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Old 04-17-2001, 09:12 AM   #1
25psi
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Cool Here is tire sizes chart. No more tire size Qs? Yeah, right!

Here we go guys!

Stock Tire Size Vs. Aftermarket Upgrade Sizes

Not Like I mind answering a size Q gazilion time, it just seems like I am runningout of the hours inthe day to do so.

Enjoy!

Eugene
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Old 04-17-2001, 09:14 AM   #2
Ginseng
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Nice work Eugene. Looks like 225/45R17 are the ticket for the WRX.
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Old 04-17-2001, 09:28 AM   #3
Scottie
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Are those calculated numbers or numbers taken from a manufacturers data sheet for a specific model of tire? From the data sheets I've seen, different model tires (even from the same manufacturer) can vary quite a bit for the same size.
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Old 04-17-2001, 09:44 AM   #4
25psi
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Smile

Scottie - Those #s are calculated.

You are right different brands do vary a little bit. Ohh, well. I am nice but not THAT nice to do THAT much of research and compare same sized tres from different barnds.

Eugene
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Old 04-17-2001, 11:33 AM   #5
garface
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So you can't just +1 and keep the same exact diameter?
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Old 04-17-2001, 11:39 AM   #6
jlyttle
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Width?
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Old 04-17-2001, 11:45 AM   #7
Tkacik
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Thanks Eugene! Going on my wall right now.
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Old 04-17-2001, 04:44 PM   #8
25psi
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Bumpy
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Old 04-17-2001, 05:03 PM   #9
david2z4
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Ask Subie Gal about width the Dunlop 9000 she had were way fatter than RE92's for the same tire size.

I would not trust a calculator for final tire selection. It is fine for finding overall diameter but not for overall width. You have to go from the manufacturers data sheets.
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Old 04-17-2001, 06:18 PM   #10
ImprezaRS dot com
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David2z4 is correct - my 205/55x16 RE730's are much wider than the same size RE92's

Also, search my links at www.imprezars.com for "calc" or "calculator" and you'll find a bunch of tire size and hp calcs, etc...

Larry
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Old 04-18-2001, 12:11 AM   #11
25psi
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Width of what?

225/45/17 tire supposed to be 225mm.

Ok, ok. I see you guys want EVERYTHING!!!

Lazy a$$es. All right! I'll hook you up!

Eugene
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Old 04-18-2001, 12:54 AM   #12
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http://25psi.topcities.com

Ok, go there and see for yourself pretty much EVERYTHING you need to know before doing wheel/tire upgrade!

Eugene
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Old 04-18-2001, 06:56 AM   #13
25psi
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Hey guys.

I am perfectly AWARE of manufacturerers differences.

This page was constructed as a GENERAL GUIDE and not "Tire Size Bible". If anyone has very specific tire in mind they shurely MUST contact tire manufacturer to find its EXACT dimensions.

I constracted this page simply for the reason of people asking same question over and over again about swaping rims and tires. Now those people have a place to take a peek before proceeding farther.

Or of course they can just ignore it if they know it all like some of us.

Eugene
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Old 04-18-2001, 07:08 AM   #14
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Hi Eugene - sorry but I see no 215/40R16 in your chart (apologies to Colin) but I think (I'm going to have to buy and prove - after learning how to drive first of course) this is the best performing 16" tire

Also I feel it is important to mention in your guide that you need a slightly wider rim width as aspect ratio decreases - e.g., 225/45R16 will fit on stock 7" RS rim but not 225/40R16s.

Thanks again for great tool to reduce basic questions!

Tim
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Old 04-18-2001, 07:17 AM   #15
25psi
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Canbaru

The sole reason 215/40/16 is not there cuz it is WAY too off from original size. As much as -8.5% off. It is WAY TOO MUCH difference. That is why it did not make it.

What do you mean BEST PERFORMING tire? It all depends what you want your tires to do. Snow tire, mud tire, tarmak tire, cruzing tire, etc, etc, etc. Also thre is a gazilion of things one would need to consider before buying a tire. Do you want quite ride or better grip? Are you willing to sucrifice some of that grip for wet handling? What about when temperature drops below 25? How important long thread life? Etc, Etc, Etc.

And as for widertire-belong-on-wider-rim. I do have a GENERAL guide on that page. Keep reading.

Eugene
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Old 04-18-2001, 09:20 AM   #16
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Wink

"Selection of a wider rim, from within the approved range, (T & RA tables) stiffens the sidewall and improves handling at the expense of handling."

What does this mean?
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Old 04-18-2001, 01:59 PM   #17
25psi
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Opppsie.

It means I ficked up a little bit.

All fixed now.

Eugene
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Old 04-18-2001, 02:58 PM   #18
megatron
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Thanks for the GREAT page. I finally understand offset.

I wasn't aware that a 225/45/17 tire would be closer to the stock diameter than the recommended 215/45/17. What gives? I was specifically thinking of getting Kumho Ecsta Supra 712s. Anyone with knowledge of these tires, which would be better, the 225s or 215s? Seems like most people go for the 215s.

Thanks,
Andy
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Old 04-18-2001, 03:29 PM   #19
25psi
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There is really no better or worse. They are just a bit different.

Eugene
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