Dear Unregistered, the permission changes should be complete, if you notice any issues with your access on the site please let us know and we will check into it.
Hey Unregistered it seems that you haven't posted a message in our forums yet. Please join in on the fun and post a message!
Dear Unregistered,
We've noticed that you are not yet a member of our Cayman Insiders group. This group provides a number of additional value-add services via this website for a very low annual fee. You can find out more about this group here:
Insider Announcement
You can join the Cayman Insiders Group here:
Insider Enrollment Form
We hope to see you "Inside" soon!
Cayman Tires & WheelsDiscussion of Tires, Wheels, Suspension, etc.
Your Donation Will Be Used To Pay For our ever increasing bandwidth costs, our hosting Service, domain registration, software licensing fees, maintenance costs and product evaluations Only!
Please enter your donation amount above, and then click on the donate button below.
Hello everyone, I've had an unfortunate event where my left rear tire got punctured and was destroyed. Now I'm searching for a replacement tire, but I heard that I have to get the exact same N rated tires or that would cause troubles with the warranty. Is that true??
Also what is the max width tire I can fit, my current are the OEM 19"
Front: Bridegestone Potenza RE050 235/35 ZR19 N0
Rear: Bridegestone Potenza RE050 265/35 ZR19 N0
I found Pirelli PZero 275/35 ZR19, I know the different width would mean I have to change both tires, but when I calculated the diameter, I found that there will be also a slight change in the overall diameter. Would that confuse the PSM and/or the speedometer?
Finally, I know that the PZero sometimes comes as OEM tires on Porsche, but the ones I found were NOT N rated, so what do you think?
________________________
"Sir! We're surrounded!" - "Excellent! We can shoot in any direction!"
A good car will get you from point A to point B. A great car... will just get you into trouble!
PSM - Porsche Stability Management
While it can’t overcome the laws of physics, the revolutionary Porsche Stability Management (PSM) system does lend an added degree of balance and control to the Cayman’s mid-engine driving dynamics, inspiring surefooted confidence in corners and extreme situations.
A standard feature on the Cayman and Cayman S, PSM continuously monitors steering input, road speed, yaw velocity and lateral acceleration to calculate the actual direction of travel. If the car begins to steer off line, PSM instantly intervenes with precision brake inputs on individual wheels to help bring the car back onto the driver’s intended path.
If braking alone isn’t enough to correct the vehicle’s cornering line, PSM then calls on the Cayman’s engine management system, adjusting engine output as needed to help stabilize handling. PSM can also compensate in an instant for mid-corner changes in load resulting from deceleration or braking. When Sport mode is selected with the optional Sport Chrono Package, PSM’s threshold for intervention is raised, allowing for greater driver involvement. If you prefer driving without automatic PSM assistance, the system can be set to standby at any time. In this case, it will only intervene under heavy braking, where both front wheels exceed the ABS threshold.
For all of its technical ability, PSM goes virtually unnoticed in everyday driving situations, preserving the Cayman’s natural agility.
Here's the part of interest from the Tire Rack article (which is partly based on the owner's manual):
"It is recommended that only matching tires be used on Porsche vehicles. Since many Porsche vehicles are fitted with differently sized tires on their front and rear axles, this means matching the tire make, tire type and N-specification. If a vehicle was originally delivered with N-specification tires that have been discontinued and are no longer available, it is recommended to change all four tires to a higher numeric N-specification design appropriate for that vehicle. Mixed tire types are not permissible.
It is also important to know that while Porsche N-specification tires have been fine tuned to meet the specific performance needs of Porsche vehicles, the tire manufacturers may also build other tires featuring the same name, size and speed rating as the N-specification tires for non-Porsche applications. These tires may not be branded with the Porsche N-specification because they do not share the same internal construction and/or tread compound ingredients as the N-specification tires. Using tires that are not N-specific is not recommended and mixing them with other N-specification tires is not permissable.
Tires should be replaced no less than in pairs on one axle at a time. Only tires of the same tire make and type must be used. However, in case of tire damage such as cuts, punctures, cracks or sidewall bulges that cause a single tire to be replaced for safety reasons, the remaining matching tire on that axle must not exceed 30 percent wear. If the remaining tire has more than 30 percent wear from new, it should also be replaced. Handling inconsistencies may result if this is not done."
Tire Rack
Tire Rack is your one stop shop for Tires, Wheels, Suspension components and other Cayman accessories. Please Click This Link to make a purchase and the CaymanClub.Net site will receive a commission.
geek/gal/images/3/160x50_ttrlogo.gif
__________________ My Blogs
2006 CS Tip (Daily Driver & Part-time Track Toy)
2005 Ford Expedition (to haul the CS)
2006 Lexus RX400h (wifey's)
Gone, but not forgotten: 2002 WRX, 2004 MINI
Thank you very much guys... I did try searching for "N rating" but the search told me that something was wrong with my keywords. Anyway, I really appreciate the info. Thanks again!!
________________________
"Sir! We're surrounded!" - "Excellent! We can shoot in any direction!"
A good car will get you from point A to point B. A great car... will just get you into trouble!
If you are going to do 4 tires N rated tires are not a must. You would want to match speed ratings and load range with the OE tires. Porsche can not void a warranty for running non N spec tires. They may not mount them at a dealership though.
I would not go with a taller tire on the rear without running a taller tire on the front. It can throw off the anti lock brakes.
__________________
Jim Holloman | Sales Specialist
__________________________________________________ ________
The Tire Rack
7101 Vorden Parkway
South Bend, IN 46628
O: 888 428 8355 ext. 364
O: 574 287 2345 ext. 364
F: 574 236 7707 jim@tirerack.com
Thx Jim, and thanks to the Tire Rack for helping me with my online purchase of the tire (you rock guys ).
One question though (I already ordered the tire, but for future ref);
Quote:
Originally Posted by KS-CS
Here's the part of interest from the Tire Rack article (which is partly based on the owner's manual):
It is also important to know that while Porsche N-specification tires have been fine tuned to meet the specific performance needs of Porsche vehicles, the tire manufacturers may also build other tires featuring the same name, size and speed rating as the N-specification tires for non-Porsche applications. These tires may not be branded with the Porsche N-specification because they do not share the same internal construction and/or tread compound ingredients as the N-specification tires. Using tires that are not N-specific is not recommended and mixing them with other N-specification tires is not permissable.
Does that mean that non N rated will perform less??
________________________
"Sir! We're surrounded!" - "Excellent! We can shoot in any direction!"
A good car will get you from point A to point B. A great car... will just get you into trouble!
Tire Rack
Tire Rack is your one stop shop for Tires, Wheels, Suspension components and other Cayman accessories. Please Click This Link to make a purchase and the CaymanClub.Net site will receive a commission.
The main problem is that with non N rated tires you are now something of a test pilot. That being said, the consequences for a street driver are probably not too disastrous.
).
Linear Mode
