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Old 03-26-2014, 02:11 PM   #551
_davin
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Have you guys considered making an 18x11 +20 in 5x114/5x100? I know there are some autox guys who would be interested.
There's no way the benefit of that much wider a tire would outweigh that much extra combined weight, at least not for autocross.
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Old 03-26-2014, 02:21 PM   #552
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There's no way the benefit of that much wider a tire would outweigh that much extra combined weight, at least not for autocross.


Practical experience has taught me and many others differently.

Last edited by subydude; 03-26-2014 at 03:21 PM.
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Old 03-26-2014, 03:38 PM   #553
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Originally Posted by subydude View Post


Practical experience has taught me and many others differently.
Actually he autocrosses, so he, too, might know what he's talking about. That size seems overkill for autox, but seems good for track days. I can't imagine it being lightweight.
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Old 03-26-2014, 03:51 PM   #554
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Light weight is good, but going lighter weight at the expense of tire/rim width is not good. The only reason to use narrow rims is if you're in a class that doesn't allow modifications to the fenders or limits wheel width. Once you get to a place where you're limited by how wide you want to make the car it doesn't really matter (at autox) how heavy the wheels are (within reason...can't be made out of concrete) as mechanical grip outweighs pretty much everything else. I'm happy running heavier 18x11's, but if someone were to make a reasonably priced wheel in that size that weighs 20-22lbs then I'd be happy to shed some more rotating mass.

However, making a sweeping comment that weight (of all things) would outweigh the benefits of wider tires shows a lack of experience in this arena. It's along the same lines as saying "wings and splitters aren't worth it since they don't work at those speeds". Experience > forum knowledge
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Old 03-26-2014, 04:08 PM   #555
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Allow some clarification: Mach V making an 18x11 is not going to be light. Also, if you're racing, why are you going with 18" wheels? 17" has been seen as optimal, plus more practical for tire replacement. I cannot imagine that there are enough people that can actually USE 18x11, especially at a +20 offset. Being a former 2001 2.5 RS coupe, 2005 STI, 2008 Forester XT, 2011 WRX sedan and current 2013 BRZ owner, I'm well aware of weight and fitment. 18x11 for a Subaru from Mach V at +20 is a bit... of everything. Not even a sweeping comment, just observation from years of... observing. You can feel free to lump me in with "Forum Knowledge", but I actually do show up and help at autox events and enjoy learning the technical stuff. Nowhere have I seen anyone gushing for your wheel specs.
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Old 03-26-2014, 04:18 PM   #556
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I didn't say anything about skinny tires. I was referring to the Awesomes. Although I was thinking more compared to the 17x9s, I can see it being advantageous compared to the 18"s(after some serious body work). 22lbs is not light lol. And like Chano said, I've no doubt it's better on a track but I've no idea where you came up with "weight doesn't matter" for autocross. But I'm no expert, maybe you're right.

Serious question, since we're on the subject: assuming same model and tread width tire, could the lower profile of an 18" tire on a heavier wheel be advantageous over the flex in the larger sidewall of a 17", or should it be stiff enough in high performance tires not to matter?
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Old 03-26-2014, 04:35 PM   #557
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Originally Posted by chanomatik View Post
Allow some clarification: Mach V making an 18x11 is not going to be light. Also, if you're racing, why are you going with 18" wheels? 17" has been seen as optimal, plus more practical for tire replacement. I cannot imagine that there are enough people that can actually USE 18x11, especially at a +20 offset. Being a former 2001 2.5 RS coupe, 2005 STI, 2008 Forester XT, 2011 WRX sedan and current 2013 BRZ owner, I'm well aware of weight and fitment. 18x11 for a Subaru from Mach V at +20 is a bit... of everything. Not even a sweeping comment, just observation from years of... observing. You can feel free to lump me in with "Forum Knowledge", but I actually do show up and help at autox events and enjoy learning the technical stuff. Nowhere have I seen anyone gushing for your wheel specs.
It wouldn't be light in comparison to the high dollar stuff, but it'd be lighter than the cheap 18x11's I have now most likely

If you enjoy learning the technical stuff and say you help out at autox then you would know why 18's and not 17's. And I'm not even talking about the r-comp classes, even in the street classes 18" rims are popular since they generally offer more gearing options and better response due to lower sidewalls (assuming the car can run them of course). Are there cars where 17 or even 15 is better? Sure are, but move to an r-comp class and you'll see cars with 13/15/18 a LOT more often than 17. So, who are you saying has seen 17's are optimal?

I'm surprised you think +20 is a low offset for that rim since you know about fitment. When you actually put it on 4 of the 5 cars you listed above it's as far inbound as you can go without rubbing on the body. The BRZ is blessed with more inbound clearance and could run something in the +40 range but the older chassis, not so much.

These are observations from years of doing

Go to Solo Nationals and you'll hear other Subaru owners who want those wheels. Going to a local event in Alaska...yeah I can see why no one was asking for that wheel. Or the fact when they ask about sizes of wheels that aren't "normal" they get people telling them it won't work, even though they're already doing it
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Old 03-26-2014, 04:45 PM   #558
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Originally Posted by subydude View Post
It wouldn't be light in comparison to the high dollar stuff, but it'd be lighter than the cheap 18x11's I have now most likely

If you enjoy learning the technical stuff and say you help out at autox then you would know why 18's and not 17's. And I'm not even talking about the r-comp classes, even in the street classes 18" rims are popular since they generally offer more gearing options and better response due to lower sidewalls (assuming the car can run them of course). Are there cars where 17 or even 15 is better? Sure are, but move to an r-comp class and you'll see cars with 13/15/18 a LOT more often than 17. So, who are you saying has seen 17's are optimal?

I'm surprised you think +20 is a low offset for that rim since you know about fitment. When you actually put it on 4 of the 5 cars you listed above it's as far inbound as you can go without rubbing on the body. The BRZ is blessed with more inbound clearance and could run something in the +40 range but the older chassis, not so much.

These are observations from years of doing

Go to Solo Nationals and you'll hear other Subaru owners who want those wheels. Going to a local event in Alaska...yeah I can see why no one was asking for that wheel. Or the fact when they ask about sizes of wheels that aren't "normal" they get people telling them it won't work, even though they're already doing it
I do hear that things are different here in Alaska because EVERYONE goes with 17". Tires are cheaper, wheels are lighter and then rotational mass. Generally a low offset makes it harder to find wheels that clear Brembos and are also lightweight. I'm not saying +20 wouldn't be awesome, but they seem to come with clearance issues.

I would LOVE to go to a National event! One day. I appreciate the constructive feedback. I don't think that Mach V wheels in 18x11 +20 wouldn't be "awesome" (), but I just don't see enough cars that could use them.
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Old 03-26-2014, 04:46 PM   #559
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I didn't say anything about skinny tires. I was referring to the Awesomes. Although I was thinking more compared to the 17x9s, I can see it being advantageous compared to the 18"s(after some serious body work). 22lbs is not light lol. And like Chano said, I've no doubt it's better on a track but I've no idea where you came up with "weight doesn't matter" for autocross. But I'm no expert, maybe you're right.

Serious question, since we're on the subject: assuming same model and tread width tire, could the lower profile of an 18" tire on a heavier wheel be advantageous over the flex in the larger sidewall of a 17", or should it be stiff enough in high performance tires not to matter?
22lbs is light to me until you pay a lot more money I've seen some Volks around 18lbs in 18x11 flavor but the RPF1's are still around 20 for the 10.5's. For an 11, 22lbs would be great if it's under $500 a wheel.

Wheel weight doesn't matter as much as tire width. If you can loose it, great, but heavier wheels with wider tires will be faster than light wheels with narrower tires within reason. In the grand scheme it's not nearly as big as people make it out to be. If you compared a 15 lbs 17x10 vs a 30 lbs 18x11 then yes you'll see some acceleration differences, but your cornering forces will still be higher on the 18's since you're running and properly supporting the wider tire.

Serious answer, in general yes the 18" will be faster as long as the total weight doesn't go up by a stupid amount. Something to consider, 17" tires with tall sidewalls generally weigh more than 18" tires with short sidewalls. So while you gain a few lbs in rim weight, the tire can (sometimes) offset this. Most people choose the 18's since there are more tire sizes and better gearing options. Like I noted above, there are cars that are better with 17's. In the world of r-comps though, it's much more common to jump from 15 to 18.
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Old 03-26-2014, 06:28 PM   #560
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Wicked Awesome with the stock Dunlop S600 in a 245 40 18.
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Old 03-27-2014, 09:03 AM   #561
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Wicked Awesome with the stock Dunlop S600 in a 245 40 18.
Looks great! Now get that car cleaned up and get us some "golden hour" (hour before sunrise or after sunset) shots.

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Old 04-01-2014, 11:01 AM   #562
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Gold 17x9" Awesome, 255/40R17.

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Old 04-10-2014, 02:40 PM   #563
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Old 04-19-2014, 09:03 AM   #564
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I'd love to see these on the 2015. I think that would sell me on the new body style.
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Old 04-19-2014, 09:53 PM   #565
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do you have a pic of the black or red awesome stickers for the spokes? curious what they look like can only see a couple colors on the site
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Old 04-22-2014, 09:23 PM   #566
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do you have a pic of the black or red awesome stickers for the spokes? curious what they look like can only see a couple colors on the site




Also the black decals are on the 2007 wagon two posts above yours.

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Old 04-23-2014, 09:13 PM   #567
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thanks! here is a good profile of your wheels!
WRX-32 by danieldmochowski, on Flickr
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Old 04-25-2014, 09:28 AM   #568
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thanks! here is a good profile of your wheels!
Nice job.

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Old 04-27-2014, 06:54 AM   #569
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This is my ladies ride. Stage 2+ 2011 WRX with Eibach pro-kit springs, Perrin 25mm f, 22mm r bars and....

Mach V Wicked Awesomes!! wrapped in STi take-off 245/40-18 Dunlops
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Old 04-29-2014, 06:24 PM   #570
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03 wrx stock struts and lowering springs, don't know which brand springs as the original owner couldnt remember. will a 245/45/17 require fender rolling? Or should i go with a 235/45? I have no problem doing so if needed, just kinda wanted to have this done before i order my tires and they get here
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Old 04-29-2014, 07:48 PM   #571
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^^^ 245/45-17 is too tall for your car anyway. Get 235/45-17. Mite need to roll a little, easy to do.
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Old 05-02-2014, 12:28 PM   #572
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^^^ 245/45-17 is too tall for your car anyway. Get 235/45-17. Mite need to roll a little, easy to do.
I'd do 245/40/17. If he did a 235/45 it would still be as tall as a 245/45
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Old 05-02-2014, 12:30 PM   #573
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I'd do 245/40/17. If he did a 235/45 it would still be as tall as a 245/45
No, it wouldn't.
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Old 05-02-2014, 12:51 PM   #574
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I'd do 245/40/17. If he did a 235/45 it would still be as tall as a 245/45
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No, it wouldn't.
235/45R17 is 8mm shorter than 245/45R17, generally, but will alter slightly depending on which tires are chosen.
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Old 05-02-2014, 07:01 PM   #575
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I'd do 245/40/17. If he did a 235/45 it would still be as tall as a 245/45
It looks like you dont know how tire sizing works. The second # is the sidewall height as a percentage of the tire width, which is in mm. There will be dimension variations by manufacturer.
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