bone stock zr1 hits 10's!

[wolfdogs]

The short times are more believable when you remember the car has launch control, a specially designed suspension that senses tire spin and softens the rear suspension to allow the tires to plant and comes with specially designed tires that also allow for a better launch.

not to mention the drivers ...are the best out there... LOL

[DJ Taso]

Oh I didn't know you didn't see the video. They dont make anything but a street tire for the back of the ZR1's, 335/25-R20, afaik. He did say the track was prepped very well. They must have sprayed it with glue.

10.730 @ 132.46 mph stock on drag radials. After a few more passes that did not better the 10.85, we decided to put on Ranger’s 18” drag radials.

He stated that he used drag radials on his launches

[thomas]

actually the 09 doesnt have launch control. the 2010 has the lauch control.

[thomas]

He stated that he used drag radials on his launches

yeah, i was refering to the stock rim that you can see and didnt have DR on there. but yeah on the 10.7's they put 18in rim dr for that.

[Performin Norman]

actually the 09 doesnt have launch control. the 2010 has the lauch control.

But it still has the active suspension that softens the rear suspension upon tire spin and the specially designed tires. I've never seen this suspension on any other car.

[Performin Norman]

2009 Chevy Corvette ZR1 - The Once And Future King
Suspension
Exceeding 1 g of lateral grip is no small feat, but Chevrolet says the ZR1 will do it. How? The role of fat rubber in achieving this peak number can't be ignored, but a sophisticated suspension system allows the ZR1 to shine no matter what the road condition. Though it uses the same basic front/rear SLA setup of other Corvettes (albeit with tweaks like larger anti-roll bars), the big news is the ZR1's use of a retuned version of the Magnetic Selective Ride Control that is optional on base Vettes. Many readers are probably already familiar with this system: by using special fluid exposed to magnetic fields, the damping properties of its shock absorbers can be altered in only thousandths of a second. This allows the system to adapt to driver inputs and changing conditions of the road virtually instantaneously.

Recently upgraded to Gen II spec for the 2008 model year, the MR system (as the engineers call it) is considered by most a near-$2,000 luxury alternative to the Z51 performance package on base Vettes. But for the ZR1, it's been retuned to allow for a top-notch suspension good enough for a supercar--with a ride quality that, although not soft per se, is said to be significantly more compliant than that of a Z06 when set in "touring" mode. A good part of the latter has to do with the MR system enabling the engineers to soften the rates of the composite leaf springs: the front spring is that used in Z51 cars, and the rear uses a modified Z06 spring with a bit less material. "In the past, we engineers had to compromise between ride quality and the way the car handles on a racetrack," says Danahy. "But with the MR system, you get the best of both worlds, as its variable damping allows the system to be tuned both for the track and for the street. [Corvette Chief Engineer] Tom Wallace likes to say this is a good car for going to get bread and milk--and it is. It's really a nice car to drive on the street!"

Delivering the best possible amount of grip to the tires along with a smooth ride is great, but the ZR1 also features a new, previously untapped side benefit to the MR system that is probably of additional interest to GMHTP readers (many of whom are, shall we say, "drag-happy"). Anyone who has driven a stock C6 Z06 surely knows that car's amazing propensity for traction, even from a slow-speed throttle stab. The situation can quickly change on hopped-up cars with aftermarket turbo kits and the like, so it's no stretch to imagine the additional 130 lb-ft (give or take) of blower-induced twist that will be provided by the LS9 would roast meats of any width in similar fashion. The MR system provides one nice solution by automatically detecting a high rate of lift on the front of the car and kicking the damping of the shocks down to around 33 percent, allowing maximum weight transfer to the back tires. Damping rates can then be modulated up to around 90 percent to hold it there as the car begins to accelerate. "So basically it allows the car to sit, squat, and then go. It's like an electronic traction bar," says Danahy. "It works great and we didn't have to engineer any new hardware. We just changed some 0s and 1s!"

[Joe 1320]

That's got to be a blast to shoot out of the hole.

[Christopherrr]

Zr1s come stock with either PS2 or SportCups...can't recall. But both Michelins are super sticky in either form.

I'm a believer of that 1.7 60'.