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Found 20 results

  1. Well, the rears on my 1st set of P Zero Rosso tires is down to 3/32 and it is time to start looking for new ones. I managed 11,000 miles. The car is an 06 C4S and the only N rated tires for it are Michelin SP2s, the P Zeros, and a model of Bridgestones all with bad tread wear ratings. The Rossos handle well but I did't realized how bad they rode until I put Sottozero series 2s on for the Winter. The car feels great on those snow tires! I'm sure they do not handle as well at the limits but, who drives at the limits in a snow storm? My car is a daily driver and I might get to the track once a decade. Ride and noise levels are significant factors. The two tires that I can get with better wear ratings are the Michelin Pilot Super Sports and the Bridgestone RE 11s both not N rated. Does any one have experience with these tires? Am I asking for it putting unrated tires on the car? The dealer will only put N rated tires on the car and they will not even discuss other tires.
  2. If my interwebbing is at all correct, there seems to be some differences between the 955/7 and the 958 wheels. I know they are interchangeable between vehicles, but I suspect there's some difference between the backspacing and offsets. I'm trying to get some some proper and semi-aggressive AT tires fitting to my CD. While I know the OEM 255/55-18 tires will fit with no issues, I'm wondering if I can't get a slightly taller and/or wider tire on my rig. Having access to OEM wheel specs should help me in that quest. Can you point me to a resource for OEM wheels specs? Specifically, the 18 inch wheels? Thanks
  3. 2006 Carrera S I need new rear tires, but not new front ones. My Porsche dealer service manager says I can't mix tire makes/brands between front and back. Currently I have Bridgestone Potenza Pole Position A/S on both (different sizes front/back). I'd like to replace the rear tires with Continental ExtremeContact DWS in order to save about USD $100. The car is not raced. Would I be taking any serious risk with my plan?
  4. I never realized that i needed one, bought car in auction and i guess it doesn't have one. How can I get one, need new tires and i do not have the unlocking thing!
  5. I need to replace the rear tires on my 2007 C4s and it turns out the Michelin Pilot Super Sports are completely unavailable, with no ETA. Even if one makes allowance for the odd size and likely small demand, that is still pretty shocking. What alternative have you tried and what do you recommend? Car is a daily driver, street driven, I value quiet running (not that our cars are *that* quite, but would rather not add running noise).
  6. I did my first track day in my 997.2 S, and am hooked. Next up is to avoid grinding down my street rubber, and move to DOT approved dry tires and wheels. I currently have 19" wheels on the car, but am thinking of going to "-1" or 18" wheels as there seem to be more tire options, and they are a bit less expensive. I've got the following questions: 1. What wheel widths should I be looking for? 2. What is the corresponding tire sizes? 3. What offset is 'right' and if right is different from 'acceptable' what's the range? 4. Any tire recommendations (folks at the track were raving about the Nittos)? Thanks!
  7. I posted this on http://www.6speedonline.com and haven't gotten any response. Im trying to decide on tires for my new wheel setup. I found this great wheel and tire calculator but Im having trouble finding some of the specifications. For instance to figure out if the tires will interfere with the suspension its asking for "suspension clearance". Its also asking for fender clearance and wheel well clearance? Dose anyone know this information? Im getting 20" x 9.5" in the front and 20" x 10.5" in the back. Every time I do a search for sizes the closest I come it people running 20" x 9" in the front and 20" x 10" in the back. I wouldn't mind running all 10.5 all the way around but I don't think that will work. 2004 Cayenne S Any help would be greatly appreciated. Here is the wheel and tire calculator. http://www.wheel-size.com/calc/?whee...=30mm&scl=50mm
  8. Has anyone changed their rear tires from Michelin PS2 285/30-18 to Super Sports 285/35-18? The SS's are less expensive and better regarded than the PS2s, but they don't come in a 285/30-18 size. I did the math (and browsed previous postings on the subject), and the 35s are about .5" taller in radius. I prefer not to go narrower to 265. Does it make that much of a difference in handling? What about acceleration? My speedometer is currently 10% fast, so this may bring it down, though it's the least of my concerns in all honesty. Thanks.
  9. Hi everyone. I just called my local tire shop to purchase some rears (285/30/R18 Pirelli P Zero Rosso N4 Porsche Spec) for my 996 and they told me that they are going to be discontinuing this tire next year. Has anyone else heard the same? Just for thoughts, what will you ride for a daily driver tire (wet/dry performance?)
  10. A new owner of 02 996tt with a question about the tires and acceptable rolling diameter differences between the front and rears. I apologize for bringing this question again, did an extensive search here and on rennlist and I am finding a bit of a conflicting information. So far, looks I have come to conclusion that the front to rear tire diameter difference within 2% is predominantly acceptable by forum users that appear to be knowledgeable and factual. Some of them are actually stating to stay within 1% max. But, then I ran into a replay to similar post from a very reputable member who is claiming “as a rule of thumb difference up to 4% is acceptable”!!!. One of the explanations for 1% or less that I have found is that the original P-design setup was with 3 revolutions per mile difference (832 @ R and 829 @ F) which is 0.3 % diameter difference (616 mm (24 ¼”) R (~ 24 3/8” ) and 618 mm F) – almost identical rolling diameters between the axles. I did not have a chance to check for available information in P technical publications to find any design/engineering rational for such interpretation of the original set up. Now, if you allow for 2% diameter difference you are ending up with almost 7 times as much spin differential in the VC, not to mention 13 times as much at 4% diameter difference. 4% also sounds a bit large as the axle center would go up for almost a half inch with the tire diameter increased for 1 inch one over the other (4% at 25.5” reference diameter). I might be wrong on all of this, and I again I did not have a chance to check in P technical publications. I apologize on a long note and appreciate any clarifications and advice as my plan is to try to come up with some out-of-ordinary tire size combinations within the 18`OE rim constraints (strictly driven by limited choices I have here in Canada, plan to control my budget and idea to get started with a good ``starter`` street tire that is not Michelin PS2 :D and slowly to start learning the car - would like to go with Conti DW or Super Sports but struggling to figure out correct sizes ). Thanks.
  11. I put the Ventus V-12s on the Turbo Cab and was looking at doing the same for the GT3 when the time comes (shod with B'stones) until I heard the too-good-to-be-true spiel on the Pilot Super Sport. Once it was finally available, I saw happily that the 235-40-18 size was available for the fronts but SHOCKED to find out that the 295-30-18 was not only unavailable, but that Michelin has NO INTENTION of making that size. Here is their initial reply and my reply to them which was unreturned... (insert favorite derogatory French comment here...) Owen, we appreciate your request for Michelin Pilot Super Sport in size 295/30ZR18. Unfortunately, we do not have any plans to manufacture this tire at this time. We are constantly looking at market demand and integrating into our development and production processes. Your request will be forwarded to the appropriate Marketing Group for future consideration. my reply: Thank you for the quick reply to my question. I have to admit, though, that I am stunned by the response. That tire size is spec for the 18 x 11 rear wheel on ALL wide-body Porsche 996 cars and some narrow body models like my GT3. A quick review of the production numbers for Turbo models, Carrera 4S models, GT2 and GT3 reveals around 45,000 units from just Porsche requiring the 295/30ZR18 tire. Oddly, Michelin make the 235/35ZR18 PSS which is only applicable to the 8.5 inch wide front wheels for the 996 GT2 and GT3. The totals for those 2 cars is less than 5,000 over the production run. (all the other cars mentioned above have an 8" wide front wheel and use a 225 mm wide front tire.) I fully realize that it is all about the math, but that being said, do Michelin collectively think they'll sell more 295/25ZR21 versions of the Pilot SuperSport? Then again, it can't be all about numbers because these tires aren't hung on high-volume cars like Camrys, Civics and other non-performance cars and trucks. Just food for thought as the company could make a lot of Porsche owners who had been anxiously awaiting this new tire happy, and take a chunk back out of Hankook after the Car and Driver tire test of a couple years ago. Thanks again, As I said before, no reply from "Bib" Sorry for the long post but I figure if more Porsche owners hammer at Michelin about this, maybe they'll start making the tires we need/want
  12. Hi All, I've got a 2003 Cayenne S which I've owned since new. I just recently had a blowout (first flat tire ever with the car) and now need a new set of summer tires. Since the flat, I'm more aware of the existence of run flat tires, since this car does not carry a spare. However I have no experience with them. Specifically, my biggest worry is to have a flat and not be able to move to a safe place on the road to repair it without damaging the wheel. With the blowout I was lucky to get over quickly and safely, and my tires had a very good sidewall that protected the wheel. I swap summer/winter tires and yes, I am a spirited summer driver. Gentlemen, is a RFT a 'must have' for my situation, and are these tires as quiet / gripping / durable as others? Any experience? Thank you all, I value your input. Ken
  13. I have a 2003 911 cabrio (no PSM) with the Carrera 18" wheels and need a new set of tires. I have decided on the Michelin Pilot Super Sports based on reviews and price. Unfortunately, they do not make stock sized rear tires (285/30 ZR18). My choices for rear tires are: 285/35-18 - (taller) or 265/35-18 - (narrower) My choices for front tires are: 225/40-18 - Original size 235/40-18 - Seen others recommend... not sure why 2 questions: 1) Which rear tire size would you recommend? 2) Why should I change the size of the front tires from the original size? Thanks for you input.
  14. I was wondering whether anyone is using 225/40R18 on the fronts with 285/35R18 (stock is 30) on the rears on a 2002 996 C2? Will this negatively impact the ABS & PSM? Details: I have a 2002 996 C2 with 18" rims. Stock rear sizes are 285/30R18 except only 285/35R18 are available for the Michelin Pilot Super Sports. I have done the math, they are about 1/2" taller in radius, and 81.223 vs 77.698" in circumference 3 -4 % error on the odometer, but my odometer is 10% fast anyway, so I dont care. I have looked at the forums and have not found a definitive answer. The tire place does not want to mount them on the car. They called Porsche, and they advised against it. OTOH, Porsche also advises against non N rated tires...Local tuner says it's fine. Please advise.
  15. looking to replace my Bridgestone Potenza RE050A tires on my Boxster. Any good suggestions? I did get 30K on my Bridgestone Potenza tires. This is my daily driver. 235/35R19 and 265 in the rear. Looking at keeping around $200-250/ tire. Thanks!
  16. 2002 C4S Track season is pretty much over here but thinking ahead to the Spring... does anyone here who tracks their car have any recommendations for a set of tires for the track that are still suitable for daily driving in the street (ie. in the rain, etc... no slicks). I wanted a tire that has both good track performance and also won't wear out in 2 weekends at the track. There are a lot of rankings/feedback at Tire Rack and Discount Tire but I thought I would see if anyone here had anything in specific on their 911 that they liked before I make the leap and purchase. Thanks.
  17. Time to replace my OEM summer tires (2007 C4S, got 32,300 miles out of them)--any recs for what to replace with? I'm trying to choose between Michelin Pilot Sport PS2 or Super Sport. The Super Sports have better ratings on tirerack but the PS2s are OEM. The Super sports are about $500 less than the PS2s for all four tires. They are both Y rated with similar load capacity. Anyone try the super sports? I've never been to the track but wouldn't rule this out in the future
  18. I must replace the rear tires on my 2001 TT coupe. Only PS2s are now available, while I still have half tread on the old spec Pilot Sports on the front. I'm sure both Porsche and Michelin would recommend replacing all four. Any thoughts?
  19. Hi Everyone, Today I took my car to my mechanic to take a look at the vibration on my steering. It seems I need a new set of tires. But what I have noticed was my rear wheels are hard to turn than front tires. ALso I have noticed something else, after a ride for 30-45 min when I park the car, I could feel more heat coming from rear wheels comared to front. When I touched the rotors they are hot compared to the front rotors.(FYI I replaced rear brakes and rotors few months before and my front are really old). I know that the car has a mid engine but just want to make sure if something is wrong with my rear wheels. I dont want to ask my mechanic about this because the last mechanic who used to work with my car tried to take advantage of my ignorance when he knew that I am totally a noob on cars.
  20. Handy site to calculate different tire dimensions
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