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Old 05-13-2004, 10:42 PM   #1
virpacalis
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Question best auto-x tire size for 17x7.5

What do you recommend: 225/45 or 245/40? If the latter, is there a problem and/or a fix for rubbing with my '02 sedan with stiff springs? (BTW I have RA gears.)
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Old 05-14-2004, 08:11 AM   #2
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It all depends on what kind of tire you're looking for. Street or R-Compound? (Ie: is budget an issue? )

Also, what do you define as stiff springs? Are you running a coilover setup or just springs with stock struts?

245/40's might be too wide for an R compound (I'm saying R-compound becuase you're probably in SM). R-Compounds are generally wider than their street counterparts.

225/45 is best suited for a 7.5" wheel, but a 245/40 can fit, but wouldn't be square on the wheel (would be rounded more at the corners)

Hoosier S04 245/40 $212 -- 225/45 $202

Kumho Victoracer V700 245/40 N/A -- 225/45 $160

Kumho Ecsta V700 245/40 $159 -- 225/45 $156

Kumho MX 245/40 $129 -- 225/45 $122

TA/KD 245/40 $186 -- 225/45 $165

Falken Azenis 245/40 N/A -- 225/45 $115
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Old 05-14-2004, 05:14 PM   #3
virpacalis
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Thanks for the helpful info. Indeed I'm a slow local in SM. I'm definitely going for an r-compound for my SSRs while running Rotas with Michelin PS2s daily. In terms of springs, I'm installing Cusco Zero-2Rs with the usual 7/5 setup next week.

Last edited by virpacalis; 05-14-2004 at 05:21 PM.
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Old 05-14-2004, 05:37 PM   #4
zoomfactor
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Boy, when you look at the $$ don't your eyes water

Sure would be nice to have a budget for a few sets of each per year, especially the Hoosiers!

JD <---- never tried a set of the legendary Hoosiers
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Old 05-14-2004, 07:44 PM   #5
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You can also shove a 255/40/17 victoracer on there.
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Old 05-15-2004, 09:31 AM   #6
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Quote:
Originally posted by virpacalis
I'm a slow local in SM.
You too???

-mykr.
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Old 05-16-2004, 07:48 PM   #7
MRF582
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Quote:
Originally posted by KC
225/45 is best suited for a 7.5" wheel, but a 245/40 can fit, but wouldn't be square on the wheel (would be rounded more at the corners)
is that a bad thing if the tire isn't square over the wheels? 245's will have a bigger contact patch than 225 for sure. but is there more sidewall flex that happens b/c of that?
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Old 05-16-2004, 09:23 PM   #8
SolbergWRCfan
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Quote:
Originally posted by MRF582
is that a bad thing if the tire isn't square over the wheels? 245's will have a bigger contact patch than 225 for sure. but is there more sidewall flex that happens b/c of that?
A squirmy feeling, slower turn in, and the possibility of the tire falling off the rim.

Jon
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Old 05-16-2004, 10:33 PM   #9
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Quote:
Originally posted by SolbergWRCfan
A squirmy feeling, slower turn in, and the possibility of the tire falling off the rim.


Tell that to all the stock class autox competitors at Nationals.

- Steve
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Old 05-17-2004, 07:48 AM   #10
virpacalis
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Quote:
Originally posted by zzyzx


Tell that to all the stock class autox competitors at Nationals.

- Steve
Are they putting 245s on stock rims?
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Old 05-17-2004, 03:53 PM   #11
afpdl
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Quote:
Originally posted by virpacalis
Are they putting 245s on stock rims?
Hes not just talking about stock wrxs, in most of the stock classes at nationals you will find a few people with tires way way larger then the reccomended size shoved on stock rims.
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Old 05-18-2004, 11:00 AM   #12
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If you're still learning, get the 225's because you won't notice much with the 245's until you get better. If this is your first season, I would even reccomend giving the Azenis a shot first.
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Old 05-18-2004, 12:11 PM   #13
virpacalis
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I'm well into my 2nd year and have a whole lot to learn. I'm sure EVO driving schools will help.

I'm still trying to figure out a good match for my 17x7.5 rims, but it's interesting to know that some who are competitive put a 245 on a stock sized rim.

Since it seems like a plausible compromise, what about the Toyo PROXES RA-1 in a 235/40? Is that even an r-compound tire?
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