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11-04-2008, 08:50 AM
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#1
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Banned
Join Date: Mar 2007
Location: coumbia. nj
Posts: 1,317
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tire question...
i have 255 55 18s and i was wondering if 245 40 18s would fit my rim?
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11-04-2008, 08:51 AM
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#2
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Admin.
Join Date: Aug 2005
Location: Hamilton, NJ
Posts: 20,149
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Probably. What size is the rim?
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The looser the waistband, the deeper the quicksand. Or so I have read.
Feather-light suspension, Konis just couldn't hold. I'm so glad I took a look inside your showroom doors.
Hey everybody, it's good to have you on the Baba-too-da-ba-too-ba-ba-buh-doo-ga-ga-bop-a-dop
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11-04-2008, 08:54 AM
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#3
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Banned
Join Date: Mar 2007
Location: coumbia. nj
Posts: 1,317
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18x9 or 18x10 idk.
the ones the 245 40 are on is 18x9
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11-04-2008, 09:02 AM
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#4
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Admin.
Join Date: Aug 2005
Location: Hamilton, NJ
Posts: 20,149
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A 245/40/18 requires 8.0"-9.5" wide rims. OD is 25.71"
A 255/55/18 requires 7.0"-9.0" wide rims. OD is 29.04"
Big height difference.
http://www.1010tires.com/TireSizeCal...?action=submit
__________________
Vent Windows Forever!
The looser the waistband, the deeper the quicksand. Or so I have read.
Feather-light suspension, Konis just couldn't hold. I'm so glad I took a look inside your showroom doors.
Hey everybody, it's good to have you on the Baba-too-da-ba-too-ba-ba-buh-doo-ga-ga-bop-a-dop
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11-04-2008, 09:07 AM
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#5
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Banned
Join Date: Mar 2007
Location: coumbia. nj
Posts: 1,317
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my rim with the 255 55 is a 18x9.5
the height will only throw off my speedo..no?
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11-04-2008, 09:10 AM
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#6
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Admin.
Join Date: Aug 2005
Location: Hamilton, NJ
Posts: 20,149
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Assuming it is corect with the 255/55/18, yes, it will whack it pretty good.
At 60 mph it will read 67.7 mph
Speedometer Difference: 12.95% too fast
Might look funny too. Could also whack ABS and/or traction contol, if equipped.
Are you buying thses tires new or is this some deal on used tires?
__________________
Vent Windows Forever!
The looser the waistband, the deeper the quicksand. Or so I have read.
Feather-light suspension, Konis just couldn't hold. I'm so glad I took a look inside your showroom doors.
Hey everybody, it's good to have you on the Baba-too-da-ba-too-ba-ba-buh-doo-ga-ga-bop-a-dop
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11-04-2008, 09:11 AM
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#7
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Banned
Join Date: Mar 2007
Location: coumbia. nj
Posts: 1,317
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well, my speedo is off as it is. at 50 im reading 60 lol
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11-04-2008, 09:52 AM
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#8
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Join Date: Jul 2004
Location: West Long Branch
Posts: 13,598
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I concur with Scott. It seems that the tires you have on there are already off, so they dont seem to be correct.
What kind of car is this going on? And for a 9.5 inch rim, a 245 will look silly.
__________________
2/20/2013: They Day the ****s Stopped
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11-04-2008, 10:29 AM
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#9
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Join Date: Apr 2008
Location: Delran
Posts: 6,785
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whats your stock size? take it from there and use the 1 up, + 10, - 10 formula.
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11-04-2008, 01:41 PM
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#10
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Sliderule / Moderator
Join Date: Oct 2004
Location: Catawissa PA
Posts: 2,294
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Quote:
Originally Posted by BigAls87Z28
I concur with Scott. It seems that the tires you have on there are already off, so they dont seem to be correct.
What kind of car is this going on? And for a 9.5 inch rim, a 245 will look silly.
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Would you also need to be concerned with getting a good bead? the chart I referenced shows a 9.5 wide rim should have a 265/275 W tire.
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1) Build it
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11-04-2008, 01:55 PM
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#11
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Admin.
Join Date: Aug 2005
Location: Hamilton, NJ
Posts: 20,149
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Sliderule, I tend to look at the recommended rim widths for a given tire size. MRW can vary based on aspect ratio (40) as well as section width (245). For instance:
245/30/20 7.0-8.0
245/50/16 7.0-8.5
245/45/17 7.5-9.0
245/40/17 8.0-9.5
__________________
Vent Windows Forever!
The looser the waistband, the deeper the quicksand. Or so I have read.
Feather-light suspension, Konis just couldn't hold. I'm so glad I took a look inside your showroom doors.
Hey everybody, it's good to have you on the Baba-too-da-ba-too-ba-ba-buh-doo-ga-ga-bop-a-dop
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11-04-2008, 03:28 PM
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#12
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Banned
Join Date: Mar 2007
Location: coumbia. nj
Posts: 1,317
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its on my durango..the tire it came with was 255 55 18
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11-04-2008, 03:31 PM
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#13
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Admin.
Join Date: Aug 2005
Location: Hamilton, NJ
Posts: 20,149
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I'm, confused. What vehicle is getting the new tire size? What is the OE size on that vehicle?
__________________
Vent Windows Forever!
The looser the waistband, the deeper the quicksand. Or so I have read.
Feather-light suspension, Konis just couldn't hold. I'm so glad I took a look inside your showroom doors.
Hey everybody, it's good to have you on the Baba-too-da-ba-too-ba-ba-buh-doo-ga-ga-bop-a-dop
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11-04-2008, 10:07 PM
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#14
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Banned
Join Date: Mar 2007
Location: coumbia. nj
Posts: 1,317
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idk oe size. the original rims r 15s but idk original size. it has american racing 18s
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11-05-2008, 01:40 PM
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#15
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Join Date: Apr 2008
Location: Delran
Posts: 6,785
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look in your door jambs for the oe tire size. then you can calculate what tire size you should have from there.
for example
195 75 14 > 205/65/15 > 215/55/16 > 225/45/17 and so on
use the +10, 10 , +1 formula
every inch you go up in rim size increase the width by 10 and drop the profile by 10.
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11-06-2008, 02:30 AM
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#16
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Join Date: Jul 2004
Location: West Long Branch
Posts: 13,598
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255/55-18 sounds a little small for a durango.
Depending on the year, Durango has a BUNCH of different sizes from 235/75-15 to 31x10.5x15. The newwer ones are pretty common but big.
I want to say that 255/60-18 is probably the size you are looking for. 265/70-15 is a common size as well for the older ones after they stopped putting the 31's on it.
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2/20/2013: They Day the ****s Stopped
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