Mr. Adair

Love it. I've seen his videos. Is his car the car Pobst did the laps in?

Manifold

People I know who track Porsche GT cars generally spend less than $10k in mods, mainly just setup plus safety things like roll bar and harnesses. If someone is looking to spend a lot more than that, then I think maybe they bought the wrong car, and maybe should be tracking a race car (not street legal). An older BMW converted to a race car and running on slicks will harass the Porsche GT cars at a fraction of the cost. For me, the whole point of a Porsche GT car is supposed to be that it's good for both track and road right off the showroom floor with the street tires.

Manifold

I think these two videos (same driver) capture how great and how frustrating the 4RS can be, depending mainly on where the 4RS is driven and how it's driven. Go to 28:45 in the second video.

ipse dixit

Define mods?

Just a set of wheels/tires and maybe brakes will easily run you over 10k.

That's not even including driving lessons, which I consider the most important "mod".

lovetoturn

Yes. My rear bar is full soft and the front is full stiff with the 110 Nm front springs and 9.5 inch front wheels. It is a different car with those additions. It took me multiple adjustments to slowly get there one bolt whole at a time (four), but that is what it took to balance the car. I have zero doubt that Randy could have saved another second on his lap time if he could have leaned more on the rear end instead of having to counter steer to keep the car balanced.

Manifold

Tires are consumables, not mods. Wheels are needed to attach the tires to the car, not a mod. Brake pads and rotors are consumables. Some people upgrade brakes in Porsche GT cars, but the factory brakes are good, so brake upgrades don't make much difference.

Mods increase power or downforce, or improve the suspension.

Setup isn't really a mod, it's tuning.

Driving lessons are obviously not a car mod ...

mrd_spy

factory brakes are ****, wheels are mods , new wheels= new tyres so a mod as most people have 2 full sets of wheels/tyres, as are brakes, as the cars untrackable at any serious speeds oem.

most serious track dayers buy new wheels, tyres, brakes, geo plus extra top mounts, etc and then if you buy shocks that lot is over £20k and these people don't want to trailer a race car at 60mph for 1k miles.

The Manthey Kit is £54k on the 4RS as an example. If you are not spending money you are not serious or even thinking about lap times and doing more than 2 track days a year. you are then imo a VIP or badge buyer and have the car for the wrong reasons.

£10k is nothing in Porsche land, that's a lot on a VW Golf, but not on a GT car.

renn.tp

Some intense discourse. Really think it’s as simple as the GT3 is more capable, but the 4RS is still an incredibly adept track car - especially with a few supporting mods. End debate?

Manifold

So much wrong here ...

Eric5280

They came out a couple months ago saying later examples had a different result: https://www.evo.co.uk/porsche/cayman/gt4/rs

Pretty good article that addresses the review you posted. Many I've given rides to have expected the car to be louder and harsher than it is and that is their first comments.

The worst I experienced was on a concrete highway section with many expansion joints for an hour or more cruising at 80 which is nearly 4k rpm. That was very uncomfortable, but aside from that, mine is quite civilized on roads and most of the 8 hour drive home was good. I did decibel readings in my GT4 I drove out to trade and the 4RS coming back. Both were mid 70's cruising on same sections of road.

Unsure if there is a part changed in dampers. Either way, the car is very stiff and loud overall, but as expected for an RS product to me.

mrd_spy

badge buyers say that I find :-)

TDT

Discourse is the purpose of the forum... good that there any so many varying opinions... means we can all learn something.

VRShader

it is a forum, the point is to debate. So I am gonna keep it going lol.

people keep saying GT3 is a more capable car, but I see stock 4RS perform equal or better than stock GT3 on various tracks…

It is a more technically advanced car, doesn’t mean it is more capable than 4RS’s plain old physics.

Visceral

As someone who's had both, that feels very much down to drivers and alignments. There are a few very good drivers that are not concerned with the "character" of the back end and are willing to drive a GT4RS 10/10ths. In that case with a proper track alignment, there may be some situations where it's a coin flip which is faster.

The GT3 does not require a very special driver to get within a few tenths of it's theoretical best lap (assuming the same tires)- it is less sensitive to driver and alignment.

If a great driver with few risk concerns shows up and the 4RS has the better alignment (like perhaps the C&D Lightning Lap), then sure... the 4RS might run a better time.

A typical track day leaves all the variables bright and obvious. I've been passed by Miatas and E30s while driving a GT3, and I've passed lots of GT3 and GT3RSs in a Toyota GR86. It's amazing what a brand new fresh set of tires will do on the first session out.

Manifold

4RS accelerates just as strongly at track rpms as GT3, maybe stronger.

I think 4RS has less drag, so an advantage on straights?

4RS doesn't have as good a suspension, doesn't have RWS, has narrower tracks, and less downforce (?), but it's mid-engine and longer wheelbase, so maybe about the same cornering capability?

I think the bottom line is that no GT3 driver should be confident they won't get passed by a 4RS. The capability of the car on track is about the same. The choice between the cars should really be about which one someone finds is more fun to drive. I got both of them to have some variety.