The article I read about the ACR said that they put a sticker over the threads on the suspension, so if you adjust it the sticker will tear and they will void your warranty.

 

The suspension is adjustable for ride height, compression, and rebound. The warranty only states that improper tuning or modification of the system will not be covered under warranty. Most all car manufacturers use this vague terminology. Here is a pdf of the ACR manual:

http://www.kansascityvca.com/ACR_Owners_Manual.pdf

Adjustment of the wing will void warranty associated with problems resulting from the adjustments. Check out the warranty page towards the end.

 

What's up with the driver missing gears a bunch of times in the vid? I'm sure a better driver could've gotten an even better time.

 

never would of thought a dodge viper would break that record.

 

Hardcore racecar/supercar is very different that a supercar that is street friendly. You can always take any regular car and turn it into a racecar and deliver some great track numbers, but great #'s do not make a supercar. A supercar is a car that can do almost everything, and yet be comfortable/civilized and have some luxury aspect to it. The Viper ACR is a racecar with street tires, which requires some skill to drive fast. Not in the same category as the GTR, Ferrari, Lambo, and so on.

 

are you kidding me??

The "viper acr hardcore", a race prepped 600hp track beast, is only 2% faster around Nurburgring than a stock GTR?????????????? That's a disgrace and the viper should be ended before 2011.

 

Sarcasm I hope. If not, that's pretty funny.
The 911 GT3 RS posted a time of 7.47 (4% slower than the GTR). Better cancel production on that. Pagani Zonda Clubsport 7.27 (only 0.4% faster than the GTR). Halt production on that too. Lotus Exige S 8.25. I don't even think I'll grace that one with a calculation. Oh, no.....the GTR V-Spec posted 7.25 (only 0.8% faster than the regular GTR). Better never produce that car. Let's cancel production on all those supercars (Veyron, etc.) that posted slower times than the GTR. Obviously they are a waste of money. I love the GTR, but come on. By the way, the GTR was tested for weeks, if not months, on the Ring. The Ring testing influenced the cars final design. It was almost made for success at the Ring. The ACR (already a final product) was sent to the Ring for half a day and posted these numbers within the first 10 or fewer runs. The gearing isn't even optimal for the Ring, which is obvious from the video. You can see that it was easier for the driver to let it bounce off the limiter vs. time needed to shift on many occasions. The ACR is not the best car out there, but it's a damn good one.
James

 

The ACR is a pure race car from what i have read and seen. Not even remotely a street car. The ZR1 is mostly a fast street car. Viper wanted to try and best corvette. They did this time but no where close to the C6R corvette which would mop the floor with the ACR. Vipers are worthless if you ask me. Good runners but fall apart like my buddy's.

 

Like a few people have been saying compare oranges to oranges. Not apples to oranges.

 

Please read through the entire thread. I believe that the only person(s) to compare the Viper to anything else where the ones trying to play down its performance. I only extended the terrible logic that one person used to show how silly they were being. So many people love to put down vehicles when they do well. It's sad.
James

 

I don't believe that the Corvette C6R is a vehicle that you can drive down to the local dealership and order for next year. I also don't believe that it would have a warranty if you did buy one. Not street legal either, is it? As bare bones as the ACR is, it is still a production vehicle that you or I can own for a fair price. And if you are going to say it is not a street car, then you should say the same for all Vipers since it is just a Viper coupe with some aftermarket tweaks that you or I could buy for any car, including an Evo, and drive it on the street or at the track.
James

 

Bold = good points that i didnt know.

As for the rest, the other cars listed (IMO) are too different for a proper comparison.

The ACR weights less and make a **** load more power and is nearly race spec weak. Even the v-spec isn't as hardcore.

That being said, i'm obviously the one missing something here. How can all these cars be within such a close time frame? Put them on a traditional race circuit and
I can almost promise you the gaps will be a much greater %. Are there any results from other tracks on these cars?

 

that car flat out moves

 

I'll still take the GTR over the Viper

 

The reason I listed those particular cars is because they all claim to be stripped down track-day cars. Even the regular Lotus Exige has no carpeting. Just check out pictures of the interior of the Lotus and of the interior of the ACR and tell me which you think is the stripped down racer. The GTR V-spec is rumored to have no back seat and the radio delete also. The GT3 RS may have a slightly higher luxury feel inside than the ACR, but it should for the price (150K and up).

Vipers have always been touted as no frills road eating machines. Like I have said, the interior of the ACR and regular coupe is exactly the same unless you opt for the "hardcore" option. Remember, this is just an option on the ACR and only saves you 40 lbs. You could stick a KW suspension, lightweight wheels, Michelin Cup tires, a functional rear wing and front splitter, and a better braking system on just about any car and not be called a "true race car". The great thing about the ACR is that the manufacturer did all of this and put a ton of money into testing and making everything work together as a great package. And, you keep your warranty. What do you give up vs. a regular Viper coupe? A little harsher ride and that's it. Like I have also said, the ACR is the safer Viper to drive in any situation. Nobody should drive any Viper in the rain or snow, ever! But on dry pavement, the ACR will stick to the pavement much better than any other Viper, either in the corners or flat out in a straight line. Vipers have always been know for being tail happy, and the ACR solves some of that. It will never be confused with a luxury car, but then again, neither will an Evo IX.

Don't get me wrong. I love the GTR and would spend money on one if they were selling for MSRP. I refuse to pay over MSRP for any vehicle. The GTR has many advantages over the ACR: backseat, more luxury items, able to drive at speed in the rain or snow, very forgiving of novice drivers. I just decided to spend money on the ACR because of its performance numbers, ease of service/modification, and very limited production. I have also always loved the Viper looks even though I always used to think of them as straight line only machines. The ACR completely changed my opinion of the Viper. Just look at the numbers in so many comparison articles. Car and Drivers ACR, GTR, GT2, Z06 comparison. Road and Tracks 4 track comparison. Motor Trends Best handling car in America comparison. The ACR was not the top choice in these comparisons, but it always put down the best numbers and came in second to a Lamborghini Gallardo (at 2 and 1/2 times the price) in the R&T comparison. Not the best car for everyone, but it's the one I want.