SL-Class (R230) 2003 -- 2012: Discussion on the SL500, SL550, SL600

SL/R230: Flatstoppers

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Old Nov 29, 2021 | 10:34 AM
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From: Hudson NH
2007 SL65, 2009 SL550, 1991 SL500
Flatstoppers

Anyone using flatstoppers to help eliminate flat spots on tires during winter storage? If so, any good?
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Old Nov 29, 2021 | 10:44 AM
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I’m in Southern Maine and I’ve used them on my previous SL (R129) they worked fine with no issues. Fill with air, drive on. Currently use a set of Dollies with my R230, once it’s parked it sits until it thaws (dirt road livin)
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Old Nov 29, 2021 | 11:55 AM
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2005 R 230 SL350 (M112 3.7). Sold the 1966 W113 230SL recently
Pieces of sturdy carpet seem to do the job pretty well.
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Old Nov 30, 2021 | 10:20 AM
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From: Hudson NH
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Originally Posted by kbdixon
I’m in Southern Maine and I’ve used them on my previous SL (R129) they worked fine with no issues. Fill with air, drive on. Currently use a set of Dollies with my R230, once it’s parked it sits until it thaws (dirt road livin)
I'm just south in NH do the dollies help with flat spotting?
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Old Nov 30, 2021 | 10:37 AM
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Originally Posted by Frederick NL
Pieces of sturdy carpet seem to do the job pretty well.
Are you talking multiple layers?
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Old Nov 30, 2021 | 11:10 AM
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2005 R 230 SL350 (M112 3.7). Sold the 1966 W113 230SL recently
Originally Posted by NHSl550
Are you talking multiple layers?
For my W113 (Pagoda) I used carpet tiles with some kind of jute/rubber compound base.Tough material, never noticed any flat spots after winter. That said, my cars haven't been inactive that long any more, as we haven't had long winters for years. As long as there's no salt on the roads, I drive it. I also read that eventual flat spots quickly disappear, when driving your treasure. During the last winters my R230 has been sitting on concrete with regular tyre pressure. Never had a problem. Come to think of it, shifting the car by hand, half a meter or so, is said to be possibly beneficial for your differential gears, as it would 're-oil' them. But I doubt whether it would make any difference inside that magic box.

Last edited by Frederick NL; Nov 30, 2021 at 11:13 AM.
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Old Dec 2, 2021 | 09:10 PM
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Yes they do a very similar job as the race ramps, when I moved down the dirt road the dollies help to dissuade the casual drive during mud season. It takes about 20-30 min to get the car on the ground.
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