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PostPosted: Thu Sep 15, 2016 8:15 pm 
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Location: Carrollton, GA
Thanks everyone. I received feedback from Universal Tire that the 165/80/15 would not look great on 5.5's. More confusion. Geoff if you get time to post a picture on your car I would appreciate it. Mike, after years of "tricks" with this car, I hope to "treat" myself to some fall driving in the North Georgia Mountains by Halloween!
They are helpful at Coker but apparently the delivery date for the production run is not firm yet. At least that's the email I received this morning.

Bill, I saw where the Vredestein 175/70/15 is still available. This is the comparison results I found on tire website:
185/70-15 175/70-15 Difference
Diameter inches (mm) 25.2 (640) 24.65 (626) -0.55 (-14) -2.2%
Width inches (mm) 7.28 (185) 6.89 (175) -0.39 (-10) -5.4%
Circum. inches (mm) 79.16 (2010.62) 77.43 (1966.64) -1.73 (-43.98) -2.2%
Sidewall Height inches (mm) 5.1 (129.5) 4.82 (122.5) -0.28 (-7) -5.4%
Revolutions per mile (km) 800.42 (497.36) 818.32 (508.48) 17.9 (11.12) 2.2%


I'm sorry for not posting on the Tire sticky thread, but I'm really trying to nail down all necessary purchases now that we're getting close.

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PostPosted: Fri Sep 16, 2016 7:16 am 
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I just bought 165 CN36 Pirellis, they also have 185/70-15.

http://www.lucasclassictires.com/185-70 ... egoryId=-1

There are some errors on the tire size chart on this site, I posted a corrected version here:

viewtopic.php?f=1&t=27101&p=270160#p270160

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PostPosted: Fri Sep 16, 2016 12:57 pm 
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Don't forget that although the nominal size may be 165/80s actual sizes tend to vary between makes and given the relatively small difference between the two options......?....


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PostPosted: Sat Sep 17, 2016 2:49 pm 
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Location: Santa Monica, CA
The 165's on 5.5" rims will look fine. The sidewall is effectively shortened, so the ride will be slightly harsher. Usually when the sidewall is shortened (lower profile) the handling gets crisper. Not quite true in this case because there is still the same amount of rubber to squish.

The Pirelli CN36 tire is a great choice and now part of Porsche's official N-spec program. Available in both 165-80 and 185-70 sizes. By all reports it is nicer than the Sprint Classic, but more expensive.

Tire Rack is the official tire dealer for Porsche. I checked, and they are selling these N-spec CN36'ers. Lucas Tire is right down the street from me, and they are an excellent company.

Interestingly enough, there are 2 versions of the 185-70 CN36 tire in the marketplace right now: VR-rated (same as it ever was) and WR-rated (the new N-spec Porsche model). I am trying to learn if there are truly 2 versions or if it is just different labelling. Lucas Tire sells both.

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PostPosted: Mon Oct 10, 2016 12:14 am 
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Earlier I said I would report on my tire purchase. I've had the Nanking CX 668 tires on for several months now. Today our club drove some fast parade laps at a track that included some great tight curves and straightaways. The tires felt fine with plenty of grip. The drive to the track was at 70 mph for over an hour. I could not feel any vibration and they ran quiet. Good street performance as well. They are 165-80 on 5.5 rims and look just fine to me on the roadster. I went with the 165's to keep the original steering feel. The tread design looks good on older cars. Discount Tire ordered them for me and charged $58 each which included mounting and balance. They matched the best price I could find from online dealers. Just bring in a printout of the ad. It took me way too long to pull the trigger on a tire decision but i'm very satisfied with it.

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PostPosted: Mon Oct 10, 2016 12:53 am 
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Trond Vidar wrote:
Driving on tarmac with dirt or sand you can hear it being thrown into the wheelhouses, quite different to the older Dunlops I were running a few years ago. Only reason I can think of is that they are more sticky.


More likely the tread is what's different, and picking up debris, rather than the "stickiness" of the rubber.

Brian

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PostPosted: Thu Nov 10, 2016 2:14 pm 
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Abingdon Spares now carries Blockley radials, 165VR15, and excellent V rated radial, $129.95. abingdonspares.com


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PostPosted: Tue Mar 21, 2017 12:28 am 
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Does anybody have any feedback on the Pirelli CN36 tire? They were tough to find when they were first introduced but I've seen a few on the road. Maybe it might be early but is there any wear data? Performance data? They are quite expensive compared to other options. Are they worth the price?


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PostPosted: Tue Mar 21, 2017 3:25 am 
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Timothy Vick wrote:
Does anybody have any feedback on the Pirelli CN36 tire? They were tough to find when they were first introduced but I've seen a few on the road. Maybe it might be early but is there any wear data? Performance data? They are quite expensive compared to other options. Are they worth the price?


I have heard and read good things about them.

Auto Bild Klassik, a German magazine focusing on classic sports cars, ran a comparison test in July 2016 which included Pirelli CN36, Vredestein Sprint Classic, Blockley, and Michelin XWX. The CN36 tires came out on top fairly easily. The testing was thorough and evaluated several aspects of performance.

For me at least, wear data isn't so relevant because I don't drive my car that much. It's more likely that the tires get too old before they wear out.

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PostPosted: Sat Apr 01, 2017 11:18 pm 
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I just went down to Pirelli World in LA to take advantage of a $200 PCA rebate on a set of four tires. I was expecting a tire price around $225 each based on some past discussions. They are pricing the 165 size tires at $300. What price are you paying???


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PostPosted: Mon Apr 10, 2017 5:53 am 
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An update to this, if anyone cares. Pirelli has stopped making the 185 CN36 VR-rated tires. Only the Porsche N-spec version, WR-rated, is available now. Porsche and Pirelli say that it is no problem to have a VR-rated 165 in front and a WR-rated 185 in the rear.

There was a tire comparison test in a German enthusiast classic sports car magazine, Auto Bild Klassik, in the July 2016 issue. 4 tires were tested: Michelin XWX, Vredestein Sprint Classic, Pirelli CN36, and Blockley.

The Pirellis won easily, the Vredesteins were second, the Michelins fell down in wet testing, and the Blockleys were a distant fourth.

And a year later, my car is still not on the road. But soon ...

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PostPosted: Mon Apr 10, 2017 10:03 am 
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Ed - Once again, thank you for staying on this! My goal is to get a set of these on my car this summer. I'm sorry to hear your car is still not on the road. I haven't had my car out yet this year either -- we've been stuck in a rainy pattern here since October....

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PostPosted: Tue Apr 11, 2017 10:54 pm 
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Pirelli World in LA is pricing the Pirelli CN36 165 size tire at $300 each. It might be the Porsche recommended tire but under what conditions are they worth it? I expect mine will age out with lots of rubber remaining.


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PostPosted: Tue Apr 11, 2017 11:07 pm 
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Tim,

I just bought some 165's from the same store. Got the emailed receipt yesterday. (I bought them over the phone and have not picked them up yet.) I was charged $250- but I have to call. Guy I was dealing with said they would be less than that- I have to check my notes.

The store was willing to match prices for me. I mentioned Tire Rack and Hennessy Porsche in Atlanta.

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PostPosted: Tue Apr 11, 2017 11:59 pm 
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Edwin Ek wrote:
Tim,

I just bought some 165's from the same store. Got the emailed receipt yesterday. (I bought them over the phone and have not picked them up yet.) I was charged $250- but I have to call. Guy I was dealing with said they would be less than that- I have to check my notes.

The store was willing to match prices for me. I mentioned Tire Rack and Hennessy Porsche in Atlanta.


$300 is the out the door price including tax and fees, no installation. Tim


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