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MT930's Avatar
 
Join Date: Jul 2007
Location: Southwest Montana
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Michelin Sport Cup Pressures on the 930

I am running MPSC I Love em But I have not strayed much pressure wise from what the PO was using, seems to work great.

What are your experiences with pressures running these tires ?

235/40/18 Front
295/30/18 Rear

I have been sticking to these pressures
Street cold
26 Front
28 Rear

Track
28 Front
30 Rear
The tires are on the last 20% or their life.
I Have almost 2,800 Miles on these since I bought the car. I have fallen in love with the tires. They are not cheap, I bought a replacement set. I want some honest opinions.
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1987 930 - Gone but not forgotten
A man with priorities so far out of whack doesn't deserve such a fine automobile.
I would rather wake up in the middle of nowhere than in any city on earth - Steve McQueen
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Old 05-13-2008, 08:56 PM
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What camber settings are you running?
Reason I ask is that I am wondering if this has alot to do with getting grip outta these tires too.
I have started a thread on this exact topic (pressures) already 2 weeks ago or so and have not gotten alot of solid responses indicating reliable answers one way or the other.
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1979 930 Turbo....3.4L, 7.5to1 comp, SC cams, B&B intercooler, Snow Perf water/meth injection, Rarlyl8 headers, Garret GTX turbo, 36mm ported intakes, Innovate Auxbox/LM-1, custom Manually Adjustable wastegate housing (0.8-1.1bar),--running 0.7bar max
---"When you're racing it's life! Anything else either before or after, is just waiting"
Old 05-14-2008, 07:22 AM
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Camber
-1.6 Front
-1.8 Rear
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MT 930
1987 930 - Gone but not forgotten
A man with priorities so far out of whack doesn't deserve such a fine automobile.
I would rather wake up in the middle of nowhere than in any city on earth - Steve McQueen
американский
Old 05-14-2008, 12:31 PM
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Anything? tips, Suggestions?
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MT 930
1987 930 - Gone but not forgotten
A man with priorities so far out of whack doesn't deserve such a fine automobile.
I would rather wake up in the middle of nowhere than in any city on earth - Steve McQueen
американский
Old 05-20-2008, 02:31 PM
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Does calling Tirerack help?
I tried and cannot seems to get an answer outta them either.
Anyone?
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1979 930 Turbo....3.4L, 7.5to1 comp, SC cams, B&B intercooler, Snow Perf water/meth injection, Rarlyl8 headers, Garret GTX turbo, 36mm ported intakes, Innovate Auxbox/LM-1, custom Manually Adjustable wastegate housing (0.8-1.1bar),--running 0.7bar max
---"When you're racing it's life! Anything else either before or after, is just waiting"
Old 05-20-2008, 02:33 PM
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Michelin owner's maunal is good info (Found on Tire Rack's Site). I was looking in to some Pelican Insight.
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MT 930
1987 930 - Gone but not forgotten
A man with priorities so far out of whack doesn't deserve such a fine automobile.
I would rather wake up in the middle of nowhere than in any city on earth - Steve McQueen
американский
Old 05-20-2008, 02:40 PM
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I've been going out with 30 / 32 and been coming in right at 36 / 38 after the session.
My 77 is only 2,635 lbs and will not heat the tires as quickly as the heavier cars.
(tires are mpsc 225/50, 245/45 on 16's)
I'm also still searching, and just bought a small pyrometer to try and zero-in on the numbers.
Bill K




Bill K
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Old 05-21-2008, 12:10 PM
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I asked much the same question recently and one person suggested 32 psi for the front and 42psi for the rears.... cold pressure..

Thats where I put them but I don't know if thats optimum for street driving.

I have Falcon Azensis 615 on mine, 225/40X18 up front, and 315/30X18 on the rear.
Old 05-21-2008, 01:35 PM
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Quote:
Originally Posted by bkreigsr View Post
I've been going out with 30 / 32 and been coming in right at 36 / 38 after the session.
My 77 is only 2,635 lbs and will not heat the tires as quickly as the heavier cars.
(tires are mpsc 225/50, 245/45 on 16's)
I'm also still searching, and just bought a small pyrometer to try and zero-in on the numbers.
Bill K




Bill K
You got the right approach, the only way to tell is with a pyrometer.
Let us know what you find out so we can get a ball park pressure that works.

Thanks,
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1979 930 Turbo....3.4L, 7.5to1 comp, SC cams, B&B intercooler, Snow Perf water/meth injection, Rarlyl8 headers, Garret GTX turbo, 36mm ported intakes, Innovate Auxbox/LM-1, custom Manually Adjustable wastegate housing (0.8-1.1bar),--running 0.7bar max
---"When you're racing it's life! Anything else either before or after, is just waiting"
Old 05-21-2008, 02:42 PM
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