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YOUR RESEARCHROW M030 - How much stiffer?
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Use 7mm spacers all the way around
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8" and 10" widths, I used 7mm spacers all the way around.
Leading evidence: 'Use 7mm spacers all the way around' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Recommend row m030 as it is the design reference suspension' (1 discussions). For that action, 0 discussions report a resolution and 0 report an unsuccessful attempt. No action has an explicit, attributable resolution report under the current rules. These are forum reports and suggestions, not a confirmed diagnosis.
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Recommend row m030 as it is the design reference suspension
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Suggestion
I highly recommend the ROW M030 as it is the design reference suspension for the 996.
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Suggestion
Do you use different alignment specs with the ROW M030?
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Can anyone provide feedback regarding how much stiffer the ROW M030 is than the US stock suspension? Considering the upgrade (and maybe some spacers while I'm at it) for my c4 daily driver. Thanks!
Between 8% and 36% stiffer than US sport, which is also stiffer than US stock, depending on the component you are talking about. Read HERE:
http://www.pca.org/panorama/sample_article_3.html
.
Last table in the article comparing US Sport vs. ROW:
Table11sm.jpg
-td
When I got my ROW M030 installed, and was driving it for the first time, I was totally amazed at how it felt. I guess I was expecting it to be uncomfortable or bone jarring or something. It felt great, and actually felt more comfortable. It was more planted, and the floatiness was gone - it was a complete transformation for the better, in every category. I wish I had done it earlier.
I had hesitated doing it before, because I hate cars that are soooo stiff that they lose their comfort. I drive my car every day, over various road surfaces, and wasn't willing to make it overly stiff and lose it's comfort. I couldn't be happier with the upgrade.
ROW 030 is a great suspension... I have it on my C2 for 5 years now and I love it... it greatly increases the performance quotient of the car that's for sure... planted smooth... not as much lean in the corners.... for every day its the perfect compromise in suspension.... but if you mainly go over rutted and pothole laden roads... stock is more comfortable.
Initially I had mine set up to the euro specs, but that put a lot of rear camber that ate the insides of the rear tires up in just 15K miles. I reset it to US specs and now the rear tire mileage is back to 22-23K miles.
The handling is a little less crisp, but not 7K miles of tire life bad.
Thank you all for the feedback! Called for a couple estimates on the install today. Will see how it goes. Any recs on size of spacers for a 99 c4 cab with 18" turbo twists?
8" and 10" widths, I used 7mm spacers all the way around. Just be careful if you get bigger than that (on the front in particular). You'll need hubcentric.
-td
Clearly none of you drive on the roads in and around Manhattan. Agreed, on smooth asphalt in Westchester or in most cities, my RoW M030 suspension is an absolute dream and that's why I put it on the car. Planted. Stable. Predictable. Tight, and not in overly firm way. A super solid investment. However, there is no denying that it is VERY VERY VERY noticeably on the roads of New York City. I don't find it particularly terrible, but you notice every single pothole, manhole cover, steel construction plate, bridge seam, and bricked roads. It demands extra attention and I cringe almost every time I drive and vibrate over the most poorly constructed/paved roads in the union. Of course, I'd never go back to stock.
I think every city in every state has a bad road somewhere - it's not just Manhattan. Maybe there are more in Manhattan, but most folks will be on them less since they don't drive into Manhattan daily (as compared to the "rest" of us that daily drive our cars. And for other northeast drivers, pot holes are everywhere.
As for ROW, it really isn't that bad on bumpy roads, just more bumpy than stock or when compared to a luxo-barge. In the grand scheme of suspensions on 996s it's actually pretty tame.
-td
Thats about the same quoted here, with a new alignment. Does anyone know for certain if you go with 5mm or 7mm spacers, can you just reuse the exsting lug bolts? BTW, I don't need anyone to tell me that 5mm is hardly noticeable, go thicker, yada, yada, yada. TIA.
No, your should NOT use the existing lug bolts is you add spacers. The length of the new bolts should be equal to the length of stock bolts PLUS the thickness (width) of the spacer installed.
This is a source reference. Confirm exact model applicability in the original material.
