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Old 07-11-2009, 11:05 PM   #1
irascible
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Default Pictures? 18x8.5 +45 w/245/40/18

I did alot of searching, and didn't find much. I know these are roughly .7" taller than stock and will show about 4mph slower on the speedo, but anything to raise the gear ratio is great.

My '06 WRX has a complete '06 STi drivetrain swap, and will be going on axis halo rims. I wanted to go with a 245/35/18 but the Sumitomo HTR Z III XL didn't have that size.

I have stock struts with prodrive springs. I don't want to roll the fenders, so if these rub i'll exchange them for 255/35/18's. If anyone has pictures of these size tires on their car that would be great too.

Any positive input is appreciated.

Thanks.
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Old 07-12-2009, 08:52 PM   #2
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Hey irascible,

I'm probably not going to be much help, but it depends on how much camber you're willing to run. I'm on stock suspension and camber (06 wrx) still and was just fitting some new wheels/tires on mine - 255/40s on 17x8.5 +45. I'm having trouble with the tires hitting the rear fender lip, which isn't rolled yet. As far as inner fenders go, the tires should clear mostly under compression and turning, but it's close.

A 245/40/18 would probably hit the plastics at full lock especially under compression, being as tall as it is. As far as the fender goes, it might hit even being narrower than the 255, but this again depends how much camber you are running.

I'm by no means an expert on this, but hopefully I helped a little .

-Cory
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Old 07-13-2009, 12:26 AM   #3
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you'll have to roll the fenders in either case. Less I would think with 255/35/18 but still at +45 you're 23mm further out than stock. Your rear fenders ain't going to like you (mattering on suspension).
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Old 07-13-2009, 10:34 AM   #4
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Quote:
Originally Posted by mosc View Post
you'll have to roll the fenders in either case. Less I would think with 255/35/18 but still at +45 you're 23mm further out than stock. Your rear fenders ain't going to like you (mattering on suspension).
I would rather avoid rolling the fenders, but it sounds like I might if I keep these. I heard the Sumitumo's run wide too. According to tirerack's site, they are measured for 8.5" rims... but that's why I was hopeing to find pictures.

btw, +45 is only 8mm different than stock.
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Old 07-13-2009, 10:36 AM   #5
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Originally Posted by ZoneMaster View Post
Hey irascible,

I'm probably not going to be much help, but it depends on how much camber you're willing to run. I'm on stock suspension and camber (06 wrx) still and was just fitting some new wheels/tires on mine - 255/40s on 17x8.5 +45. I'm having trouble with the tires hitting the rear fender lip, which isn't rolled yet. As far as inner fenders go, the tires should clear mostly under compression and turning, but it's close.

A 245/40/18 would probably hit the plastics at full lock especially under compression, being as tall as it is. As far as the fender goes, it might hit even being narrower than the 255, but this again depends how much camber you are running.

I'm by no means an expert on this, but hopefully I helped a little .

-Cory
Right now i'm running stock camber. I didn't think about full lock, that's a good point. If you're fender's are rubbing on stock suspension and 17's, then i'm definetely going to have trouble. lol
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Old 07-13-2009, 12:24 PM   #6
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Kumho XS come in 245/35.
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Old 07-13-2009, 12:47 PM   #7
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Quote:
Originally Posted by irascible View Post
btw, +45 is only 8mm different than stock.
Actually... MY02-09 Impreza/WRX/OBS come w/ +55mm offset.
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Old 07-13-2009, 12:50 PM   #8
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Actually... MY02-09 Impreza/WRX/OBS come w/ +55mm offset.
Actually, you guys need to read my first post in its entirety. Full STi drivetrain, so actually i'm correct
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Old 07-13-2009, 12:56 PM   #9
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Originally Posted by Crawdads View Post
Kumho XS come in 245/35.
I was torn between the Sumitomo and Federal's (which come in 245/35 too). I liked the better treadwear rating of the Sumitomo's and the price was excellent at $119/ea for 245/40/18's.

So, I didn't research anything else as the forum was raving about these two tires mostly... it caught my eye.

I'll look into the Kumho's, ty.
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Old 07-13-2009, 01:07 PM   #10
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I said 23mm because it's 30mm more tire than stock (15 on each side) PLUS the 8mm less offset which, you guessed it, means your tire is 23mm closer to the fenders. Stock is +53 225 wide. Wow, math is so difficult! [/sarcasm]

245/35/18 doesn't guarantee you won't have rubbing anyway. Especially at 8mm less than stock offset. Even more likely if you have lowering springs.
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Old 07-13-2009, 02:04 PM   #11
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I would start looking in the 225/235 range if you don't want to roll your fenders. 245+ WILL rub. Prodrives aren't that stiff of a spring either...
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Old 07-13-2009, 02:06 PM   #12
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Originally Posted by aaronmsadler View Post
I would start looking in the 225/235 range if you don't want to roll your fenders. 245+ WILL rub. Prodrives aren't that stiff of a spring either...
That's what I was afraid of; yah, I bought the prodrives because I didn't want much stiffer than stock.

So i'm assuming the 255/35's are also out of the equation?
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Old 07-13-2009, 02:11 PM   #13
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Quote:
Originally Posted by mosc View Post
I said 23mm because it's 30mm more tire than stock (15 on each side) PLUS the 8mm less offset which, you guessed it, means your tire is 23mm closer to the fenders. Stock is +53 225 wide. Wow, math is so difficult! [/sarcasm]

245/35/18 doesn't guarantee you won't have rubbing anyway. Especially at 8mm less than stock offset. Even more likely if you have lowering springs.
You said further out, indicating one side, so I assumed you meant offset. You explained it alot better here where it makes sense.

It sounds like i'm going to end up exchanging these tires for a set of 235's But it's not like I really need 245's... just like the wide tire look.
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Old 07-13-2009, 02:12 PM   #14
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255 anythings are out of the question without modifications. Just pull/roll your fenders. It's not as expensive/hassle as people think. You will be much happier in the long run doing it right the first time. As an added bonus you can actually run a good size tire!
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Old 07-13-2009, 02:38 PM   #15
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Quote:
Originally Posted by aaronmsadler View Post
255 anythings are out of the question without modifications. Just pull/roll your fenders. It's not as expensive/hassle as people think. You will be much happier in the long run doing it right the first time. As an added bonus you can actually run a good size tire!
Those are very good points... If I do decide to roll the fenders, I want to make sure to do it right. I don't like the look of a tire that's stretched to the edge, or over the edge. I like it flush with the rim, that's why I purchased the 245's.
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Old 07-14-2009, 12:04 AM   #16
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18x8.5 +48 255/35/18

Not exactly what you were looking for, but its close.



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Old 07-14-2009, 11:27 AM   #17
irascible
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Originally Posted by retroXvertigo View Post
18x8.5 +48 255/35/18

Not exactly what you were looking for, but its close.
That's exactly what I was looking for! Thanks. Does it rub ever? Ex. When in full left/right steering lock, and/or with a bunch of people in the car? Did you have to roll your fenders?

That looks very nice... those tires seem to match up perfectly.
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Old 07-14-2009, 02:19 PM   #18
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Originally Posted by irascible View Post
That's exactly what I was looking for! Thanks. Does it rub ever? Ex. When in full left/right steering lock, and/or with a bunch of people in the car? Did you have to roll your fenders?

That looks very nice... those tires seem to match up perfectly.
No rubbing. Rolled front and rear.


RCE blacks as far as suspension goes.
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Old 07-14-2009, 03:03 PM   #19
irascible
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No rubbing. Rolled front and rear.


RCE blacks as far as suspension goes.

That's the type of info I was looking for the entire time, thanks. Your setup turned out really nice, love the look.
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Old 07-23-2009, 10:25 AM   #20
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Well, I ended up getting 18x8.5 +45 Gram Lights hooked up with 245/40/18 Sumitumo shoes!

With Prodrive springs, and no fender rolling... it doesn't rub, the tires are a perfect fit for 8.5", and no rubbing!

I'll post pictures soon so pictures are available for the next person searching.
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Old 07-23-2009, 10:40 AM   #21
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+1 for Prodrive Springs...
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Old 07-23-2009, 11:55 AM   #22
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I can't see/post pics from work buy my old setup was just that 18x8.5 with 245/40/18. Search for some of my pics if you want.
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Old 07-23-2009, 01:27 PM   #23
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my old set up on swift springs 18x8.5 +45 245/40/18 no rubbing or fender mods





latest set up 18x9 +45 255/35/18 still on springs will probably need a minor rear fender roll.no rubbing yet,but havent had a chance to drive much yet.
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Old 07-23-2009, 01:56 PM   #24
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I have a 07 wrx. Stock struts on h-tech. Have advans 18x8.5 with 45mm offset. Running 235/40/18 federals ss-595(run wider, so like 245) and they rub. Rolled the rear all gone. Expect on hard bumps going 70 and full car. I also had this question when I bought my new set up and I wanted to go as wide as I could without rolling the fenders. Ppl told the wrong this. If I knew I would of rubbed. I would gone 245 on the federals- that's 255. So just get the 255 and roll the rear.
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Old 07-23-2009, 02:28 PM   #25
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I can't see/post pics from work buy my old setup was just that 18x8.5 with 245/40/18. Search for some of my pics if you want.
Cool, if In find them i'll add them to the thread.
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