GrantG

What is the rationale for that?

DFW01TT

My understanding is that the louvres allow pressure to escape from the wheel wells in high speed driving, allowing the front end to feel more planted by reducing the lift caused by high pressure in the enclosed wells. It seems to be noticeable in high speed cornering.
Maybe someone with knowledge could weigh in.

GrantG

I mean what is the rationale for covering them? Reduce drag, prevent bottoming out from downforce, or what?

DFW01TT

Some have suggested that protecting the lap time of the GT3 might have come into play.
Beyond that, maybe Porsche will make their reason public.

GrantG

That doesn’t ring true to me. Plenty of ways to drive slower if that is the goal.

I’d say it’s more likely they taped the car to go faster, not slower.

cmc140

Do weather conditions, wind speed, ambient temp, track condition, and track temp get published with the lap times? Or do they wait for all of these to be in an acceptable range prior to shooting for the best lap time?
I'd venture to guess the external factors would contribute to some variation in times on an almost 13 mile track.

JCviggen

When I talked to Bergmeister about it he told me the GT4 RS gained more from Cup 2R than the GT3 did. But I don't remember exact numbers. I think GT3 was 6 seconds and GT4 RS about 8 seconds. If I'm wrong then it was probably 4 and 6 respectively.

The power is responsible for the biggest time gain. Then the tires. Then a modest bit from the aero and slightly lesser weight.

I like to believe that they tried a little harder to get the lap time out of the RS though.

Sharm

So 5-10 seconds (7 sec. Median from responses) from tires.
surpirsed no one feels the PDK itself is worth at least 5 seconds. I think it probably is on a long track like Nurburgring.
so more like 10-15 sec less than the 23: let’s say 10 seconds faster for the GT4 RS bridge to gantry? Seems much more realistic to me considering no change to front suspension (ie. not changed to double wishbone)

jmartpr

Lightspeed Wheels......

Westcoast

Also Augment Wheel Company, they make custom wheels in magnesium.

Zhao

Godwin's law Rennlist style Version 2022. Less heated than the old law of every thread will turn into a PDK or PCCB debate, but more interesting than the 2000ish snoozefest water/air cooling debate.

Il CP

Indeed. It might be as simple as the driver felt thar less front downforce was needed. Different tracks and different setups. The ring favours a slippery car after all.