18x11 +25 CCW C14, doable?
Feb 16, 2009, 02:31 PM
#16
For point of reference the front wheel wells had at most 5mm clearance to the suspension on the inside and about 15mm would put the tire flush to the outside with -2 camber. This was on a 19x9.5" wheel and 275/30-19 tires and I would consider it the closest you could go towards the inside edge with a +35 mm offset.
An 11" wheel would be 1.5" (38mm) wider with no changes so 17mm on each side of the wheel ends up being 12mm interference into the suspension on the inside and sticking out about 2mm on the outside. Change the offset to +18 mm offset and you would have about the same 5mm inner clearance (still would depend on tire type) and it would stick out about 19mm past the edge of the front fender assuming an average sized 305mm tire. I'm not sure it's going to be easy unless you have a wide body kit in the mix. It would seem 285mm tires are about as wide as you can go without sticking out of the wheel wells unless you're doing some custom work.
Keep in mind I'm basing these measurements off of what I have as a baseline and that all manufacturers vary quite a bit.
An 11" wheel would be 1.5" (38mm) wider with no changes so 17mm on each side of the wheel ends up being 12mm interference into the suspension on the inside and sticking out about 2mm on the outside. Change the offset to +18 mm offset and you would have about the same 5mm inner clearance (still would depend on tire type) and it would stick out about 19mm past the edge of the front fender assuming an average sized 305mm tire. I'm not sure it's going to be easy unless you have a wide body kit in the mix. It would seem 285mm tires are about as wide as you can go without sticking out of the wheel wells unless you're doing some custom work.
Keep in mind I'm basing these measurements off of what I have as a baseline and that all manufacturers vary quite a bit.
Last edited by Hiboost; Feb 16, 2009 at 02:34 PM.
Feb 16, 2009, 05:43 PM
#17
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well you heard it from CCW they fit, BUT why? extra weight thats not really needed 9.5-10.5 is more than enough to run some meaty tires. 11 if you want 305s but damn you better have 450whp or more to get those things spinnin.
Feb 17, 2009, 07:42 AM
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For point of reference the front wheel wells had at most 5mm clearance to the suspension on the inside and about 15mm would put the tire flush to the outside with -2 camber. This was on a 19x9.5" wheel and 275/30-19 tires and I would consider it the closest you could go towards the inside edge with a +35 mm offset.
An 11" wheel would be 1.5" (38mm) wider with no changes so 17mm on each side of the wheel ends up being 12mm interference into the suspension on the inside and sticking out about 2mm on the outside. Change the offset to +18 mm offset and you would have about the same 5mm inner clearance (still would depend on tire type) and it would stick out about 19mm past the edge of the front fender assuming an average sized 305mm tire. I'm not sure it's going to be easy unless you have a wide body kit in the mix. It would seem 285mm tires are about as wide as you can go without sticking out of the wheel wells unless you're doing some custom work.
Keep in mind I'm basing these measurements off of what I have as a baseline and that all manufacturers vary quite a bit.
An 11" wheel would be 1.5" (38mm) wider with no changes so 17mm on each side of the wheel ends up being 12mm interference into the suspension on the inside and sticking out about 2mm on the outside. Change the offset to +18 mm offset and you would have about the same 5mm inner clearance (still would depend on tire type) and it would stick out about 19mm past the edge of the front fender assuming an average sized 305mm tire. I'm not sure it's going to be easy unless you have a wide body kit in the mix. It would seem 285mm tires are about as wide as you can go without sticking out of the wheel wells unless you're doing some custom work.
Keep in mind I'm basing these measurements off of what I have as a baseline and that all manufacturers vary quite a bit.
Here are 10.5" with 255's (what he had & wanted for tires). There was almost no room to the inside of his wheels due to the spring collars which a shorter spring will free up .25-.5" of clearance by getting the collars out of the way. So at minimum a .25" inside on this 10.5" setup and another .25" outside would be completely possible. Really aggressive and still couldn't use the correct size tire, but possible. https://www.evolutionm.net/forums/ev...-18x10-5s.html
I know 10's have been done before on 8's & 9's but here's a simular setup on them with the spring swap, etc. I know other guys are running more frontspacing on skinner wheels so a 10.5" is possible on stock body work with the same frontspacing as them. 10's allowed for better tire fitment however and that what this customer wanted. https://www.evolutionm.net/forums/ev...coilovers.html
I don't have an exact answer....best guess is to be over the top something no one else has! Your right about the traction and not needing an 11" but it's really not that much more weight. The tires will cause more of an increase in weight than the wheels would. Barrel thickness isn't much so maybe a 1lb or 2 per inch. The face of the wheel and pad depth has more to do with it than anything. The better selection for a wheel for an 11" wide would be our SP16R which is a revesion of the SP16A. Be a 3" lipped wheel, lightened spokes, and lightened barrel. The lip would be less material then the large pad of the C14 to hit that low of an offset making it lighter. Would come out to 20-22lbs per wheel.
Last edited by ccdan; Feb 17, 2009 at 07:48 AM.
Feb 17, 2009, 08:17 PM
#19
A 9.5" ET30 has about 6.75" backspacing which leaves a bit of space inside and outside even with 275's. 255 to 265 is ideal size tire for 9.5. There will be absolutely no clearance problems with this offset with non-coilovers. 275's really should be on a 10.0" and above.
Depending on coilover spring length and ride height, interference may occur. 150-160mm springs will be OK as the lower spring perches will clear the inside wheel lip as well as the center line of the tire's sidewall as the tire tappers in at the top. 180mm is iffy, and 200mm will most likely contact with 6.75" backspacing. 7.0" backspacing will be very close to the strut and will prevent 200mm length springs.
A 9.5" ET22 (most popular size) has about 6.44" backspacing which is better clearance to the inside and fits about flush with the outside fenders. 10" -10.5" widths will almost always require fender modification/rolling with coilovers and require more neg camber. I personally believe a 10.0" ET25 is the largest generic fitment that will work for a variety of ride heights and suspension systems.
That said, CCW's are fantastic wheels and their price point for what you get is increadible. C14 look great in person. You guys should make an all purpose 9.5 ET22-30 "stock" aftermarket fitment that will fit everyones modifications without issue. Most end users will find this width with 265's plenty of wheel and tire with good looks to boot. If I wasn't sporting RCT4's at a good deal, I would choose C14's in a heartbeat.
Send me a wheel for some test fitment feedback, or a set of four for a full review
Depending on coilover spring length and ride height, interference may occur. 150-160mm springs will be OK as the lower spring perches will clear the inside wheel lip as well as the center line of the tire's sidewall as the tire tappers in at the top. 180mm is iffy, and 200mm will most likely contact with 6.75" backspacing. 7.0" backspacing will be very close to the strut and will prevent 200mm length springs.
A 9.5" ET22 (most popular size) has about 6.44" backspacing which is better clearance to the inside and fits about flush with the outside fenders. 10" -10.5" widths will almost always require fender modification/rolling with coilovers and require more neg camber. I personally believe a 10.0" ET25 is the largest generic fitment that will work for a variety of ride heights and suspension systems.
That said, CCW's are fantastic wheels and their price point for what you get is increadible. C14 look great in person. You guys should make an all purpose 9.5 ET22-30 "stock" aftermarket fitment that will fit everyones modifications without issue. Most end users will find this width with 265's plenty of wheel and tire with good looks to boot. If I wasn't sporting RCT4's at a good deal, I would choose C14's in a heartbeat.
Send me a wheel for some test fitment feedback, or a set of four for a full review
Feb 18, 2009, 11:21 AM
#20
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A 9.5" ET30 has about 6.75" backspacing which leaves a bit of space inside and outside even with 275's. 255 to 265 is ideal size tire for 9.5. There will be absolutely no clearance problems with this offset with non-coilovers. 275's really should be on a 10.0" and above.
Depending on coilover spring length and ride height, interference may occur. 150-160mm springs will be OK as the lower spring perches will clear the inside wheel lip as well as the center line of the tire's sidewall as the tire tappers in at the top. 180mm is iffy, and 200mm will most likely contact with 6.75" backspacing. 7.0" backspacing will be very close to the strut and will prevent 200mm length springs.
A 9.5" ET22 (most popular size) has about 6.44" backspacing which is better clearance to the inside and fits about flush with the outside fenders. 10" -10.5" widths will almost always require fender modification/rolling with coilovers and require more neg camber. I personally believe a 10.0" ET25 is the largest generic fitment that will work for a variety of ride heights and suspension systems.
That said, CCW's are fantastic wheels and their price point for what you get is increadible. C14 look great in person. You guys should make an all purpose 9.5 ET22-30 "stock" aftermarket fitment that will fit everyones modifications without issue. Most end users will find this width with 265's plenty of wheel and tire with good looks to boot. If I wasn't sporting RCT4's at a good deal, I would choose C14's in a heartbeat.
Send me a wheel for some test fitment feedback, or a set of four for a full review
Depending on coilover spring length and ride height, interference may occur. 150-160mm springs will be OK as the lower spring perches will clear the inside wheel lip as well as the center line of the tire's sidewall as the tire tappers in at the top. 180mm is iffy, and 200mm will most likely contact with 6.75" backspacing. 7.0" backspacing will be very close to the strut and will prevent 200mm length springs.
A 9.5" ET22 (most popular size) has about 6.44" backspacing which is better clearance to the inside and fits about flush with the outside fenders. 10" -10.5" widths will almost always require fender modification/rolling with coilovers and require more neg camber. I personally believe a 10.0" ET25 is the largest generic fitment that will work for a variety of ride heights and suspension systems.
That said, CCW's are fantastic wheels and their price point for what you get is increadible. C14 look great in person. You guys should make an all purpose 9.5 ET22-30 "stock" aftermarket fitment that will fit everyones modifications without issue. Most end users will find this width with 265's plenty of wheel and tire with good looks to boot. If I wasn't sporting RCT4's at a good deal, I would choose C14's in a heartbeat.
Send me a wheel for some test fitment feedback, or a set of four for a full review
Feb 18, 2009, 06:13 PM
#21
Great to know. Can you alter your pad thickness by 1mm increments or only by 5mm? With a more conservative width and offset, won't the three piece older wheel interfere with the brake caliper and the one piece forged would be a better way to go for most as it typically offers mover clearance from the caliper face to the inside spokes?
Mar 19, 2010, 07:59 PM
#26
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i have been in talks with dan and others about the 18x11 thing. i think i am going to go for it my car makes 19x9.5s with a 22 offset and 275s look like spares with how far i have pulled the fenders and quarters since i was racing all last year with many combos most of which were 18x10 with low offsets and 295 30 18s
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