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Old 08-22-2005, 09:23 AM   #1
Lordhowe
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Default 245's on this setup, need input

I have a 03 wrx with the following suspension mod:
1. KYB AGX 4 way adj struts
2. Eibach prokit springs
3. Perrin rear antisway with endlinks
4. cusco front and rear strut brace

the chamber will be stock (unchanged).
I'm using 17X8 Atech wheels that have 5x100 with a 46mm offset.
currently i'm running 225-45-17 pirlli's Pzero nero with no rubbing what so ever, although it is pretty close to the fender edge.

I did a search and found the following page: http://forums.nasioc.com/forums/show...&highlight=245

Just need a little more input: I know 235-40-17's will be the largest i can fit without rolling the rear fenders. I plan on rolling them, could i clear 245's? My real concern isn't near the fenders but on the spring side. The tires i will be using are most likly going to be BFgoodrich KDW's, which are one of the wider ones. Anyone have my setup and tell me about spring side rubbing issues? any input would be wonderful, thx ahead of time!
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Old 08-22-2005, 02:04 PM   #2
Lordhowe
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bumpty bump .... help help
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Old 08-23-2005, 11:57 AM   #3
subieworx
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You will be fine with that setup and 245's. You will have to roll the fenders.
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Old 08-23-2005, 01:11 PM   #4
Lordhowe
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would i have to roll the front fenders? or only rear?
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Old 08-23-2005, 10:08 PM   #5
JAzad77
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I have the same wheels as you, in Bonze with 235/45-17's lowered on Perrin Springs and I needed to role my rear fenders. It's in the shop now and I should get it back tomorrow with the rolled fenders. Only the rears.

If your car is lowered more than an inch over factory in the rear and you want to run more than 225 back there, you will have to role the fender or decrease your tire profile.

I'm running 235/45-17 with a 1.5" drop. I can just get the tip of one finger in the rear and I have a two finger gap in the front. With my setup, I went wider and taller than norm.

There are various ways to role your fenders. Some methods take hours and some take a few minutes. I HIGHLY advise you to take the car to a body shop and have them professionally do it. Just get ready to pay for it.

Do a search on “rolled fenders” or “fender rolling”.
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Old 08-24-2005, 12:21 PM   #6
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Quote:
Originally Posted by JAzad77
I have the same wheels as you, in Bonze with 235/45-17's lowered on Perrin Springs and I needed to role my rear fenders.

There are various ways to role your fenders. Some methods take hours and some take a few minutes. I HIGHLY advise you to take the car to a body shop and have them professionally do it. Just get ready to pay for it.
What tires (brand/model) are you running? That's the first time I've heard of someone running 235's and needing fender rolling...although you're tires look like they might be taller than stock (nominally 25.3" diameter vs. 24.9") and you're offset is a tad low (+46).
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Old 08-24-2005, 04:55 PM   #7
Lordhowe
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how much does it cost to get your fenders rolled professionally?
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Old 08-24-2005, 08:26 PM   #8
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Nitto NT 555's. It's costing me $500.
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Old 10-17-2005, 03:16 PM   #9
Lordhowe
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Quote:
Originally Posted by subieworx
You will be fine with that setup and 245's. You will have to roll the fenders.
so i should won't experience rubbing on the spring side?

thx
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Old 10-17-2005, 03:46 PM   #10
DougM
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spring side? ..probably not with a 46 offset

(wide) 245's on an 8" rim isn't optimum. I have wide 245/40 (Neova's) on my 7.5" wheels and it's stupid... the sidewalls are yanked and mushy.. (solo racer)
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Old 10-17-2005, 04:21 PM   #11
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There is nothing wrong with a 245 on an 8" rim. That is normally the minimum recomended rim width for a 245 40 tire.

You will not rub on the spring side .
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Old 10-17-2005, 04:26 PM   #12
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minimum, not optimum. but yeah, (maximum) performance aside, you'll probably be fine (check the specs). $500 for a fender roll seems a bit "outstanding." a baseball bat, hairdrier adn a LOT of patience would probably get the job done just fine (do a search on it, if you haven't already).
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Old 10-18-2005, 01:18 PM   #13
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^^^ i'm sorry, could you please explain your theory of optiumum performance?

I'm not getting the part of 8" wrapped by 245's is a bad thing, or less optiumum
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Old 10-18-2005, 01:37 PM   #14
DougM
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Quote:
Originally Posted by Lordhowe
^^^ i'm sorry, could you please explain your theory of optiumum performance?

I'm not getting the part of 8" wrapped by 245's is a bad thing, or less optiumum
sure thing,
(for example) the Yokohama AD07 (245/40/17) is listed on their website as accepting rims widths from 8"-9.5". The rim they used for their measurements was an 8.5" rim. I'd suggest the optimum size rim for this tire is likely the 8.5" or maybe a 9" wheel. Why optimum? a smaller rim will pinch the sidewalls, making them not square to the wheel, reducing the contact patch and making the sidewalls more mushy; reducing the turn-in feel and potentially reducing the at-limit grip. (first hand experience here).

for this tire, an 8" wheel is approved and would be fine. but 8.5" or 9" would be better (assuming it was a quality/lightweight wheel). Check the specs on the specific tire you're interested in and try and match the width of their "test" wheel if you can.

http://www.yokohamatire.com/pdf/ADVANNeovaBulletin.pdf
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Old 10-18-2005, 01:58 PM   #15
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Exactly, but one would also have to be able to tell the difference; not saying there isn't one.
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Old 10-18-2005, 02:13 PM   #16
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yeah, normal driving I don't think you would... I noticed with my 245's on a 7.5" wheel (normal driving) but some of that was also probably because the yokes have softer sidewalls than the OE bridgestone tire they replaced.

The guys at the tire shop even mentioned that they weren't going to fit properly when they installed them....
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Old 10-18-2005, 02:47 PM   #17
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They always say that. i guess it realyl depends on how desperate you are to fit that size wheel. stock class autoxers are always trying to squeeze as much tire as possible on their wheels. I have seen STI's running 255 40 17 on the stock 7.5" wheels.
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Old 10-18-2005, 02:55 PM   #18
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You will have a better contact patch with a 235 tire on an 8 inch wide wheel. I have 17x8.5 and will probably stick with 235 tire simply because the predicatable handling will outweigh any extra grip I might get for the 1-2% of the time I might need it.
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Old 03-01-2006, 09:58 AM   #19
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How about 235/40-17 on an 8.5 wheel?
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Old 03-01-2006, 10:20 AM   #20
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Nothing wrong with that.
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Old 03-01-2006, 11:19 AM   #21
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Quote:
Originally Posted by Valhakar
You will have a better contact patch with a 235 tire on an 8 inch wide wheel. I have 17x8.5 and will probably stick with 235 tire simply because the predicatable handling will outweigh any extra grip I might get for the 1-2% of the time I might need it.
If this was true you wouldn't have auto crossers stuffing giant tires on the stock wheels. Like up to 275s on the stock STI 17x8s.
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Old 03-01-2006, 11:20 AM   #22
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Quote:
Originally Posted by JAzad77
Nitto NT 555's. It's costing me $500.
Wow lets backtrack a bit...$500 to roll your fenders to fit 245s????


Excuse me but HAHAHAHAH!!!
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Old 03-01-2006, 01:18 PM   #23
Valhakar
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Quote:
Originally Posted by waktasz
If this was true you wouldn't have auto crossers stuffing giant tires on the stock wheels. Like up to 275s on the stock STI 17x8s.
Lets see, most Autox fairly low speed squirrel cage cornering.

I have 225/50-16 on the stock wheels and the tires were fine for AutoX. First day at Summit Point and they squirmed like hell. They also squirmed like hell at a decent High speed AutoX in Petersberg.

Predicatability > "Igotbigb**lz" tread width in my book.
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Old 03-01-2006, 03:28 PM   #24
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Sure you're right but 235s are not an extreme tire size for a 8 inch wheel.
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Old 03-02-2006, 08:08 AM   #25
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Quote:
Originally Posted by waktasz
Sure you're right but 235s are not an extreme tire size for a 8 inch wheel.
They are about the same + size as my 225 on stock wheels. As I said AutoX they were fine, daily driving they were fine. High speeds they squirmed way too much.
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