Tire Width Options

Juiced05WRX · 06-09-2009, 11:13 AM

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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blahhblahh · 06-09-2009, 02:36 PM

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.

Craig-STi/GTI/944 · 06-09-2009, 07:53 PM

245-40-18

cpunlamd · 06-09-2009, 08:17 PM

Quote:

Originally Posted by Craig-STi/GTI/944

245-40-18

+2 Its the only width I would go with, if I was sticking with a 40 series tire.

grippy monkey · 06-09-2009, 10:28 PM

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.

Uncle Scotty · 06-09-2009, 11:42 PM

Quote:

Originally Posted by Juiced05WRX

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

Juiced05WRX · 06-10-2009, 01:05 PM

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?

mosc · 06-11-2009, 04:02 PM

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.

minizmaster · 06-11-2009, 09:36 PM

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.

mosc · 06-11-2009, 10:23 PM

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.

Magnum626 · 06-12-2009, 10:40 PM

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

Subi_Boy06 · 06-12-2009, 10:54 PM

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.

mosc · 06-13-2009, 01:22 AM

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.

minizmaster · 06-13-2009, 05:17 PM

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]

06-09-2009, 11:13 AM	#1
Juiced05WRX Scooby Newbie Member#: 202813 Join Date: Feb 2009 Location: West Jordan, UT Vehicle: 2005 WRX Sedan black/orange kandy mblzr	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 * Registered users of the site do not see these ads.

06-13-2009, 05:17 PM	#14
minizmaster Scooby Newbie Member#: 179667 Join Date: May 2008 Chapter/Region: NESIC Location: ct Vehicle: 06 sti black	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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06-09-2009, 02:36 PM	#2
blahhblahh Scooby Specialist Member#: 86659 Join Date: May 2005 Vehicle: 2005 WRX Sedan WR Blue	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.

06-09-2009, 07:53 PM	#3
Craig-STi/GTI/944 Scooby Newbie Member#: 148817 Join Date: May 2007 Chapter/Region: RMIC Location: Provo, UT Vehicle: 2007 STi, 85 944 95 Range Rover, 92 F-150	245-40-18

06-09-2009, 10:28 PM	#5
grippy monkey Scooby Guru Member#: 131067 Join Date: Nov 2006 Chapter/Region: SCIC Location: Inglewood! Vehicle: your "stance" sucks	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.

06-10-2009, 01:05 PM	#7
Juiced05WRX Scooby Newbie Member#: 202813 Join Date: Feb 2009 Location: West Jordan, UT Vehicle: 2005 WRX Sedan black/orange kandy mblzr	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?

06-11-2009, 04:02 PM	#8
mosc Scooby Specialist Member#: 177401 Join Date: Apr 2008 Chapter/Region: Tri-State Location: Philly Vehicle: 2004 STi White 16G powered lagless fun	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.

06-11-2009, 09:36 PM	#9
minizmaster Scooby Newbie Member#: 179667 Join Date: May 2008 Chapter/Region: NESIC Location: ct Vehicle: 06 sti black	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.

06-11-2009, 10:23 PM	#10
mosc Scooby Specialist Member#: 177401 Join Date: Apr 2008 Chapter/Region: Tri-State Location: Philly Vehicle: 2004 STi White 16G powered lagless fun	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.

06-12-2009, 10:40 PM	#11
Magnum626 Scooby Guru Member#: 62856 Join Date: May 2004 Chapter/Region: Tri-State Location: McDowells Vehicle: MBP SQC#197 Stockpiling parts...	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

06-12-2009, 10:54 PM	#12
Subi_Boy06 Scooby Newbie Member#: 208979 Join Date: Apr 2009 Chapter/Region: NWIC Location: Seattle, WA Vehicle: 2006 STI Blue	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.

06-13-2009, 01:22 AM	#13
mosc Scooby Specialist Member#: 177401 Join Date: Apr 2008 Chapter/Region: Tri-State Location: Philly Vehicle: 2004 STi White 16G powered lagless fun	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.