24Chromium

My Cup car weighs in at 2613 lbs.

Thanks, buddy! I love making them LOL

hf1

24C, are you faster in your 7cup or in your 991 gt3? By how much?

996FLT6

The 7 cup Lar in hands of a pro probably in the 1:48 range at th. Lar is getting there. Think his best time is 1:51. Mike

24Chromium

I have yet to make an apples to apples comparison. When I did track my street car (only once so far) I really yearned for the Cup. However, it is very fast in a straight line.

My personal best lap time in the track configuration on the video is 1:52.4 (I was only a tenth slower last weekend). Compare that to the best time posted by the 991s, 1:57.8, and I'm substantially faster. Having said that, the top speed, gearing and tires on the 991 are simply astonishing. By comparison, my personal best in my 997.2 RS (stock except for slicks) was 1:57.5 on the same configuration.

Manifold

I suspect that putting slicks on the 1 GT3 would close most of the gap to the 7 cup. But then you're going at 7 GT3 pace without 7 GT3 safety ...

orthojoe

I think so too, but I don't plan on using slicks on mine. No need for me as I'm happy with trying to get the most out of the stock tires.

Manifold

Me too, plus big brother has the G-meter to check whether we've put stickier tires on the car, thus providing a basis to deny warranty coverage. Part of the reason I got the GT3 is because it's as fast as I'll ever need with street R-comp tires, so trailering and swapping tires isn't mandatory.

hf1

Curious to see how this works out with the camber. Looks like larger than -2.5 F/R camber is needed for even tire wear at the track (for >8/10 driving) but that seems too large for even wear on the street. Hopefully, there's a happy median to be found.

orthojoe

It depends on how much street driving you do. I'm running -2.8 up front and -2.4 rear on the spyder and my tires wear evenly. However, it's not a DD. If you drive the car on the weekends or the occasional fun street run, I don't it will be a problem. If it's a daily driver, then I think uneven wear will be a problem

I plan to run -2.7 all around on the GT3.

hf1

Yes, same situation with my 6gt3. Don't have my camber settings handy but they are equally, if not more aggressive. NT01s wear evenly on the track and I have Sumitomos for the country roads where I put enough side loads in the turns which evens out the wear. My gt3 spends 80% of its waking hours with decent side loads in turns, on and off the track.

K-A

Damn, that's some riveting driving.

24Chromium

I beg to differ. I don't think there is any way simply bolting on a set of slicks is going to gain you 5 seconds. The MPSC-2 is an unbelievably good tire. Quite amazing grip. My hunch is more like 2, maybe 3 seconds.

I'll be watching with great interest this season to see what folks can do with these amazing cars. Meanwhile... I'll be doing my damnedest to drop another 2 seconds myself in the Cup car!

Manifold

I've set up my track cars for the track, and that alignment has always worked out fine on the road since the tires experience far more wear on the track.

I'm estimating 3 - 4 s on a ~2:00 track. But there's another question: if the SC2 is that good, why isn't the lap time gap between the 991 GT3 and C2S larger than 2 - 3 s on a 1:30 to 2:00 track?

hf1

I have separate wheels+tires for the road & the track. The track tires cost more and wear out + heat-cycle out much faster so I'd be replacing them too often. They're too sticky for the road, anyway. Less sticky tires are more fun on the road.

996FLT6

Agree with Lar. Nope. Mike