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Author hmm am i wrong?
cpcrampton
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Registered: 16th Feb 07
Location: Stirling
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27th Aug 07 at 14:13   View User's Profile U2U Member Reply With Quote
205/40/17 will be almost the same diameter as
195/50/15 im talking about total diameter . thinking the 17 will be a little biger but how much?
AK
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Registered: 5th Jul 00
Location: Aberdeen City
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27th Aug 07 at 14:21   View User's Profile U2U Member Reply With Quote
40% of 205 = 82
50% of 195 = 97.5
cpcrampton
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Registered: 16th Feb 07
Location: Stirling
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27th Aug 07 at 14:23   View User's Profile U2U Member Reply With Quote
so this would make quite a difference in performance?
AK
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Registered: 5th Jul 00
Location: Aberdeen City
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27th Aug 07 at 14:23   View User's Profile U2U Member Reply With Quote
1mm = 0.03936996"
AK
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Registered: 5th Jul 00
Location: Aberdeen City
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27th Aug 07 at 14:24   View User's Profile U2U Member Reply With Quote
so

82mm = 3.228337
97.5mm = 3.838571
AK
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Registered: 5th Jul 00
Location: Aberdeen City
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27th Aug 07 at 14:26   View User's Profile U2U Member Reply With Quote
so...

15"+3.8" = 18.8" diameter

17"+3.3" = 20.3" diameter
AK
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Registered: 5th Jul 00
Location: Aberdeen City
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27th Aug 07 at 14:27   View User's Profile U2U Member Reply With Quote
or it would be

22.6" & 23.6"
cpcrampton
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Registered: 16th Feb 07
Location: Stirling
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27th Aug 07 at 14:28   View User's Profile U2U Member Reply With Quote
AK will i notice a performance difference tho? and will it mess around with my speed and how much ie will it put my speedo out?
AK
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Registered: 5th Jul 00
Location: Aberdeen City
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27th Aug 07 at 14:29   View User's Profile U2U Member Reply With Quote
1" bigger overall.... you will notice it, and the wheel/tyre will be heavier!

If you're bothered about performance stick with a light weight 15" wheel and 195/45.

I'd need to work out the circumfrence difference of the two etc... you can do that

[Edited on 27-08-2007 by AK]

[Edited on 27-08-2007 by AK]
cpcrampton
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Registered: 16th Feb 07
Location: Stirling
User status: Offline
27th Aug 07 at 14:31   View User's Profile U2U Member Reply With Quote
cheers il just wait on my comp mo's for now.keep the steelies on 4 now. had to remove my alloys as some biker fell of infront of me and locked up brakes and damaged front right wheel badly. great help ak

 
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