Texas Mile in two weeks (March 21st). This time I'm running my 2014 Camaro S/S 1LE. Having a lot of fun kidding my wife about how my Camaro is sure to go faster than her "little" AMG.

I'll have fun while I can, because there is no way on earth the Camaro will match the 158.2 mph run the AMG made!

Having fun!
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#14 Old 03-08-2014
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Originally Posted by thompstl1 View Post
Yes, top up for all runs (track rules).

We go back to the Texas Mile in two weeks (March 21st). This time I'm running my 2014 Camaro S/S 1LE. Having a lot of fun kidding my wife about how my Camaro is sure to go faster than her "little" AMG.

I'll have fun while I can, because there is no way on earth the Camaro will match the 158.2 mph run the AMG made!

Having fun!
Why do you not think it will hit around that or more? Isn't a 1-mile top-speed run mainly hp and aerodynamics (and partly gearing)? I don't know one way or the other about aerodynamics, but the 1LE has the hp covered.
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#15 Old 03-09-2014
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Bumpa2,
Here are some of the important numbers for a mile long race;
AMG = 417 hp/weight 3,583/drag coefficient 0.31/frontal area 22.7 sq.ft
Camaro = 426hp/weight 3,860/drag coefficient 0.35/frontal area 24 sq.ft

The numbers would say the AMG has the definite advantage, higher horsepower to weight ratio, less drag, and not pushing as much headwind. Of course, it could be cooler in March (Camaro) than it was last October (AMG). We had a strong headwind the entire weekend when we raced the AMG... I can always pray for a tailwind with the Camaro!!! However, all other things being equal, the AMG should do better than the Camaro.
That being said, maybe I'll get a tune and CAI on my Chevy! Can't have the wife outrunning me too bad!!!
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