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Old 06-09-2009, 11:13 AM   #1
Juiced05WRX
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Default Tire Width Options

I've decided to go with the Advan RGII's 18X8.5.

What would be the ideal tire width for these if I stayed with a 40 series? 245? 255?

I don't want the tires to be stretched on and I don't want any rubbing either. I want the sidewall to be straight up and down.

Btw, the car is an 05 wrx sedan.

- or -

Should I just stick with a 235 on an 18X8 rim?

Thanks,

-Jake
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Old 06-09-2009, 02:36 PM   #2
blahhblahh
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I would go with a 245/40. Depending on your offset and ride height you may have to mess with your fenders but nothing extreme.
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Old 06-09-2009, 07:53 PM   #3
Craig-STi/GTI/944
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245-40-18
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Old 06-09-2009, 08:17 PM   #4
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Quote:
Originally Posted by Craig-STi/GTI/944 View Post
245-40-18
+2 Its the only width I would go with, if I was sticking with a 40 series tire.
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Old 06-09-2009, 10:28 PM   #5
grippy monkey
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I wouldn't go with 245/40... especially on a WRX

It's just too tall. You will have more rotation to work with which will change your gearing. I prefer a 235/40, 255/35, or 245/35 for 18" wheels. Those tires have less rubbing issues also than a tall tire like a 245/40.
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Old 06-09-2009, 11:42 PM   #6
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Quote:
Originally Posted by Juiced05WRX View Post
I've decided to go with the Advan RGII's 18X8.5.
What would be the ideal tire width for these if I stayed with a 40 series? 245? 255?
I don't want the tires to be stretched on and I don't want any rubbing either. I want the sidewall to be straight up and down.
Btw, the car is an 05 wrx sedan.
- or -
Should I just stick with a 235 on an 18X8 rim?
Thanks,

-Jake
225/40 is the correct size

245/40 is way too tall
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Old 06-10-2009, 01:05 PM   #7
Juiced05WRX
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225 is going to be stretched a bit much. I'm trying to avoid that so my rims don't get curbed in case the wife wants to drive the car.

235 on an 18X8 is perfect. Will the 235 be too stretched with the 18X8.5 rim?

Do you guys think it would be more practical to just go with the 18X8 rim?
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Old 06-11-2009, 04:02 PM   #8
mosc
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There's nothing wrong with 225/40/18 on an 18x8.5" rim. Probably .5" more than you need but certainly not a fitment problem. If you want more width, I'd go 35 sidewall (expensive). 235/35 or 245/35. Mattering on offset, those could be fitment problems for you though.
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Old 06-11-2009, 09:36 PM   #9
minizmaster
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I am wondering the same thing. I have an 06 sti with h-tech springs. Wheels are advan rgII's 18x8.5, et50. I was running 235/40/18's with the tire stretched
I felt that it affected the handling a little. As luck would have it, I destroyed one of my tires sunday, I picked up a 1/2'' u-bolt driving down the road. the tire could not be repaired. I just picked up a set of Falcon azenis rt615's in 245/40/18. I have not fit them, but wondering if I am going to rub.
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Old 06-11-2009, 10:23 PM   #10
mosc
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I've used those springs. There's no way 245/40/18 fits under there without rubbing a ton. Especially with somebody in the back seat.
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Old 06-12-2009, 10:40 PM   #11
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235 won't look too stretched depending on the brand of the tires. I have the RE01-R on my 18x8.5. I didn't want the stretch looked either. But as far as protecting them from curbage? I don't think any size tire will help if your wifey curbs it the right way...lol
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Old 06-12-2009, 10:54 PM   #12
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Here's mine. I have an 06 STI though. I'm running an 18x8.5 with 48+ offset and 255/35 18 tires. I just lowered it and no rubbing.
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Old 06-13-2009, 01:22 AM   #13
mosc
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Subi_Boy06, I have a very similar setup except on 17"s. I rub in the rear slightly. Try hitting some bumps with two or three friends in the back, you'll want to roll up those rear fender lips slightly at some point.
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Old 06-13-2009, 05:17 PM   #14
minizmaster
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here was my current set-up. these were toyo proxy 4's 235/40/18....the advans are 18/8.5 et 50. had a little bit of stretch going. I hope the 245's fit
[IMG][/IMG]
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