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Cayman Tires & WheelsDiscussion of Tires, Wheels, Suspension, etc.
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11.5 rears will not fit without aggressively rolling fenders. You'd need a 12-15mm spacer to clear the shock tower, depending on if you have the standard suspension or coilovers. And the wheels will probably stick out an mm or two beyond even the edge of the fender.
Oh yea 315's won't work at all, 305's will barely fit even after you roll the fenders and according to another member who used 11'' rears with 305's (Herman) he even had to cut his bumper a bit.
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- Suneet
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Hmm, I've got 20 x 11 on the rear with 305's, I didn't roll the fenders and have H&R coilovers set pretty low. I get no rubbing unless on hard cornering. I did have to change the spacers the wheels came with (15mm) to 17 mm.
Anyway, I have a guy with a Carrera 4S wanting to trade his Champions 19 x 11.5 for my Techarts, his has a 305 tire on the rear, and I too am debating on these. There is a guy over at 6speedonline who got those wheels to fit on his cayman woohoo real pics of the CS - 6speedonline.com Forums
Hatchimon has 11.5x19 with 62mm offset with a 23mm spacer, meaning 39mm effective offset. From what I've been told by many with the stock suspension you need 37 or less to clear the struts. With coilovers, up to 40 should work, that will give 3mm to work with. Also he's running 295 which will be narrow on 11.5 wheels. Herman (the member who rolled his fenders) had his car lowered with H&R springs, he had 19x11 ET51 with 14mm spacers, so 37 offset and he said it didn't rub with 295 but did with 305, and even then only on aggressive corners (his car was primarily for track use). So I guess it's up in the air with what suspension you have and what you can get the offset to be.
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- Suneet
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I put 295 on my Carrera Sport (10") with 42mm offset and no rubbing with strut, which means there is at least 15mm clearance on the inside. I have stock suspension with PASM.
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
Linear Mode
