Warning on R compound tire
#1
Racer
Thread Starter
Warning on R compound tire
FYI to all
I was just warned by Porsche that installing R compound tires will void factory warranty.
While down at Sebring, Bob Woodman was suggesting the Trofeo R since we're so limited in 20" profile (and and we all know the R888 absolutely STINK).
I had him throw a set on the trailer, but never had the need to change the OEM out (since I was broken down half the time).
I recall reading in the owner's manual somewhere this same warning (albeit, reading owners manual compels a Porsche owner to turn one's "guy card" in). Dealer went out of way to be specific, knowing how much I track.
I was just warned by Porsche that installing R compound tires will void factory warranty.
While down at Sebring, Bob Woodman was suggesting the Trofeo R since we're so limited in 20" profile (and and we all know the R888 absolutely STINK).
I had him throw a set on the trailer, but never had the need to change the OEM out (since I was broken down half the time).
I recall reading in the owner's manual somewhere this same warning (albeit, reading owners manual compels a Porsche owner to turn one's "guy card" in). Dealer went out of way to be specific, knowing how much I track.
#4
FYI to all
I was just warned by Porsche that installing R compound tires will void factory warranty.
While down at Sebring, Bob Woodman was suggesting the Trofeo R since we're so limited in 20" profile (and and we all know the R888 absolutely STINK).
I had him throw a set on the trailer, but never had the need to change the OEM out (since I was broken down half the time).
I recall reading in the owner's manual somewhere this same warning (albeit, reading owners manual compels a Porsche owner to turn one's "guy card" in). Dealer went out of way to be specific, knowing how much I track.
I was just warned by Porsche that installing R compound tires will void factory warranty.
While down at Sebring, Bob Woodman was suggesting the Trofeo R since we're so limited in 20" profile (and and we all know the R888 absolutely STINK).
I had him throw a set on the trailer, but never had the need to change the OEM out (since I was broken down half the time).
I recall reading in the owner's manual somewhere this same warning (albeit, reading owners manual compels a Porsche owner to turn one's "guy card" in). Dealer went out of way to be specific, knowing how much I track.
#5
Interesting. What portion of the warranty did they say would be voided?
Doesn't the manual state 'slicks'? If so, then you dealer is equating all R comps to be slicks? I've always interpreted this to mean real racing slicks and not R comps.
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Also, the lines b/t various performance tires seem to be smeared. For example, Tire Rack lists the MPSC variants along with the Dunlop Sport Maxx Race as 'streetable track and competition,' a category that includes the Pirelli Pzero corsa, while the trofeo is lumped in with hoosiers.
It's going to get mighty confusing what can and cannot be run on the 991.
So I guess if you run on track with sticky rubber, you better make sure you swap out your non MPSCs and non Sport Maxx's before going in for service.
Doesn't the manual state 'slicks'? If so, then you dealer is equating all R comps to be slicks? I've always interpreted this to mean real racing slicks and not R comps.
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Also, the lines b/t various performance tires seem to be smeared. For example, Tire Rack lists the MPSC variants along with the Dunlop Sport Maxx Race as 'streetable track and competition,' a category that includes the Pirelli Pzero corsa, while the trofeo is lumped in with hoosiers.
It's going to get mighty confusing what can and cannot be run on the 991.
So I guess if you run on track with sticky rubber, you better make sure you swap out your non MPSCs and non Sport Maxx's before going in for service.
#6
I'm not so sure about your info. I've got a 991 C2S, and the manual only makes mention of slicks, nothing about r-comps. I've run Trofeo R on my car and have had service done on my car with no issues whatsoever.
Given that the PSC2 are standard on the car and are R-comps, it would be pretty odd for Porsche to say that they would void the warranty.
Given that the PSC2 are standard on the car and are R-comps, it would be pretty odd for Porsche to say that they would void the warranty.
#7
Rennlist Member
Your warranty can not be "voided" by using a DOT approved street tire in stock sizes. The Trofeo R is a DOT approved street tire.
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#9
Racer
Thread Starter
#10
Rennlist Member
The Sport Cup 2 is a basically an R-compound. Actually, it's better than a lot of R-compounds in grip and overall handling characteristics. Just guessing and I'm not a P-car owner, but I thought they said slicks (i.e true Pirelli, Dunlop, Michelin race slicks) weren't allowed. R-comp shouldn't be an issue.
I would guess the Sport Cup 2 has better grip overall than the Trofeo R.
I would guess the Sport Cup 2 has better grip overall than the Trofeo R.
#11
Racer
Thread Starter
The Sport Cup 2 is a basically an R-compound. Actually, it's better than a lot of R-compounds in grip and overall handling characteristics. Just guessing and I'm not a P-car owner, but I thought they said slicks (i.e true Pirelli, Dunlop, Michelin race slicks) weren't allowed. R-comp shouldn't be an issue.
I would guess the Sport Cup 2 has better grip overall than the Trofeo R.
I would guess the Sport Cup 2 has better grip overall than the Trofeo R.
Being that my GT3 is down and at the dealer, I was given a specific text warning me about R compounds? What everyone w/ much more knowledge than me states, all make great sense.
I've challenged my dealer now, given what all of you have written and have asked them to confirm. They said they'll get back to me by tomorrow.
Will let you all know.
#13
Nordschleife Master
Would be really interesting if your dealer has some information regarding as to why Porsche is specific about the use of slicks...
#14
Sounds good.
There are threads a while back that specifically warned against "Slicks". I suspect (hope) your dealer got this wrong, and the ban is on true slicks. But still, there are some mighty sticky Dot R tires out there, like hoosiers and goodyear RS.
I think PAG will have trouble defining what is and what is not a slick. Kind of like trying to define ****.
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I don't think anybody knows. Lots of conjecture. Many pointing to RWS but with no basis.
There are threads a while back that specifically warned against "Slicks". I suspect (hope) your dealer got this wrong, and the ban is on true slicks. But still, there are some mighty sticky Dot R tires out there, like hoosiers and goodyear RS.
I think PAG will have trouble defining what is and what is not a slick. Kind of like trying to define ****.
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I don't think anybody knows. Lots of conjecture. Many pointing to RWS but with no basis.
#15
Rennlist Member
Your dealer has it wrong. I had this conversation with PAG. The MPSC2 is considered a Dot rated R compound by the tyre manufacturers. Trofeo is fine. Their blanket cover statement is "slicks". There is a big difference between a hoosier slick and a MPSC2. Maybe 2 seconds on a short course and at these elevated levels that's probably applying a 20% increase in inertia forces on the drive-train and chassis. All the while I was talking tyres I got the distinct impression the statement in the book was written for USA customers due to fear of litigation....