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Cayman Tires & WheelsDiscussion of Tires, Wheels, Suspension, etc.
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here is my situation, the car will mostly be used for day to day trips, the car don't have PASM, a relatively old lady might use the car occasionally, and i would like to be able to use the tires for as long as possible.
i do like the S wheels and the way they seem to resemble the carrera GT ones. what are the different effects of 17' and 18' eg: fuel efficency, acceleration, or perhapse tires for 18' wheel is more expensive, i'd like to know these things first before making a decision.
PASM - Porsche Active Suspension Management
This active damping system offers continuous adjustment of individual damping forces based on current road conditions and driving style.
The driver can choose from two setup modes, ‘Normal’ and ‘Sport’, using a separate ‘damper’ button on the center console. ‘Normal’ mode is designed for general road driving and circuits with uneven tarmac. ‘Sport’ mode is intended for smoother track surfaces, where the harder settings help eliminate pitch and roll.
In either mode, PASM continuously evaluates the current conditions while automatically selecting the corresponding damper rates from the respective set of mapped values.
A range of sensors are used to monitor the movement of the body under acceleration, braking and cornering maneuvers, as well as on poor road surfaces. The PASM control unit then evaluates this data and modifies the damping force on each individual wheel in accordance with the selected mode. The result is a significant reduction in body movement as well as a better grip on the road.
For example: if ‘Sport’ mode is selected, the suspension is automatically set to a harder damper rating. If the quality of the track surface falls below a certain threshold, the system immediately changes to a softer rating within the ‘Sport’ setup range. When the quality of the tarmac improves once more, PASM automatically returns to the original, harder rating.
Need more information about PASM? Click this link: FAQ for PASM
If I were getting a 2.7 Cayman, I'd certainly get the optional 18" CS rims and tires. I like the look better, and they should provide better handling. The 17" rims and tires may provide slightly better fuel efficiency, and slightly better snow traction. They're also cheaper, of course.
The 18" package is also going to be a little rougher riding. The wheels will get bent more easily as well. The turn in response and lateral stability will be better with the 18". It comes down to what you want out of the package. The fuel economy would have a lot to do with the weight of the wheels and tires. You can get some light weight wheels to limit the negatives.
If I can help let me know.
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Jim Holloman | Sales Specialist
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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
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Have test driven both 18" and 17". On smooth pavement, little difference (17" with narrower tires rides quieter). On rough pavement, 17's more tolerant. Could not really drive the car at track speeds, but the 17's give a nice, lighter (but still communicative) steering feel and handles nearly flat. I think it becomes a matter of taste; still not sure if I am going to get the 17" or 18" wheels. The 18's have a nice muscular look and fill the wheelwells better - but seem relatively common on both S and 2.7 models. In my view, the 17's have a appealing retro look which reminds me of a certain rear engine German 60's sports car. Apparently PAG likes the look as well - considering the visuals of the 2.7 (including the fold-out poster of the red model in the brochure) consistently show the 17" wheels.
Interesting question. You'll find the smaller 17" tyres cheaper, and if you don't feel you have to buy a 'N' spec. Porsche optimised tyre, you may have more choice. The ride on non-PASM suspension will be less harsh, but it really is much more dependendt on the quality of the road surfaces you use.
FWIW I went for 18" as the tyres are 30mm wider all round and I wanted the addtional grip.
SS7
PS I've not heard of a Porsche 18" wheel rim bending or breaking outside of accident damage.
PASM - Porsche Active Suspension Management
This active damping system offers continuous adjustment of individual damping forces based on current road conditions and driving style.
The driver can choose from two setup modes, ‘Normal’ and ‘Sport’, using a separate ‘damper’ button on the center console. ‘Normal’ mode is designed for general road driving and circuits with uneven tarmac. ‘Sport’ mode is intended for smoother track surfaces, where the harder settings help eliminate pitch and roll.
In either mode, PASM continuously evaluates the current conditions while automatically selecting the corresponding damper rates from the respective set of mapped values.
A range of sensors are used to monitor the movement of the body under acceleration, braking and cornering maneuvers, as well as on poor road surfaces. The PASM control unit then evaluates this data and modifies the damping force on each individual wheel in accordance with the selected mode. The result is a significant reduction in body movement as well as a better grip on the road.
For example: if ‘Sport’ mode is selected, the suspension is automatically set to a harder damper rating. If the quality of the track surface falls below a certain threshold, the system immediately changes to a softer rating within the ‘Sport’ setup range. When the quality of the tarmac improves once more, PASM automatically returns to the original, harder rating.
Need more information about PASM? Click this link: FAQ for PASM
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Carrara white pauper's 2.7
Snickers wrapper in the door bin
Flies on the number plate
Church's scuffs on the kickplate
'Goodwood' umbrella in the back
I have 17's on mine. Love 'em: good ride, exellent steering feel and cheap to replace. As far as looks go, I have yet to have someone say, "Wow, nice car! Couldn't you have gotten some bigger wheels?"...
__________________ Be careful... the car/boat/girl you just bashed is someone's pride & joy...
2007 Cayman
36' Pace Sportfish Yanmar 370 Turbos
1970 Donzi 18 2+3 351W Holman Moody
Have test driven both 18" and 17". On smooth pavement, little difference (17" with narrower tires rides quieter). On rough pavement, 17's more tolerant. Could not really drive the car at track speeds, but the 17's give a nice, lighter (but still communicative) steering feel and handles nearly flat. I think it becomes a matter of taste; still not sure if I am going to get the 17" or 18" wheels. The 18's have a nice muscular look and fill the wheelwells better - but seem relatively common on both S and 2.7 models. In my view, the 17's have a appealing retro look which reminds me of a certain rear engine German 60's sports car. Apparently PAG likes the look as well - considering the visuals of the 2.7 (including the fold-out poster of the red model in the brochure) consistently show the 17" wheels.
Adding to the above. I too like the looks of the stock 17 inchers. That said, I bought another member's 19" Carrera S wheels and I have to say I've been pleasantly surprised at how nice the 19 inchers ride (both sets of wheels are on Pilot Sports). I also like the way the Cayman looks with the Carrera S wheels. It's a toss up in my mind. You could probably find a better deal on the 17 inch wheels w/tires in the aftermarket than you would on the 18 inch wheels. Compare the factory cost of the 18 inch wheels/tires to the aftermarket.
Bottomline, there won't be a huge difference in ride comfort between the two wheels in day-to-day driving. Effects on acceleration are imperceptible. Handling, of course, is different. I haven't noticed a significant change in fuel economy. If it's changed it may be slightly lower with the 19 inchers, but again I haven't really noticed a difference.
I know you asked about 18" wheels. I'm sharing my experience with the 17" and 19" because logically one would think the 19s would be more extreme than the 18s.
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