Hard track use upgrades
MBWorld Fanatic!
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From: ATLANTA
R Nine T
[QUOTE=MG1422;7877335]Took the car out to COTA this weekend and finally got my track wheels and tried out the michelin slicks (S9A front S9M rear).
Car was 2-2.5 seconds faster with the new tires, keeping in mind the track itself has gotten slower and slower over the years.
Great times.
Any rear end links or sway bar modification?
Car was 2-2.5 seconds faster with the new tires, keeping in mind the track itself has gotten slower and slower over the years.
Great times.
Any rear end links or sway bar modification?
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Joined: Mar 2015
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fun ones.
Took the car out to COTA this weekend and finally got my track wheels and tried out the michelin slicks (S9A front S9M rear).
Car was 2-2.5 seconds faster with the new tires, keeping in mind the track itself has gotten slower and slower over the years.
I was doing 2.22 flat. Overall these tires were amazing and the grip was incredible although the second day you could tell the tires were not optimal anymore.
Car was 2-2.5 seconds faster with the new tires, keeping in mind the track itself has gotten slower and slower over the years.
I was doing 2.22 flat. Overall these tires were amazing and the grip was incredible although the second day you could tell the tires were not optimal anymore.
No real desire to run my car on slicks but its great to see others are. I have 4 days on track in the PRO over the coming 4 weeks, just hoping its not too wet!
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GTR
Senior Member
Joined: Jun 2018
Posts: 359
Likes: 152
GTR
[QUOTE=AMG 17GT;7877954]
No modifications on car other than Tikt Brake ducts, Girodics Rotors, Cobalt Pads, Alignment, Wheels and Tires
Took the car out to COTA this weekend and finally got my track wheels and tried out the michelin slicks (S9A front S9M rear).
Car was 2-2.5 seconds faster with the new tires, keeping in mind the track itself has gotten slower and slower over the years.
Great times.
Any rear end links or sway bar modification?
Car was 2-2.5 seconds faster with the new tires, keeping in mind the track itself has gotten slower and slower over the years.
Great times.
Any rear end links or sway bar modification?
Senior Member
Joined: Jun 2018
Posts: 359
Likes: 152
GTR
Mentioned before but will be keen to hear how the car holds up with these on especially as you clearly know what you're doing driving wise. These are worth 2-2.5 vs which tyre? I would expect a larger gain over the stock cup2.
No real desire to run my car on slicks but its great to see others are. I have 4 days on track in the PRO over the coming 4 weeks, just hoping its not too wet!
No real desire to run my car on slicks but its great to see others are. I have 4 days on track in the PRO over the coming 4 weeks, just hoping its not too wet!
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From: Overland Park, KS
‘24 BMW iX M60
So I find the MPSC2 ZP tyres; (the ROW option tyre), to be at least 2-3 seconds per lap faster than the OEM SC2s..
I would easily ‘guess’ that a set of Hoosier R7s on the car would be an additional 2-3 seconds/lap faster than the ZPs.
The Michelin slicks being 2-3 seconds/lap faster than the R7s means that the Michelin’s alone are probably worth about 6-9 seconds/lap quicker than the OEM SC2s.
Bish
I would easily ‘guess’ that a set of Hoosier R7s on the car would be an additional 2-3 seconds/lap faster than the ZPs.
The Michelin slicks being 2-3 seconds/lap faster than the R7s means that the Michelin’s alone are probably worth about 6-9 seconds/lap quicker than the OEM SC2s.
Bish
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GTR
So I find the MPSC2 ZP tyres; (the ROW option tyre), to be at least 2-3 seconds per lap faster than the OEM SC2s..
I would easily ‘guess’ that a set of Hoosier R7s on the car would be an additional 2-3 seconds/lap faster than the ZPs.
The Michelin slicks being 2-3 seconds/lap faster than the R7s means that the Michelin’s alone are probably worth about 6-9 seconds/lap quicker than the OEM SC2s.
Bish
I would easily ‘guess’ that a set of Hoosier R7s on the car would be an additional 2-3 seconds/lap faster than the ZPs.
The Michelin slicks being 2-3 seconds/lap faster than the R7s means that the Michelin’s alone are probably worth about 6-9 seconds/lap quicker than the OEM SC2s.
Bish
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fun ones.
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fun ones.
So I find the MPSC2 ZP tyres; (the ROW option tyre), to be at least 2-3 seconds per lap faster than the OEM SC2s..
I would easily ‘guess’ that a set of Hoosier R7s on the car would be an additional 2-3 seconds/lap faster than the ZPs.
The Michelin slicks being 2-3 seconds/lap faster than the R7s means that the Michelin’s alone are probably worth about 6-9 seconds/lap quicker than the OEM SC2s.
Bish
I would easily ‘guess’ that a set of Hoosier R7s on the car would be an additional 2-3 seconds/lap faster than the ZPs.
The Michelin slicks being 2-3 seconds/lap faster than the R7s means that the Michelin’s alone are probably worth about 6-9 seconds/lap quicker than the OEM SC2s.
Bish
All speculation anyway, I've never driven either tyre.
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2018 GTR and 2018 E63 Wagon
So I find the MPSC2 ZP tyres; (the ROW option tyre), to be at least 2-3 seconds per lap faster than the OEM SC2s..
I would easily ‘guess’ that a set of Hoosier R7s on the car would be an additional 2-3 seconds/lap faster than the ZPs.
The Michelin slicks being 2-3 seconds/lap faster than the R7s means that the Michelin’s alone are probably worth about 6-9 seconds/lap quicker than the OEM SC2s.
Bish
I would easily ‘guess’ that a set of Hoosier R7s on the car would be an additional 2-3 seconds/lap faster than the ZPs.
The Michelin slicks being 2-3 seconds/lap faster than the R7s means that the Michelin’s alone are probably worth about 6-9 seconds/lap quicker than the OEM SC2s.
Bish
The Michelin slicks were 3 seconds faster. No other variables. Same track, same car, same day, same driver, within 90 minutes apart.
The ZP's are an extremely fast street tire with a bogus treadwear rating, about the same as an R7 imo.
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GTR
I tested back to back brand new ZP's vs brand new Michelin slicks this weekend at http://arizonamotorsportspark.com/
The Michelin slicks were 3 seconds faster. No other variables. Same track, same car, same day, same driver, within 90 minutes apart.
The ZP's are an extremely fast street tire with a bogus treadwear rating, about the same as an R7 imo.
The Michelin slicks were 3 seconds faster. No other variables. Same track, same car, same day, same driver, within 90 minutes apart.
The ZP's are an extremely fast street tire with a bogus treadwear rating, about the same as an R7 imo.
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2018 GTR and 2018 E63 Wagon
To put in perspective how fast the ZP's are, when I ran the slicks Sunday I broke the longstanding Nasa TTU record by over .8 seconds. So the ZP's were withing 2.2 seconds of a nasa TTU record lap time. That's nuts.
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GTR
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From: Overland Park, KS
‘24 BMW iX M60
Has somebody tested back to back new Cup 2's vs new ZP's?
To put in perspective how fast the ZP's are, when I ran the slicks Sunday I broke the longstanding Nasa TTU record by over .8 seconds. So the ZP's were withing 2.2 seconds of a nasa TTU record lap time. That's nuts.
To put in perspective how fast the ZP's are, when I ran the slicks Sunday I broke the longstanding Nasa TTU record by over .8 seconds. So the ZP's were withing 2.2 seconds of a nasa TTU record lap time. That's nuts.
So I have extensive experience with both the ZPs and OEM SC2s with my car. The ZPs are easily 2-3 seconds/lap faster, and cure the baseline understeer that my car suffered from; (this was also helped by a more aggressive alignment). The car is far more confidence inspiring driving it fast on a road course with the ZPs.
That being said, the ZPs do come up to temp pretty fast; (I start leaning on them the second lap in higher ambient temps), and are good for about 3-4 laps. After that they are still a much better tyre than the SC2s, but they do lose some adhesion, so best to back off a little lest the rear end try and come around on you.
It sounds as if the ZPs might be almost as quick as a set of R7s, but doubtful they’d be as ‘sticky’ for as long as the Hoosiers.
I can get about two track weekends out of a new set of ZPs, although they are getting slower by that fourth day.
So assuming your best lap time, Mario could well be correct in that the Michelin slicks are worth 5-6 seconds/lap since the ZPs might well run close to the R7s.
Bish
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From: Edmonton, Alberta, Canada
Winnebago, Yugo
I think this is why they added the Gurney Flap.
On the regular GTR with the wing fully adjusted, it did cut down on the already very limited rear view.
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2018 GTR and 2018 E63 Wagon
Yeah, even with the 685whp, the car would actually still be a TT1 car because it's so heavy, one class DOWN from TTU where I ran it. I run a big power Viper in Nasa in TTU, but that car doesn't pass sound limit at this track, so I needed the points in my class so chose to run a class up, and it still broke the record!
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From: Austin, TX
1997 SL600, 2017 AMG GTS
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AMG GT
I also got the Intercooler meshes fitted per the MB retrofit, free of charge by the dealer. It’s great they offer these free OE fixes/improvements for these cars.
Last edited by Pete De La Mare; Oct 16, 2019 at 03:16 PM.
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2023 E450 Cabriolet, 2019 F150 Platinum, 2014 Dodge Challenger R/T
Ok so that was fun............. and the 3 others i watched after lol
Funny how the GTR looked so much smoother than the GT3 video that popped up after...
Funny how the GTR looked so much smoother than the GT3 video that popped up after...
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fun ones.
Here is a video of James Vance, IMSA TCR driver doing a 2.19 flat at COTA.
https://www.youtube.com/watch?v=yvLhqPxecBM
https://www.youtube.com/watch?v=yvLhqPxecBM
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GTR
