 wheel size?, what would happen? |
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 Jul 10, 2005 - 3:09 PM
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Enthusiast  Joined May 25, '05 From Reno Currently Offline Reputation: 0 (0%)  |
hey you guys! well im thinkin about some rims and what would happen if i were to get 225/45/17 tires on em? would it mess up the speedo and would it mess with my milage in any way? i dunno any help would be appriciated! thanks in advance!
derick --------------------  |
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Jul 10, 2005 - 6:07 PM
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Enthusiast Joined Jan 26, '05 From Ashville, Ohio Currently Offline Reputation: 2 (100%) |
i have 215/40/17 on mine and it throws my speedometer off about 4-5 miles/hr in my favor so if it says im going 60 im really going 55-56
This post has been edited by kristinw85: Jul 10, 2005 - 6:07 PM |
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Jul 10, 2005 - 6:39 PM
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Enthusiast Joined May 25, '05 From Reno Currently Offline Reputation: 0 (0%) |
really? i see a lot of 6gc with that size of tires. hm wre the tire size that we are supposed to get for 17?
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Jul 10, 2005 - 9:49 PM
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 Enthusiast Joined Aug 29, '02 From ny to philly Currently Offline Reputation: 0 (0%) |
I'd say 225/45s are a bit large. I'd stick to 215/45s or 225/40's
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Jul 11, 2005 - 2:26 AM
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Enthusiast Joined Apr 8, '05 From Norway Currently Offline Reputation: 0 (0%) |
The correct size for 17" rims on a 6gc is: 215/40/17.. That should keep the speedo happy.
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Jul 11, 2005 - 2:35 AM
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 Enthusiast Joined Jun 29, '04 From Netherlands, Helmond Currently Offline Reputation: 0 (0%) |
If you want to know which tyre sizes used with a certain size wheel do not mess up the speedo try this link :
Tyre Calculator on a Miata site 
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Jul 11, 2005 - 2:55 AM
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Enthusiast Joined Mar 3, '05 From Richmond, B.C. Currently Offline Reputation: 0 (0%) |
I've always been more fond of the calculator at 1010tires.com, which allows you to compare multiple sizes and shows you the results on your speedo.
They've also got a good tech section explaining how to properly plus-size your wheels. |
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Jul 11, 2005 - 3:21 AM
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Enthusiast Joined Apr 8, '05 From Norway Currently Offline Reputation: 0 (0%) |
QUOTE(Galcobar @ Jul 11, 2005 - 2:55 AM) I've always been more fond of the calculator at 1010tires.com, which allows you to compare multiple sizes and shows you the results on your speedo. They've also got a good tech section explaining how to properly plus-size your wheels. [right][snapback]311032[/snapback][/right] Yes, and with my suggestion 215/40/17, you get the correct speed. As the calculater on 1010tires.com also shows 
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Jul 11, 2005 - 4:39 AM
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Enthusiast Joined May 25, '05 From Reno Currently Offline Reputation: 0 (0%) |
hey thanks guys! now i noe i'm just waiting for a quote from them now! hopefully i'll be getin some rims! woot woot!
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Jul 11, 2005 - 6:09 AM
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Enthusiast Joined Apr 8, '05 From Norway Currently Offline Reputation: 0 (0%) |
QUOTE(kristinw85 @ Jul 10, 2005 - 6:07 PM) i have 215/40/17 on mine and it throws my speedometer off about 4-5 miles/hr in my favor so if it says im going 60 im really going 55-56 [right][snapback]310884[/snapback][/right] Tire 1 - 215/40R17: Speedometer1: 60.2 mph 100. km/h Speedometer Difference: 0.424% too fast Diameter Difference: 0.42% Tire 2 - 225/40R17 Speedometer1: 59.4 mph 99.1 km/h Speedometer Difference: 0.879% too slow Diameter Difference: 0.88%
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