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| The Pub For General Automotive Related Talk |
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11-06-2011, 02:41 PM
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FF.Com.Au Hardcore
Join Date: Aug 2006
Location: Melbourne
Posts: 1,674
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Last night I was talking to a few people and the discussion turned to spare wheels, two of the people mentioned that the overall size (height) of there spare wheel is actually smaller than the wheels they currently have on the car, and one of these cars is brand new from the factory, if you got a flat and put this smaller spare wheel on your car, what would the implications be, even if you only drove it to get home or to the nearest garage, can any damage be done, and would having an LSD make the matter even worse?
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11-06-2011, 02:54 PM
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Giddy up.
Join Date: Dec 2004
Location: Kramerica Industries.
Posts: 15,637
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They are called a "space saver" and alot of manufacturer's use them these day's, I personally do not like them and if I was buying an new vehicle I would option a "Full size spare" if available or if not source another rim from a wrecker's or such and replace the "space saver".
I believe that you are also speed limited when using the "space saver" ?. |
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11-06-2011, 03:32 PM
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#3 | ||
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Banned
Join Date: Feb 2010
Location: Bat Cave
Posts: 1,237
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I have the factory 19" wheels on my G6E and the factory space saver 17"
The space saver is 2" taller than the 19's it has a much larger rolling diameter I think it's stupid jap cars that have a baby spare so your car drags on the road with it fitted That said cos my factory spare is so tall, does that mean I can legally for say 22's? |
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11-06-2011, 03:41 PM
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#4 | ||
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FF.Com.Au Hardcore
Join Date: Aug 2009
Location: NSW
Posts: 551
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Uneven tyre diametres will wear an LSD, but over relatively short distances it will have near to no effect at all.
The only other problem would be brake balance would be off under hard breaking, which is why all non-standard spares are limited to 80 now.
__________________
Current Viper 2010 50th Anniversary XR6T Stock, but for how long... Previous White 2003 Fairmont Ghia First- RIP. White 1990 Ford Fairmont Exhaust, intake, cam & lowered. |
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11-06-2011, 05:48 PM
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#5 | ||
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Regular Member
Join Date: Oct 2005
Location: Mid Nth Coast NSW
Posts: 129
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Running a smaller diamiter rim and tyre will chew out the clutches in an LSD type diff due to the clutches having to take up the difference in the traveled distance between the wheels (if that makes sense). So if you have a smaller size spare put it on the front of the car and run the same size wheel on the rear not really a big deal just a bit more work when you get a flat.
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XY 351 10.3 sec 1/4 mile  :XD 302 Ute Stocker, for now. Built by me in my shed. |
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12-06-2011, 10:12 AM
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#6 | ||
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Regular Member
Join Date: Jun 2010
Posts: 95
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This came up a number of years ago in the UK where a Volvo driver replaced the flat with a factory "space saver" and drove home.
The difference in the wheel sizes was enough to cause the centre diff to be damaged to the extent it needed replacing. After some legal hassles Volvo finally replaced it under warranty. Peter. |
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Spare wheel smaller wheels on car
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