IainM

Changing from any bad mount to any new mount will always be rewarding.
I spent a couple 100 miles on URO RS mounts and then switched to Porsche stock, no other changes. New RS to new stock.
minimal difference. Not imperceptible, but for me not worth the 6x cost difference.
no idea of long term performance but with a 30min swap, you can buy a lot of UROs for a grand.
if you’re after the quietest cabin to hear the detail of the Burmeister then it may be worth it. If not buy UROs and get a free set of rear tires

FLYT993

rennline. beautifully made, and adjustable...street, sport, or track.

JasonAndreas

Just because Corteco is the aftermarket division of Freudenberg doesn't mean you are getting the same thing. If you check their catalog, you'll see that they sell different mounts to meet different price points. But the mounts look the same...




Until it fails and you drop a motor... The difference in price between OE and URO is $200.

71-3.0-911

Concur. I run the medium pillows with no noticeable increase in NVH.

-Scott

Sigs993

I installed the Wevo engine mounts earlier this year, replacing the original mounts that came on my C2, and the improvement in how the car drives was immediately noticeable. I have not noticed an increase in vibration.

os993

Another shout out for OEM RS motor and tranny mounts. I did this years ago, and it's been flawless. No noise or driving issues. Love the ability to install OEM RS components. Factory made for our cars, with improvement dialed in.

boomboomthump

I have authentic RS mounts but what evidence do you have to support them failing?

Also, the price difference is $350-450 depending where you get the OE mounts. $550 is presently the best price you can get them ($650 retail). The URO's are $200.

fnckr

Bump. I just bought Rennline mounts, but am considering the OEM RS mounts. I’m not concerned so much about NVH coming from a 991.1 with Numeric Shifter and cables and Soul Exhaust, and a BMW with monoball front arms.

How is the Rennline bushing longevity? There is an isolated post on RL about the Rennline and Wevo bushings/pillows compressing after several months and leaving the center mounting bolt loose. Frankly, it’s hard to believe because polyurethane shouldn’t deform or break-in that way, but I tend to trust other RLers.

https://rennlist.com/forums/996-foru...ome-loose.html

So, those of you with Rennline, Wevo, or other polyurethane motor mounts, have you checked your mounts recently and found them loose? Should I avoid the whole headache and purchase OEM RS despite possibly shorter lifespan?

71-3.0-911

I have had the Rennline mounts for about 5 or 6 years. I recently had the entire back end of the car disassembled and the entire engine mount out. I saw no deforming or compression issues. Everything was stable and firm as it was bolted back up. I am running the medium pillows.

After reading the thread posted, it may be a 996 issue.

-Scott

fnckr

Thank you! From my understanding of poly, it seems that the bushings would crumble instead of compressing permanently. Very happy to read yours have held up well.