isv

While I definitely agree the 675 eats brakes (well all Mclarens ex P1 do), surely it's also a function of the fact it's a car with a ton of hp and relatively high weight.

The 991rs has been relatively easy on brakes because it's almost 200hp behind. the 2rs with 650-700hp will be a much better comparison of how the SGL coated rotors hold up compared to the brembo rotor as used on the Mclaren/Ferrrari. While I think the SGL rotor will last longer, it's also a heck of a lot more expensive so it'd better hold up much better too...

Drifting

Agree that brake use on the the GT2RS vs the 675LT/720S is a more fair comparison than GT3RS VS those same macs as the power and speeds will be fairly close of the GT2RS and the 675/720

However I disagree with the your comment above of high weight. The Mclarens due to their carbon tubs are by far the lightest cars we're talking about on this thread, so if they're still eating brakes compared to the GT2RS, then Mclaren has no excuse.

Apolo1

I actually prefer the peddle feel and modulation of the Lt brakes to that over the ones on the 91RS.

Problem with the LTs ones though is that they have no ceramic coating on them. As such it does not take to long for the bonding agent to become weak and brake down, this causes the CF to fracture, then the Pad becomes course. Having said this they do perform in line with the maker guidance for track miles usage....

My friends that track LTs a lot UK refer to them as " Chocolate Discs"....lol

TRAKCAR

LOL

I'm late to the GT2RS thread with the GT3RS spyshots and all...

Market cornered wouldn't pass FTC approval.

isv

Fair enough, I meant it's still a ~1400kg car (without driver) and that's not what I'd call a light car by any means. It's 100kg or so lighter than a 991 rs but it just means the RS is heavy!

TRAKCAR

Any production cars already selling with the "solid" rotors like Movit?

Apolo1

Think I am right in saying that the CCBDs on the 997GT2RS and 997,4.0RS held the world recorded for braking performance. That stood until the 918 came out.

isv

The P1 I believe. The akebono rotors seem to be continuous cf fibre rotors like surface transforms who make the movit rotors. The akebono P1 pads are staggeringly expensive though afaik.

Koenigsegg are using ST rotors as well I think. And probably the Aston Red Bull car will as ST are supposed to be involved with that.

Drifting

I'm not sure if you're older and so just thinking about cars from the 60s or something with no airbags or side impact protection, etc ??? The definition of a light sports car has changed with modern mandated safety equipment.

The 720S is 2829 pounds, and the 675LT a few pounds lighter, and both are two of the lightest sports cars in this century. The only street legal "sports cars" that are lighter than the Mclarens are little roadsters with tiny engines (less than 200hp) like the miata.

So if considering actual sports cars in this century, most of which weigh around 3500lbs or more, the Mclaren 675LT and 720S at just over 2800lbs are both very light.

isv

The 675 with fuel will be ~1390-1400kg fully fuelled in delivered customer spec. (2829lbs ie 1283kg for the 720 is for a dry weight). As I said, 100kg lighter than a 991RS or Speciale but not really 'light' imo.

I'd consider a exige v6 cup as a light car (1150kg with fuel) and yes I do realise there are very few cars that will fit my definition of a light sports car rather unfortunately....

Drifting

true the 2829 is a dry weight for the 720S, and you make a good point with the Lotus, as in many ways Lotus is the only true lightweight street legal sports car out there. However, Lotus cars are also rather underpowered. I don't really consider a car to be a sports car if it doesn't have at least 350hp.

I guess my concern is that you called the Mclaren "heavy" in a thread on the GT2RS, while we're comparing the GT2RS to the 488 and 720S, so by definition we are talking about cars with >650 horsepower. Engines that produce that much horsepower are always much heavier than the tiny engines in a Lotus. It's apples and oranges.

Not really fair to compare a 720S to a Lotus and then call the Mclaren heavy, when most Lotus cars have less than half the horsepower of the 720S. If you can put an engine producing over 650hp in a Lotus and still have a Lotus weighing less than 3000lbs, then you can start calling the Mclarens heavy.

TopspeedPT

MsGT3

Is there a reason why GT2's don't get .2 versions but GT3's do?

Nizer

Dig those rear facing cannons. Good for seeing off pesky Maccas and Fiats.

Now we know what the intake vents on the MKII 3RS look like. Question remains purpose...

Is just me or do the side sills looker deeper?

MaxLTV

Looks very aggressive. They should shoot fire on overrun!