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Need Help about 06 non-STI tires and wheels
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Old 03 Mar 2006, 09:46 PM   #1 (permalink)
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Need Help about 06 non-STI tires and wheels

hello there
i just bought a new impreza 06 2.0 R
it came with 15'' common wheels and 195/45(not sure) tires
i want to ask you if i upgrade them to 16'' or 17'' wheels and 245/55 tires, will it make a decrease in the performance or the speed of my car?
thanx
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Old 03 Mar 2006, 09:54 PM   #2 (permalink)
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When increasing wheel size you decrease side wall size of the tyre to keep the circumference the same so performance etc is not affected


Have a look here
http://wac.addr.com/auto/obs/wheels.html
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Old 03 Mar 2006, 10:00 PM   #3 (permalink)
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Not entirely correct pete mate wheel mass is the downside a larger wheel weighs more, hence more power is needed to turn it, irrespective of total overall diameter/circumference hence most ppls desire for lightweight but strong rims,so a larger and heavier wheel will affect the performance albeit slight.
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Old 03 Mar 2006, 10:11 PM   #4 (permalink)
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Aghh.... But who said the wheel would be heavier

Many larger diameter wheel are available that are lighter than the smaller OE wheels..........
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Old 03 Mar 2006, 10:22 PM   #5 (permalink)
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ok pete whats the std weight of a std impreza alloy wheel??????? and when ordering yours did you ask the weight of them the above question was asked because vsilah is bothered about performance losses through a larger wheel to which im advising him on and trust me std subaru alloys are light to start with-i`d be prepared to say up to 75% of aftermarket alloys when moving to a larger size will be heavier than the previous set thus incurring a performance loss however most ppl will sacrifice this for the improvement in looks.
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Old 08 Mar 2006, 07:19 PM   #6 (permalink)
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If going down this route of changing wheels make sure you get the right PCD as subaru have changed the stud config from pcd100 to 114.3 (i think from 05 onwards) so make sure you buy new or ask the seller else they won't fit!!!!
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