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Cosmis Racing Wheels thread

Old 01-21-2016, 06:35 PM
  #61  
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Originally Posted by Pearl_Z33 View Post
I'm doing coils in the spring can't wait to drop mine. I have a slight stretch on my tires but the sidewall height is very important. Can mess up the car, learned that the hard way.
I'm sorry I'm a little confused, what do you mean? What kind of issues can happen and what's a safe size to get?
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Old 01-21-2016, 06:55 PM
  #62  
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If sidewall height is wrong, the car will go into limp mode. Go as close as you can to the stock sidewall
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Old 01-21-2016, 07:01 PM
  #63  
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Originally Posted by Pearl_Z33 View Post
If sidewall height is wrong, the car will go into limp mode. Go as close as you can to the stock sidewall
Thanks man I really appreciate the info
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Old 01-21-2016, 10:11 PM
  #64  
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Originally Posted by Nunzio762 View Post
Ok so being a complete noob on wheels and tires (forgive me lol) I just have a few questions if any body has any insight it would be much appreciated. Im pretty much sold on the XT-206r rims but I'm not quite sure about sizing. I would like a happy medium of performance and comfort. I've read through this thread a few times trying to answer my own questions but I just can't get it. I was thinking of the 18x9 for the front and the 18x9.5 for the rear or should I even go offset? I would prefer to stay away from fender rolling or spacers if possible solely because of my lack of knowledge on the two and the fact that there aren't any reputable shops around here that I trust. I have the oem non brembos but maybe in the future would like to upgrade to an aftermarket big brake kit. Any advice would be great thanks.
The sizes offered in this wheels you will need a ton of stretch or to roll you fenders. If you are unwilling to roll, you will need different wheels
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Old 01-22-2016, 11:21 AM
  #65  
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Originally Posted by terrasmak View Post
The sizes offered in this wheels you will need a ton of stretch or to roll you fenders. If you are unwilling to roll, you will need different wheels
I don't really know too much about fender rolling but as far as stretched tires whats I guess the "safest" or most minimal tire I could run... just asking incase anyone has any experience. I love the wheels I just don't want to buy the wrong stuff or mess anything up. Sorry for all the questions
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Old 01-22-2016, 05:27 PM
  #66  
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I run 9.5 and 10.5. No rubbing. Didn't roll fenders.
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Old 01-22-2016, 07:12 PM
  #67  
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Originally Posted by Pearl_Z33 View Post
I run 9.5 and 10.5. No rubbing. Didn't roll fenders.
Do you want a cookie? Your post is 100% useless without offset and tire sizes.m
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Old 01-22-2016, 07:30 PM
  #68  
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245/40 on the front. 275/40 on the rear. Both are slightly stretched. 9.5 is a +15 offset. 10.5 is a +20 offset. Happy?
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Old 01-22-2016, 09:27 PM
  #69  
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Originally Posted by Pearl_Z33 View Post
245/40 on the front. 275/40 on the rear. Both are slightly stretched. 9.5 is a +15 offset. 10.5 is a +20 offset. Happy?
Now look at the sizes and offsets offered for the wheels the person is asking about. You can compare your specs to the ones he is looking at., did your comment help him?
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Old 01-22-2016, 11:08 PM
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Originally Posted by terrasmak View Post
Now look at the sizes and offsets offered for the wheels the person is asking about. You can compare your specs to the ones he is looking at., did your comment help him?
So just curious what about the 17x9
Or the 18x9 all the way around? How stretched would they have to be?
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Old 01-23-2016, 03:49 AM
  #71  
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Id stick with just the 18s just to not mess with the cars SLIP sensor. For a 9 inch rim width wise, I wouldn't stretch that much at all. A 265/40 should work
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Old 01-23-2016, 07:39 AM
  #72  
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Originally Posted by Nunzio762 View Post
So just curious what about the 17x9
Or the 18x9 all the way around? How stretched would they have to be?
18x9 +33, you could do a 245/40-18 front and 275/40-18 rear, no stretch at all. Will look a bit sunk, really not worth it, most people would not waste the money on that size wheel.
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Old 01-23-2016, 09:02 AM
  #73  
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Agreed
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Old 01-26-2016, 01:34 AM
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Ok you you guys think that the bigger offset is better but will require some stretching and fender rolling. Im pretty optimistic but I know nothing about the two. More or less my concern with stretching would be wrecking. Obviously I don't want my car to look stupid but I'd rather play it safe and find the happy medium. I prefer to sacrifice as little comfort as possible while improving the handling/grip as much as possible. I realize that may seem like an impossible feat but that's why I'm asking for your advice. So if I were to go with Pearl's original sizes (except 9.5 instead of the 10.5) what would be the recommended tire size to accommodate the bigger wheel that would be the most reliable/safest stretch I would need. Also I know you said something about sidewall height. Is that where the fender rolling would come into play? I don't mean to be so complicated but like I said I just don't really have the knowledge in this field so I'm sorry for now and in advanced for all upcoming questions. I really do appreciate it.

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Old 01-26-2016, 04:00 AM
  #75  
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Well I run a +15 and +20 offset and I didn't have to roll at all and they don't rub. Clears the brakes no problem. Wheels don't poke out. Fitment is pretty damn good
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Old 01-26-2016, 09:06 AM
  #76  
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Originally Posted by Nunzio762 View Post
Ok you you guys think that the bigger offset is better but will require some stretching and fender rolling. Im pretty optimistic but I know nothing about the two. More or less my concern with stretching would be wrecking. Obviously I don't want my car to look stupid but I'd rather play it safe and find the happy medium. I prefer to sacrifice as little comfort as possible while improving the handling/grip as much as possible. I realize that may seem like an impossible feat but that's why I'm asking for your advice. So if I were to go with Pearl's original sizes (except 9.5 instead of the 10.5) what would be the recommended tire size to accommodate the bigger wheel that would be the most reliable/safest stretch I would need. Also I know you said something about sidewall height. Is that where the fender rolling would come into play? I don't mean to be so complicated but like I said I just don't really have the knowledge in this field so I'm sorry for now and in advanced for all upcoming questions. I really do appreciate it.
Originally Posted by Pearl_Z33 View Post
Well I run a +15 and +20 offset and I didn't have to roll at all and they don't rub. Clears the brakes no problem. Wheels don't poke out. Fitment is pretty damn good

He really needs to pick a different wheel, if you pull the specs up for these they are a bit more aggressive. A lot more aggressive in the rear 18x11 +8 is what is offered.
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Old 01-26-2016, 10:07 AM
  #77  
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For a 9.5 wheel I use a 245/40. Just a little stretch on it and looks fine. Safest size with no stretch is 275/40.
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Old 01-26-2016, 10:46 AM
  #78  
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Originally Posted by Pearl_Z33 View Post
For a 9.5 wheel I use a 245/40. Just a little stretch on it and looks fine. Safest size with no stretch is 275/40.
245/40-18 on a 9.5 is nothing, it's at the upper perfectetly acceptable limits. Same with 275/40-18 on a 10.5 for the rear.
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Old 01-26-2016, 11:33 AM
  #79  
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I run the 275/40 on my 10.5 rear too. Fits fine. No rub. Small stretch
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Old 01-28-2016, 05:05 AM
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Originally Posted by terrasmak View Post
He really needs to pick a different wheel, if you pull the specs up for these they are a bit more aggressive. A lot more aggressive in the rear 18x11 +8 is what is offered.
I've pretty much got my heart set on these wheels. I'm really not trying to be too complicated here I just would like to find a happy medium. So the 18x9 has a 33mm offset and the 18x9.5 has a 10mm offset. Do you think I'd be able to go with a 245/40 tire for the front and a 275/40 for the rear? I see that you guys are pretty well known members and I really appreciate your advice. I know it's probably aggravating that I'm trying to find some imaginary loopholes in this situation but like I said if I can find a medium I'll go with it. Thanks!
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