Choosing the Right Size Tire - Page 23 - Mazda 6 Forums : Mazda 6 Forum / Mazda Atenza Forum
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post #221 of 304 (permalink) Old 10-14-2009, 08:07 AM
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QUOTE (Butterfly @ Oct 14 2009, 06:40 AM)
Quote:
Hi,

we are stationed in Europe, and bought with US-Spec a Madzda 6 3,6 ltr. tires size P235/45ZR18.

Over here in Germany nobody can tell me if I can use smaller tires. Because l am looking for some winter tires.

And I pay here around 270 USD each tire.

Can somebody help me????[/b]
What model year do you have?


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post #222 of 304 (permalink) Old 10-14-2009, 09:56 AM
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QUOTE (Mz6GreyGhost @ Oct 14 2009, 02:07 PM)
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What model year do you have?[/b]
should be 2008. We bought it in April this year.....new
My husband told me it is a 2009 MZ6S
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post #223 of 304 (permalink) Old 12-30-2009, 05:08 PM
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Great list, that's really useful info - I wished I'd found this before I went and brought some 225/40/18 tyres only to find out that my wheels were only 18 x 7 inches. They are JDM OEM rims with 215/45/18 OEM tyres. Is it detrimental to the overall handling of the car if I get them put on or is it just better and wiser to just cut my losses and get 225/45/18 or 215/45/18 tyres instead??
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post #224 of 304 (permalink) Old 01-04-2010, 04:41 AM
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QUOTE (toyoguy @ May 3 2005, 03:27 AM)
Quote:
18" (original equipment wheel is 18x7)

215/45R18 7.0"-8.0" 35 psi (6s, 6i), 38 psi (Mazdaspeed6) *original equipment size*
225/40R18 7.5"-9.0" 38 psi
225/45R18 7.0"-8.5" 38 psi
235/40R18 8.0"-9.5" 38 psi
245/40R18 8.0"-9.5" 38 psi[/b]
Hi, just a query regarding the 225/40 and 225/45 size tyres, how come the 225/45 can fit 7" rims while the 225/40 can't? Aren't they the same width?
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post #225 of 304 (permalink) Old 01-04-2010, 09:23 AM
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QUOTE (BTCC73 @ Jan 4 2010, 04:41 AM)
Quote:
Hi, just a query regarding the 225/40 and 225/45 size tyres, how come the 225/45 can fit 7" rims while the 225/40 can't? Aren't they the same width?[/b]
The shorter sidewall of the 40 series meas the sidewalls will be bulged out more than the 45 series due to the narrow rim. This can lead to instability, and possibly even the tire rolling off the rim in the extreme case.

On any "low-profile" tire (pretty much anything 50 series or lower), both the section width and aspect ratio are important to determining the safe rim widths.

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"AWD Driving: This vehicle has not been designed for the purpose of off-road driving or rallies. Do not attempt to drive over uneven or rocky surfaces, or across rivers."
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post #226 of 304 (permalink) Old 03-10-2010, 03:22 PM
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Hi,

I am looking at 2 sets of rims.

Both 18 X 7.5 but 1 is +42 offset and the other +45

I know I want 225/45/18 profile tyres will this size tyre fit on both offset wheels?

My car is a 2007 Mazda 6 Hatch. I dont intent to lower the car

Thanks,

Gaz
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post #227 of 304 (permalink) Old 03-16-2010, 02:05 PM
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I was thinking about getting 215/35/18s for my 6 but i dont see that on the list. There is however a 215/40/18, why would a tire with the same width and diameter but less rubber height not fit? I am sure I am missing something I am very new to this. Thanks for any response.
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post #228 of 304 (permalink) Old 03-16-2010, 03:07 PM
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Quote:
Originally Posted by spydamans View Post
I was thinking about getting 215/35/18s for my 6 but i dont see that on the list. There is however a 215/40/18, why would a tire with the same width and diameter but less rubber height not fit? I am sure I am missing something I am very new to this. Thanks for any response.
Because they aren't the same diameter, due to the 40-series tire sidewall being taller than the 35-series.

If you downgrade to a 35-series, the average diameter will decrease from 24.8 inches to 23.9, almost a full inch less. This will also make your speedometer 3.4% too fast, which is well outside the 2% difference that's allowable when changing tire sizes.


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post #229 of 304 (permalink) Old 03-23-2010, 11:06 PM
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Oops

Quick question, I want to know if I have to switch out a set of tires I had bought on ebay. I had apparently been half dead when ordering and didn't pay attention, but I must have searched for 215/45/17. (Running stock 17s)

Will these fit and run fine on a 2004 Mazda6 (Stock rims 17)

I see on the list 225/45/17 (IIRC)

Thanks in advance
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post #230 of 304 (permalink) Old 04-01-2010, 11:07 AM
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215/50R-17XL 95W VSB....I don't know what all the extra letters mean. Will that size tire fit?
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