race7117

All this tells me is that I need to trade my Gt3RS on a GT2RS add the Manthey racing package and just be done it.........until the next generation comes out........and the next one......and

n d

the gt3rs was running on a damp wet track!

Gary(SF)

lol. Makes the car livelier feeling, just as McLaren intended. Huge rubber on the street is numbing.

Waxer

Lol. Sure professor. Thanks for your insightful contribution to this thread.

But spec wise I’m right. That’s all I have to say ‘bout that.

Waxer

Even more impressive. More tedium. Lol.

Waxer

I thought the 600lt was intended to be the track weapon the 570S never really was?

I like the Mac but it got out run despite its hp, tq and weight advantage.

Smoking Rotors

Steering feel vs grip

Off track, a narrow tire can give more feedback to the Batmobile right up to the limit.

gago1101

They initially ran on a wet track, but waited until the track was dry to post the final times. The weather was cool though.

Gary(SF)

Yes, it is, hence my post openly wondering why McLaren stayed with the 570S tire sizes on their track version. I still don't get it. All that said, I'm really surprised the 600LT wasn't closer to the 720S and faster than the 3RS.

zmangt3

With 325s in the rear i am betting it is. Its impressive what its able to run with small tires

ILLCOMM

The 3RS was on the Cup 2 R tire? The one that the 2RS Manthey was running during the recent Chris Harris review?

If so those tires are crazy, Heard from a respected person on this forum (who races and apparently talked to the folks that has input in the tire program for Porsche) that they last maybe 3 heat cycles. They definitely deliver the performance though!

And if Cup 2 R I would love to see the 3RS vs 600LT on OEM - Sport Cup 2 (non R) vs Trofeo R. Or even better yet, same tire on both!

360MVA

It is really hard to believe after driving both. Makes me wonder what other factors/conditions came into play.

gago1101

They tested weight and power.
Mclaren was 144lbs lighter and had 108 hp to the rear wheel advantage over the RS. Mclaren should have destroyed the RS with those numbers and its mid engine CF monocoque chassis.

Say what you want, the cup2 R tires may have an advantage over the Trofeo Rs, but the advantage is not huge. RS, and for that matter the regular GT3, are incredible cars. Not driven the same day, but the base GT3 with regular cup2s has a similar lap time to that of the Mclaren.

PS: Got to be honest though, I was really surprised with the time Randy posted in the 600LT. Could he have made a mistake doing the lap, or the Mclaren was not at its best? Doubt it is the former, as he would have said something.

zmangt3

Having driven both on the track these results don't make much sense. The 600's lap times are not far off the gt2rs

https://fastestlaps.com/comparisons/vgbcvvm44utu

cobrien

Seems like there are so many comparison threads like this, and yes they're interesting. However, unless it is same track, same driver, same tires, same day/same conditions, any numbers are meaningless. Different types of tires can easily cause many seconds of difference per lap. Heck, a brand new set of tires vs. a set of the same type with a few heat cycles and a bunch of laps on them can be good for many seconds per lap. Different drivers can obviously easily cause multiple seconds of difference per lap, even if all the drivers are experienced. Hot/cold, wet/dry, wind speed, wind direction, humidity, dusty track, green track, track temp...the list goes on and on. So looking at a list of lap times by different cars set at a given track, by different drivers, on different tires, on different days, tells you absolutely nothing. If there are many such tests done and results seem to be consistent, then maybe you can start to conclude some things about how car A and car B compare. But even then, you have to be careful if you don't know details of how the testing was done.