CRex

Just had two back-to-back weekends at our home track, first racing a 991 Cup then really pushing a 1RS. It was amazing how much the two cars resemble each other:

First off, the 1 Cup:
- Easy to drive with prodigious front grip vs. the 7
- Much, much more forgiving chassis; can take throttle some ways earlier
- Fantastic brakes... Modulation requires slightly more pressure during a turn
- Not as much steering feel (despite running a hydraulic setup from the 7R); lighter touch overall

The surprise is when I jumped into the 1RS the following weekend:
- Driving feel is more than halfway to a cup, in ALL respects
- Steering surprisingly not any worse, despite being fully electric
- Grip... OMG this is a street 911 on Cup2s... Really? Front axle is... unimpeachable.
- Braking mega mega. Initially set my brake points same as the Cup and found myself 20 meters early in most cases. The wonders of a well-tuned ABS...
- The run to redline is PRIMAL. Absolutely up there with 7 & 1 Cups in terms of body experience
- I did not miss a manual shift one bit. Car is so out there that an H-pattern will only be a liability (surprised I'm saying that myself)
- With all systems on the car is doing more driving than the driver. It's subtle but you know it's doing a little nip and tuck here mid- and late-corner... 4WS seems to have a bit of lag--one seems to feel the rear coming in esp in slow corners

Overall it's shocking how the 1RS delivers more than half the cup experience, all the while demanding so little of the driver. I honestly don't know if that's a good thing. This car turns village idiots into Schumachers...

I'll end on the note that I think the 1RS will be rather pointless on the street. Below 6k rpm it's boring like a C2S. Only with ***** out mentalist driving does it show its true colors... And just how many of us can do that in street use?

bronson7

Enjoyed reading your comparisons.

997rs4.0

Thanks for write up. Been looking forward to back to back 1cup vs RS.
Really curious if a turbo RS will make it better or worse. Always felt that the 997.2rs was better suited to the 997 chassi and gear box than the 997gt2rs.

The 991 chassi and PDK can probably handle the boost better than the 997.

-eztrader-

great write up - thx

mooty

thx for great review

- I did not miss a manual shift one bit. Car is so out there that an H-pattern will only be a liability (surprised I'm saying that myself)
===> i knew you come to your sense ;-)

silverrules

Thanks for the review. Is the RS brake same as GT3?

Zulu Alpha

Yeah, identical. In both iron and PCCB

rm21

Thanks for the great review. Although the brakes are the same in the RS and GT3 when I drove them back to back on the track I was surprised by the better braking in the RS. I think the bigger contact patch on the tires is helping.

CRex

You were almost prescient on this issue...

DrJupeman

I believe this as I found the braking on my GT3 limited by the front tires. More downforce on the front coupled with bigger front tires should make the RS brake better than the run-o-the-mill GT3.

Mika911

A friend with very in-depth knowledge of the cars mentioned the RS has a brake booster which the GT3 does not. Can anyone confirm this?

fxz

"Below 6k rpm it's boring "

It s better to tune ECU and exhaust
at the cost of mpg and emissions

Damn boring Lady regulators

Nizer

Yes, but different than Cup.

Challenge

RSRRacer

Sounds like you had a great time!

But if you were seeing shorter braking distances in the street car, then something is amiss with the 991 cup. Maybe bad tires, alignment, or bias.

Brakes are not at all thesame between the two cars.

991 cup uses a Performance Friction caliper and much different pads.

991 cup can brake much later than the street car.

CRex

This is most intriguing... My Cup braking points are roughly consistent with the pros running the regional Carrera Cup, max 5m earlier... Bias is a small tad to the front (0.25 on the dash equiv to 5 bars delta)...

I'll need to reconcile the differences...

Braking distances for me:

7Cup > 7.2RS similar to 1Cup > 1RS...

Admittedly the rear of the 1RS is squirmish under hard braking. Can safely bet that for track use it'll need an LSD in no time...