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Old 10-08-2006, 03:35 PM   #1
Alpha_32
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Default 245/45/17 on stock sti rim

i've been doing some searching and i couldn't find a direct answer to this question....i wanna get some Kumho v710s (245/45/17)...but i want to put them on my stock rims....am i gonna have alot of problems like rubbing or sidewall flex?
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Old 10-08-2006, 10:27 PM   #2
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You will be fine. That is a good size to run...
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Old 10-08-2006, 10:36 PM   #3
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aight thx
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Old 10-08-2006, 11:00 PM   #4
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You should go to 275's. That's the tire to run on '05+ STIs with the 17x8" rim...
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Old 10-09-2006, 10:32 AM   #5
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that is pretty damn wide...
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Old 10-09-2006, 12:39 PM   #6
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245/40/17.. little closer to stock sidewall
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Old 10-09-2006, 01:57 PM   #7
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Quote:
Originally Posted by Rexxyou View Post
245/40/17.. little closer to stock sidewall
+1 there.
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Old 10-09-2006, 01:59 PM   #8
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Quote:
Originally Posted by Rexxyou View Post
245/40/17.. little closer to stock sidewall

Diameter is acually a bit smaller - tire is wider but shorter (about 10 whole rev's more per mile)
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Old 10-09-2006, 03:22 PM   #9
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Quote:
Originally Posted by Alpha_32 View Post
that is pretty damn wide...
If you're running 245 V710's on a stock rim then I assume you're in A Stock?

With the STI gear ratios on the '04-'06 STi, you typically have to shift between 1st, 2nd and 3rd on a high speed autoX circuit. Going to 275/45/17 r-comps, will make your second gear good to ~60-61mph. These tires will give you more mechanical grip than 245 r-comps, and cut down on the amount of shifting you will need to do during an autoX (fast shifts take ~0.3-0.4 seconds).

The STi/WRX are nose heavy and camber challenged, and need as much rubber on the ground as possible.

Btw, the '05 STi driven Jonathan Roberts that won the A-stock Pro Finale and finished 4th in Solo Nationals was on 275 r-comps.
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Old 10-09-2006, 07:44 PM   #10
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i'm acctually in E Street Prepared
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Old 10-09-2006, 07:49 PM   #11
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Uhm, do you have to roll the fenders to cram a 275 in there?
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Old 10-09-2006, 08:13 PM   #12
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Quote:
Originally Posted by WillisW555 View Post
Uhm, do you have to roll the fenders to cram a 275 in there?
Nope. They fit under there just fine. If you do a search in the Motorsports section you can find the exact size the top A-Stock drivers are using. I'm 90% sure it's 275/45/17, but it might be 275/40/17...
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Old 10-09-2006, 08:14 PM   #13
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i'm acctually in E Street Prepared
All STi's are in BSP as of 2006 (allowed unlimited boost on stock turbo). The '02-'06 WRX is in ESP.
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Old 10-09-2006, 10:18 PM   #14
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Originally Posted by Chiketkd View Post
All STi's are in BSP as of 2006 (allowed unlimited boost on stock turbo). The '02-'06 WRX is in ESP.
oh? when i was checking my classing recently it said ESP....


oh nm i guess myautoevents had a old link or somthing......it is BSP........i was definatly running in the wrong class last weekend >_>

Last edited by Alpha_32; 10-09-2006 at 10:37 PM.
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Old 10-09-2006, 10:39 PM   #15
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Confirmed the tire size A-Stock STi drivers ('05+) are using on a 17x8" stock wheel - 275/40/17 V710's.
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Old 10-10-2006, 01:05 AM   #16
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275 FTW! I only wish they'd fit on my ESP wrx. Go to the motorsports section and check out the wide tire thread.
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Old 10-10-2006, 01:18 AM   #17
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What negative camber are guys with 275's able to run?
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Old 10-10-2006, 11:50 AM   #18
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Originally Posted by Ewok View Post
What negative camber are guys with 275's able to run?
They max out the factory camber bolts at roughly -1.5 degrees up front. In the back you want to run about -1 degrees or less (to make the tail end come around more easily).
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Old 10-16-2006, 12:13 PM   #19
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So this size(245/45/17) will fit the sti rims without any problams?
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Old 10-16-2006, 12:35 PM   #20
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It just boggles my mind when people talk about running 275's and not rubbing. I ran 245/45-17's and rubbed in the rear with -1.6 camber. Given, I was on a lowered suspension, but it was not "slammed". And I've seen 275's on an 8" wide wheel and the sidewalls are so bent over that the outter 1/2" of tread doesn't even touch the ground. Not criticizing, just observing and surprised.
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Old 10-16-2006, 02:05 PM   #21
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Quote:
Originally Posted by Rexxyou View Post
245/40/17.. little closer to stock sidewall
Use this.

http://www.miata.net/garage/tirecalc.html
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Old 10-16-2006, 03:20 PM   #22
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Quote:
Originally Posted by Alpha_32 View Post
i've been doing some searching and i couldn't find a direct answer to this question....i wanna get some Kumho v710s (245/45/17)...but i want to put them on my stock rims....am i gonna have alot of problems like rubbing or sidewall flex?

The 245/45-17 will fit just fine with zero problems. If you are running AS with this car then you can go up to the 275/40-17 with 3mm spacers front and back and it will fit fine. That is what the 2006 AS ProSolo National Champ ran and it sure worked well for him. =)

<edit>

Since you are running BSP and an 8" rim the same applies to you. Although you can now run front camber plates and larger front spacers if you wish.

-Paul

Last edited by AtomicRacer; 10-16-2006 at 03:26 PM.
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Old 10-16-2006, 03:24 PM   #23
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Originally Posted by mav1c View Post
It just boggles my mind when people talk about running 275's and not rubbing. I ran 245/45-17's and rubbed in the rear with -1.6 camber. Given, I was on a lowered suspension, but it was not "slammed". And I've seen 275's on an 8" wide wheel and the sidewalls are so bent over that the outter 1/2" of tread doesn't even touch the ground. Not criticizing, just observing and surprised.

If you were rubbing with that size tire you did something wrong with your setup. There is enough room to run 275's without rubbing in an AS ruleset. If they can do it so can you.

-Paul
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Old 10-16-2006, 03:27 PM   #24
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Originally Posted by Slow_Boy View Post
So this size(245/45/17) will fit the sti rims without any problams?
Correct.

-Paul
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Old 10-16-2006, 05:58 PM   #25
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Quote:
Originally Posted by AtomicRacer View Post
If you were rubbing with that size tire you did something wrong with your setup. There is enough room to run 275's without rubbing in an AS ruleset. If they can do it so can you.

-Paul
Well, I did nothing wrong. I've changed suspensions at least 30 times, so I'm no newbie. I think part of it was due to the large, bulging sidewalls on the Nitto NT-01, and part was due to the too soft springs. Anyway...I really doubt 275/40-17's on a car with a lowered suspension, and run at the track, would not rub. Only way would to be to run SUPER stiff springs. This past weekend I saw an STI at the track with 255/40-17 RA-1's on 17x9.5 +44 wheels and he had to REALLY roll his fenders to keep from rubbing. I guess that was all the extra wide wheel.

Last edited by mav1c; 10-16-2006 at 06:19 PM.
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