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  #13  
Old 07-06-2011, 02:56 PM
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Re: SRT8 and Run Flat Tires

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Originally Posted by SRTDogg View Post
Yes mjw, you (will) have both, please let us know as soon as you are able to (but of course AFTER you have a few joy rides in your new WK8 though)!
No, I won't have both but I have a 2011 Overland today and the spare tire cavity is identical to the one you'll have on the SRT8. I was just suggesting that I would see if my 20" Overland wheel/tire combo fits under the cover so people know they have an option down the road.
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  #14  
Old 07-06-2011, 03:05 PM
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Re: SRT8 and Run Flat Tires

Oh I'm sure a stock wheel/tire won't fit under there regardless of wheel size.

So you are trading UP on the Overland, not keeping both?? Someone on here had the best idea which is get an Overland for Winter and an SRT8 for Summer. I tried to get my wife to get the Overland recently but she was insistant on a 4Runner (has been for 10 years) so it was time to get that this go around.
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  #15  
Old 07-06-2011, 03:05 PM
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Re: SRT8 and Run Flat Tires

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Originally Posted by P-Dawger View Post
Sorry but not sure I get the issue with run flats.

Your first line of defense is a cell phone - which you always have.

Never had an issue with run flats.

The harder shoulder....yeah we want that....it's a performance vehicle.

Sorry but the weight shed - not just the tire but all the bs that goes with it to change it....lots of weight savings there.

I don't have run flats on my 911 - but I don't have a spare either, no chance any wheel that fits in the trunk will fit over Big Red's.

Never had an issue - and I drive with racing tires on the street ;-)

So I guess I just don't get the issue with run flats...I like em.
The issue is that every single run flat put on a performance vehicle up to this point has caused a degradation in performance vs. a proper high performance tire. Go scan a few vette boards to see if anyone there likes runflats. And I don't think the Vette example is "early" generation.

Oh, and the last time I checked Porsche's haven't come with spares for a number of years but I don't think there's an "N" spec runflat anywhere to be found. Some people just don't want to give up any last ounce of performance in the name of compromise and runflats ARE a compromise. Hard sidewalls are just one factor in the way a tire performs and it's a huge leap to equate the sidewall construction of a runflat with high performance. if it was a better design every top end performance tire would have it.

Don't get me wrong, I could care less about a spare, I'm just saying there are other alternatives to run flats such as sealant and a small compressor such as what comes with a new Porsche.
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  #16  
Old 07-06-2011, 03:27 PM
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Re: SRT8 and Run Flat Tires

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Originally Posted by mjw930 View Post
The issue is that every single run flat put on a performance vehicle up to this point has caused a degradation in performance vs. a proper high performance tire. Go scan a few vette boards to see if anyone there likes runflats. And I don't think the Vette example is "early" generation.

Oh, and the last time I checked Porsche's haven't come with spares for a number of years but I don't think there's an "N" spec runflat anywhere to be found. Some people just don't want to give up any last ounce of performance in the name of compromise and runflats ARE a compromise. Hard sidewalls are just one factor in the way a tire performs and it's a huge leap to equate the sidewall construction of a runflat with high performance. if it was a better design every top end performance tire would have it.

Don't get me wrong, I could care less about a spare, I'm just saying there are other alternatives to run flats such as sealant and a small compressor such as what comes with a new Porsche.
Good discussion -

So I guess that is what I am trying to understand - what part of the tire causes a degredation of perfromance, my understanding was the compromise was ride qaulity due to the sidewall being to stiff, which is what I thought would increase performance? Is it compound, required pressure? Is the tread layup or ply different? Wear? I personally never had any issue with the Goodyear's on my 06 with about 30k on them before I got rid of it.

I have never bought into the whole N spec tire mystique...I have talked with a number of tire reps at the track, both Conti and Michelin and even Pirelli at the Rolex 24 and they basically boiled it down to a marketing ploy to be frank. The N just means it was the tire that was designed and developed for the Porsche or any other exotic....nothing more, as in no better performance given. It basically serves an all around purpose. No idea on the Corvette board what the deal is or with Goodyear I assume?

Anyway - I had the compressor in my 911 and it would barely blow up a floatie for the kids...worthless. And the tire goo, while mine did not come with that, I have read that that basically renders the tire unusable after. Don't know if it is possible to drive the 50 miles on a run flat at the reccomended speed, patch the tire and reuse?

In any event that begs the question should any high performance tires be repaired at all? So back to my cell phone for the flatbed to the nearest store with a new shoe for my ride.
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  #17  
Old 07-06-2011, 04:24 PM
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Re: SRT8 and Run Flat Tires

I don't necessarily "buy into" the N-Spec debate to the level others do but it's more than marketing. Porsche actually produces a specification the tire makers must meet to be selected an OEM and carry the N-Spec brand. They also test these tires for compliance, something not all manufactures do.

Some tire companies have 2 or 3 tires in the same size, one with the N spec, another with the Mercedes spec and a third with no manufacturers specification. They are all different, either in compound, construction or tread. It means something but it's not to the level where you will "degrade" or make the vehicle unsafe by not using them (unless you are in the UK or Germany where you are REQUIRED to use brand specific tires if available).

Personally, if a performance tire goes flat while in use it's my opinion the carcass has been damaged and I will throw it away. With that being said, if I were to ever drive on a runflat that was "flat" it would get tossed in the trash. That's why to me, flat fix or some other way to get me to a place to replace the damaged tire is fine since it's coming off and going in the trash anyway.

Being stiff enough to support a vehicle without air is different then being stiff under side loads and high slip angles. Hell, the RE-11 actually has different sideways inside vs. outside because of different load characteristics between the outer and inner surfaces. Am I saying it's not possible to create top rated performance tire that can also survive a run flat situation, no. It's just been my experience to date that the 2 have been mutually exclusive. Maybe these will change my mind, who knows????
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  #18  
Old 07-06-2011, 04:33 PM
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Re: SRT8 and Run Flat Tires

If you're gonna carry a full-sized spare, it had better be matched in diameter or your TC will freak out and get FUBAR'd.
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  #19  
Old 07-07-2011, 10:54 AM
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Re: SRT8 and Run Flat Tires

There is a real upside with run flats. Those valve stems with the air pressure sensors tend to become brittle and crack after a few years, especially on bad roads. (Your tire dealer can show you a box full of cracked valve stems). This has happened to me twice in 85,000 miles. Without run flats, you would be stranded at the side of the road faced with changing a tire. With run flats, you continue on to the next tire dealer and have it repaired while you wait in their comfortable waiting room.
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  #20  
Old 07-28-2011, 04:29 PM
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Re: SRT8 and Run Flat Tires

Apparently there will be a spare... http://www.facebook.com/driveSRT/posts/256048124406476
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  #21  
Old 07-29-2011, 06:00 PM
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Re: SRT8 and Run Flat Tires

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Apparently there will be a spare... http://www.facebook.com/driveSRT/posts/256048124406476
$50 says there is no spare. cmon... Usually when it comes to SRT "talk" or "questions" we know more than dealers, press, and "high" factory workers building them anyways. They cut the BOM by several hundred on each vehicle with the spare delete.
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Old 08-05-2011, 06:17 AM
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Re: SRT8 and Run Flat Tires

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Originally Posted by cyanideg View Post
$50 says there is no spare. cmon... Usually when it comes to SRT "talk" or "questions" we know more than dealers, press, and "high" factory workers building them anyways. They cut the BOM by several hundred on each vehicle with the spare delete.
Check out the official Jeep spec sheet, it lists a mini tire for a spare as standard.
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  #23  
Old 08-05-2011, 11:51 AM
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Re: SRT8 and Run Flat Tires

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Originally Posted by rusty104 View Post
Check out the official Jeep spec sheet, it lists a mini tire for a spare as standard.
Why though? There are runflats! Not that I like the runflats, but maybe Pirelli tires will last longer than the Goodyears.
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Old 08-05-2011, 12:29 PM
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Re: SRT8 and Run Flat Tires

I hope so,,,the goodyears has a tendency to wear on the inside of the fronts
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