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09-13-2013, 04:41 PM | #24 |
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09-13-2013, 04:58 PM | #25 |
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Just because you can do it doesnt mean you should. Wait until you hit a big bump and really screw something up down there. I have 235/40/18s on the front of my ARC8's and I even rub on big bumps. IMO running a 255 in the front is asking for trouble.
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09-13-2013, 05:45 PM | #26 |
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Yeah I figured 235 max up front would be best. You think I'd run into any problems with 235's?
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09-13-2013, 07:58 PM | #27 |
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All depends on camber. You run enough camber and you won't rub on anything ever with 255s. He's not the first to run 255s up front, but most people do it with about -2.5 camber up front and have no problems with rubbing ever.
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09-13-2013, 09:15 PM | #28 |
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If you're going to run 255s up front, then why not run 9.5 inch wheels?
Last edited by Delta Goose; 09-14-2013 at 01:01 PM.. |
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09-13-2013, 09:27 PM | #29 |
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You could if you so chose. I believe you'd need a custom wheel though. The Apex series of wheels is specifically designed to max out fitment in the front. However, I dont think when they designed the wheels they were thinking about people going to a 255 inch wheel. Not that you really need it, 255s fit fine on an 8.5 inch wheel. Really a 9 inch wheel would be the most ideal for 255s. I run 285s on my 9.5 inch wheel, i'd never put 255s on it, too much stretch for me.
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09-13-2013, 09:29 PM | #30 | |
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Yes, they are "stretched", but it stiffens up the sidewall to increase response in the tire. Think of performance stretched...not really stanced stretched. |
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09-13-2013, 09:31 PM | #31 |
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Probably varies a bit by brand too. Dunlop said 255 on a 9 inch wheel, but that means nothing for other tires
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09-14-2013, 09:51 AM | #32 |
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A good method that's works more me is take the tires tread width and match it with the rim width. Always seems to match up Great. Example Michelin pss In 235/40/18 are 8.5 tread width. Works great on 8.5 wheel and so on. It's not perfect but this will always get you close to ideal fitment
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09-14-2013, 06:33 PM | #33 | ||
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Michelon's PSS 255/35/18 is rated for an 8.5 to 10 inch wide wheel. You can just look this up right on their website. Part number 07807 http://www.michelinman.com/tire-sele...t/tire-details 8.5" is on the narrow side of their recommendations, but gets quite a bit of tire under the front end of the car. Yes, sidewall stiffness is negatively affected by leaner to the narrow side on wheel width, but I don't feel a significant difference coming from 235/40/18 Dunlop Z1 on the same wheels. They're both lightyears from the runflats. Quote:
Do you have any added camber?
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09-14-2013, 08:27 PM | #34 |
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So is there a definitive answer whether or not I'd be okay with 235/35/18 PSS up front with 8.5" +45 wheels on stock suspension and stock camber?
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09-14-2013, 08:40 PM | #35 |
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Nothing is ever definite... but yes you'd probably be okay. Worst case you'd have to pull the camber pins and slide the struts over a touch.
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09-16-2013, 10:05 AM | #36 |
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I had a 235/40/18 Dunlop Z1 on the front previously without even the camber pin removed, and I autocrossed it several times. I never had any issues. I don't think the PSS runs any wider than the Z1, if anything its the other way around. I wouldn't hesitate at all. Apex themselves say a 235/40/18 street tire is good to go in the front with a stock suspension.
235/35/18 is a short tire. It would work, but you'll add a lot of rake to the car if your rear is a lot wider but also a 35 series tire. However, I still recommend removing the alignment pins as you'll eat your front tires. The car needs camber.
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09-17-2013, 12:45 AM | #38 |
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I have a 235/40/18 Accellera on the front of my ARC8s now, stock suspension. I had some slight rubbing on big bumps for the first 1000 miles but nothing now, these tires have a pretty square sidewall too.
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10-17-2013, 03:35 AM | #39 |
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Hi guys. When your talking about original suspension, is that just the struts or with original control arms? I have original struts but i lowered with springs 60/40 and i have m3 bits in both front and rear.
I have bought Toyo R888 235/35-18 that I'm going to try having up the front and want to buy as wide as possible up rear. I have looking for 265/35-18 but really want to fit 285/30-18. I have read 100 treads about tires fitment but cant se if any of you have the m3 control arms in the front or if you have original high and chassie. Thanks! |
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10-17-2013, 07:29 AM | #40 | |
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The drop you have is the only thing that could be an issue with Arc-8 style offsets in the rear. I've got plenty of space and dont rub at all in the rear with my 285-30-18s. Next change i'm gonna get 295s because i'm not afraid of spacers and a little fender work, but again i'm not dropped. Control arms make no difference in the rear and basically no difference in the front. Not really a concern. I have a full M-3 setup and it didnt change anything for me.
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10-18-2013, 11:33 AM | #41 | |
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10-31-2013, 01:09 PM | #42 |
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10-31-2013, 05:02 PM | #43 |
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Haven't burned up the 285s yet. I'm not totally traction limited at the moment, so I haven't felt the need to try 295s yet.
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11-01-2013, 08:45 AM | #44 |
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you rubbing on 235 has nothing to do with the fact its a 235, but the fact you are running a 40 profile. a 235/40 is TALLER than a 255/35-18.
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