Yes, PDK GT4 and C8 good options. I worry about build quality on the C8.

 

Thanks D Jones, and a hat tip to C&D, that was a well written article.

 

Agree on build quality.

 

718 GT4 is about 60 lbs heavier than a similar spec 981 GT4

 

In terms of braking distance, 718 GT4 vs 992 S, lighter car with bigger disks has worse braking performance... what did I miss?

70-0mph, GT4 148ft vs 992 S 141ft
100-0mph has similar readout

 

Interesting. However let’s not get so wound up about minuscule tenths on testing results. The GTS with PDK on same tires will absolutely be faster in 0-60 due to the amount of low end torque which is almost instantly available. I have a GTS PDK which I track on occasion. I purchased a separate wheel set to run Cup 2s on tracks because the 4S tires are atrocious on track...once they heat up even slightly they start to shred. Anyway, I have never been on track with a Gt4 on similar tires I couldn’t pull away from due to the massive torque difference. However, there are compromises with the GTS. The brakes are not as good. Plus the car really loses feedback as speeds get higher. But that’s because it’s a car made primarily for street, understandable as such. I usually track a GT3 or RS, so I am used to a much different sensation. Needless to say, I have a Gt4 ordered and can’t wait to take it out and have fun with it. Lap times and 0-60 are not the only measurement of a good car. I think the new GT4 will be a killer car that will combine best attributes of GT3 and 718, what’s not to like?

 

One possible reason, the 992 has bigger tires.

 

A rear engine configuration is ideal for braking in a straight line. The rear weight bias allows the rear tires to add more traction than mid or front engine.

Also, the GT4 tires need to be hot to have an advantage. The 992 would normally be outfitted with tires that offer traction over a wider temp range. Were the GT4 tires at optimal temperatures for this test?

"Bigger disks" are insignificant in a single 60-0 run. Their function is to reduce brake fade after multiple hard braking runs like what occurs hot lapping a race track.

 

C8 is a vile looking automobile. Capable, I'm sure, but it looks like one of those kit cars where someone tried to take a Fiero and turn it into a Ferrari. It's hard to do supercar tinged styling and I think GM is proving they don't have the design chops to pull this off yet. That photo posted somewhere of the 981 GT4 sandwiched in between the C8's just makes it look even worse.

 

C8 Z51 looks like a cut rate F430 or Modena. I think the Grand Sport / Z06 version will be much better as it probably won't look so disproportionate. Did you see this? https://www.thedrive.com/news/32981/...rior-stitching (classic)

 

Thanks for posting. Whats interesting is the pdk car they tested weighs 102 lb more and has slightly lower lateral G on the skidpad than the manual despite being basically the same spec as the manual they tested (buckets/ceramics/no bose/black bixenons). When you negate the launch benefits theres not much difference with the manual despite the longer gears and absence of no lift shift. If anything the manual pulls slightly at high speed possibly due to weight and drivetrain losses despite a minor tq disadvantage at the flywheel. Its gonna be interesting to see how this dragy thread unfolds in terms of what people actually see on the street. No doubt at the strip the pdk car would be 2 car lengths ahead (maybe a bus length) due to the better LC. But on a highway pull theres not much in it, despite the differences in ratios.

 

Just posted this in another thread. Dragy time for my PDK GTS 4.0. 3.3 seconds looks realistic with 1ft rollout.