| Porsche Tires & Wheels Discussion of Tires, Wheels, Suspension, etc. |
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05-12-2009, 04:48 PM
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Tire Reccomendation
I am currently running with Lowered H&R springs 2.7 Liter Cayman No PASM
Nitto 275/30 ZR19 on my rear NT555-1 Extreme ZR is the model
These tires have been Excellent as far as wear and tear and seem to do the job really well as far as handeling and ride. I do not Track my car as of yet.
but what I am wanting is MORE of the Wheel WELL gap covered up ?
There seems to be a pretty good size gap between the top of the tire and bottom of the wheel WELL .I want to have as little as gap as possible without causing and Problems of course.
275/ 35,40,45,50 ??? ZR19
after I get the Tires I will be doing wheel spacers to bring it out some (14MM Maybe)
Any sugestions would be appreciated, 
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PASM - Porsche Active Suspension Management
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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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2007 2.7 Liter Sports Chrono SRP 4.1 Flash Remus Exhaust H&R springs 19" Gt-5 wheels de-snorked K&N air filter RS-60 style dash Infinity Basslink Subwoofer Motor Lux CF side vents and rear diffueser NR Auto Gt-3 style front bumper and GT-Rear wing Outlaw Crest
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05-12-2009, 05:11 PM
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Re: Need Advise On rear Tires
I went to the Nitto site to look at the specs...
Nitto Tire - High Performance Tires for Car and Truck Enthusiasts
...and it looks like there's only two 275 width tires in 19" size - a 275/30 and a 275/35. If you want the tire to be taller, then go with the 275/35... it is 26.57" in diameter where the 275/30 is 25.63" in diameter - that will get you another almost .5" to fill up the space... not that much when you think about it. It looks like the 275 width is the widest they have in the 19" size.
brad
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05-12-2009, 05:42 PM
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Re: Need Advise On rear Tires
Why do you think that Porsche didn't drop the car and fill the wheel wells with big ol' tires? Supporting the aftermarket, hindering performance intentionally, no style sense? Always a mystery.
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05-12-2009, 05:58 PM
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Re: Need Advise On rear Tires
There is simply just too much gap there
Maybe another Tire Manufacturer ? any sugestions?
I want my car to look Like the picture seen below with as little gap as possible .thanks
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2007 2.7 Liter Sports Chrono SRP 4.1 Flash Remus Exhaust H&R springs 19" Gt-5 wheels de-snorked K&N air filter RS-60 style dash Infinity Basslink Subwoofer Motor Lux CF side vents and rear diffueser NR Auto Gt-3 style front bumper and GT-Rear wing Outlaw Crest
Last edited by prodgers; 05-12-2009 at 06:04 PM.
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05-12-2009, 09:15 PM
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Re: Need Advise On rear Tires
Originally Posted by Santa Fe
Why do you think that Porsche didn't drop the car and fill the wheel wells with big ol' tires? Supporting the aftermarket, hindering performance intentionally, no style sense? Always a mystery.
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Winter driving and chains, they should have a Cayman "Allroad" or a Cayman "Outback" 
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05-14-2009, 02:52 PM
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Tie Reccomendation
Ok I need some opinions here my choices are
295/30ZR19
or
285/35ZR19
Trying to fill the rear without having to install wheel spacers and fill the gap between the tire and wheel well that is too big.
Also what Tire would be reccomended - I have a line on someToyo Proxes for $700.00 for 2 rear .
would the 295's Look funny?
would the 35"s be too high?
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2007 2.7 Liter Sports Chrono SRP 4.1 Flash Remus Exhaust H&R springs 19" Gt-5 wheels de-snorked K&N air filter RS-60 style dash Infinity Basslink Subwoofer Motor Lux CF side vents and rear diffueser NR Auto Gt-3 style front bumper and GT-Rear wing Outlaw Crest
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05-14-2009, 02:59 PM
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re: Tire Reccomendation
Peter - You're basically asking the exact same question in this new thread... threads merged.
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05-14-2009, 03:11 PM
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re: Tire Reccomendation
Peter - Here is the relative diameters of the tires...
Your present tire: 275/30-19 is 25.63"
A 285/35-19 is 25.8"
A 295/30-19 is 25"
So, the 285/35 will be .2" larger in diameter than what you have now. You have to divide that in half, because the diameter will be evenly divided on the "top" and "bottom" (so to speak) of the tire... so, the tallest of your options will only take up aprox .1" (one tenth of an inch) more space.
All of them would basically visually look the same in terms of height, until you got down and measured them.
brad
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05-14-2009, 03:14 PM
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Re: Need Advise On rear Tires
Originally Posted by prodgers
There is simply just too much gap there
Maybe another Tire Manufacturer ? any sugestions?
I want my car to look Like the picture seen below with as little gap as possible .thanks
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To get your car to look like that you have to lower it more. That is really slammed.
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05-14-2009, 04:36 PM
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Re: Need Advise On rear Tires
themporer is right - if you want the car to look like that, you will have to lower it more. If you try to do this with larger diameter tires, you'll have a rear tire that is so large in diameter that you'll end up messing up the ABS and PSM sensors, which is not a very good thing.
brad
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PSM - Porsche Stability Management
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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. |
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05-14-2009, 05:48 PM
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Re: Tire Reccomendation
So Maybe I will just do the 295/30 ZR19 and then at least it will be wider and maybe i wont have to install Spacers .Guess I will just have to live with the gap until I get adjustable shocks .
I will see what these tires look like on my car tomorrow before I pay for them just to make sure it does not look odd with such wide tires 
Thanks for the help
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2007 2.7 Liter Sports Chrono SRP 4.1 Flash Remus Exhaust H&R springs 19" Gt-5 wheels de-snorked K&N air filter RS-60 style dash Infinity Basslink Subwoofer Motor Lux CF side vents and rear diffueser NR Auto Gt-3 style front bumper and GT-Rear wing Outlaw Crest
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05-14-2009, 06:27 PM
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Re: Tire Reccomendation
Originally Posted by prodgers
So Maybe I will just do the 295/30 ZR19 and then at least it will be wider and maybe i wont have to install Spacers .Guess I will just have to live with the gap until I get adjustable shocks .
I will see what these tires look like on my car tomorrow before I pay for them just to make sure it does not look odd with such wide tires
Thanks for the help |
295 is pretty wide - what width wheels are you going to put them on? The wheels should be at least 10"...10.5" would be better. If they're not that wide, they may bulge the sidewalls out enough to make the 295s rub against either the fender or the shocks.
brad
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05-14-2009, 06:41 PM
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Re: Tire Reccomendation
Please consider your needs carefully. Back when I was in my 30's I messed up one 911 trying mods for reasons that really didn't perform and detracted from the original car.
Cost as much to return the car to stock as add all the junk. It is great to have a place like this to seek and receive information rather than guessing or listening to aftermarket marketing BS.
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05-14-2009, 07:55 PM
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Sante Fe
I agree with you 100% and that is why I come here
Planet Porsche is like my family .The only one I have
Thanks for the advise will take a steo back and do more research before making a costly decision
any other sugestions are welcome
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2007 2.7 Liter Sports Chrono SRP 4.1 Flash Remus Exhaust H&R springs 19" Gt-5 wheels de-snorked K&N air filter RS-60 style dash Infinity Basslink Subwoofer Motor Lux CF side vents and rear diffueser NR Auto Gt-3 style front bumper and GT-Rear wing Outlaw Crest
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05-15-2009, 08:41 AM
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Re: Sante Fe
Larger diameter tires will mess with your speedo readings, decrease acceleration and decelleration performance, make the car sit higher, and if there is enough difference between front and rear, mess with ABS and PSM. Have you considered spacers to move the tires out toward the lip to make it appear that the wells are more filled?
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PSM - Porsche Stability Management
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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. |
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Kenny
2006 Arctic Silver CS 6M, PASM, Sport Chrono,, short shifter, 19" wheels, Pirrelli tires, Milltek Catbback, Softronic SRP and 4.2 Flash.
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05-15-2009, 03:18 PM
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Re: Tire Reccomendation
Went with some 295/30ZR19 TOYO PROXY tires and it looks a lot better !!
The GT-5 wheels I have on the car needed a little wider tire tire and now I do not think I need wheel spacers at all -The wider and slightly higher profile tire really filled in the gap I was not happy with.Car looks good with the lowered H&R's and now I am much happier.
Tires were a little pricey $735.00 for the 2
4 wheel allignment with camber adjustment $189.00
I was told TOYO make the Nitto tires by the Tire co -Very similar looking tire and tread just a little more $$$
I would reccomend the Toyo or Nitto tires to anybody though the Nito NT555 was Awsome handeling and still had 1/3 tread left after 30K miles on them
they just do not make the size I needed
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2007 2.7 Liter Sports Chrono SRP 4.1 Flash Remus Exhaust H&R springs 19" Gt-5 wheels de-snorked K&N air filter RS-60 style dash Infinity Basslink Subwoofer Motor Lux CF side vents and rear diffueser NR Auto Gt-3 style front bumper and GT-Rear wing Outlaw Crest
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05-15-2009, 04:42 PM
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Re: Need Advise On rear Tires
Originally Posted by Santa Fe
Why do you think that Porsche didn't drop the car and fill the wheel wells with big ol' tires? Supporting the aftermarket, hindering performance intentionally, no style sense? Always a mystery.
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Hello, Santa Fe,,Do you think they get your comment? Well said!!
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