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Old 08-14-2005, 11:57 AM   #1
hpracingwrx
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Default tire vs. rim width

yes i realize this is a stupid question, but i dont know a lot about wheels. anyway here goes:
can i run something as slim as 215 on a 7.5" wide rim?

i didnt really know how to search this the topics i did type came up empty handed
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Old 08-14-2005, 12:00 PM   #2
cooleyjb
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yes

I might be running a 215 on a 8" rim just to keep clear of fenders.

joe
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Old 08-14-2005, 11:11 PM   #3
cool555
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Not to hijack this thread, but what are some pros and cons of running 215/45/17 size tires on a 17x7.5 rim for a WRX sedan? Would it be a smarter choice to get a 225 width size tire?
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Old 08-14-2005, 11:44 PM   #4
Uncle Scotty
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http://www.tirerack.com/tires/tiretech/tiretech.jsp

http://www.tirecradle.com/tirefacts.htm

....read the above and get back to us with anything ya don't understand.
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Old 08-15-2005, 03:23 AM   #5
hpracingwrx
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thanks scotty
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Old 08-18-2005, 01:07 AM   #6
SgWRX
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i dunno, do those links give info on specific tire width vs. wheel width? i haven't found anything so far, but only put in 10mins of looking so far.
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Old 08-18-2005, 01:17 AM   #7
Uncle Scotty
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....pick a tire----any old tire.......ok.....I'll pick one.....lets say.....mmmmm.....Kumho MX.....and go to good ol' Tire Rack and look up the MX........go to 'specs' and voila....





Got it??????
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Old 08-18-2005, 04:32 AM   #8
subysouth
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To answer your question most directly, generally speaking a 7.5" wide wheel is the ideal width wheel for a 215/45 tire. The tire will perform better than on a 7" wheel although your wheel will have less curbage protection.

In a 45-55 series tire IMO the following are the best rim widths:

205 - 7"
215 - 7.5"
225 - 8"
235 - 8.5"

Its likely you bump up all those rim widths another half inch to get even a little more performance from the tire, but the tire looks kinda weird on the rim. The above list is a good performance/protection/looks compromise for most tires.

ss
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Old 08-19-2005, 09:16 AM   #9
SgWRX
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scotty, what the heck. i thought there was some secret magic formula for proven tire width/wheel width via those links you posted! LOL
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Old 08-19-2005, 01:21 PM   #10
dan avoN7
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Yes it is okay to run a 215 on a 7.5" rim. For all of our wheel and tire packages at Subydude we recommend a 215/45/17 for wagon's. If you have a sedan then go for a 225/45/17 because you can safely run this size tire without rubbing.
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