Question on Rim/Tire fitment. . .
#1
Question on Rim/Tire fitment. . .
Hey,
I found a really good deal on some Rock Crawler wheels and I am thinking about gettting them. I want to get 15in rims but I am not sure on how wide of rim I should get. I want the same width as the stock rims are. Does anyone know what width that is? Then I am also wanting the same size tire as I had before only obvioisly the rim diameter would be smaller. My tire size right now is a 245x75R16. I do not know really what that means. I have tried using that conversion thing someone posted a while back but that didnt help. I believe they are somewhere around a 31" tire, but still not sure on the width. So basically what I need to know is what the stock rim width is on a 99 XLT 4x4, and what size tire a 245x75 is.
Thanks,
Chris
I found a really good deal on some Rock Crawler wheels and I am thinking about gettting them. I want to get 15in rims but I am not sure on how wide of rim I should get. I want the same width as the stock rims are. Does anyone know what width that is? Then I am also wanting the same size tire as I had before only obvioisly the rim diameter would be smaller. My tire size right now is a 245x75R16. I do not know really what that means. I have tried using that conversion thing someone posted a while back but that didnt help. I believe they are somewhere around a 31" tire, but still not sure on the width. So basically what I need to know is what the stock rim width is on a 99 XLT 4x4, and what size tire a 245x75 is.
Thanks,
Chris
#2
#3
Simple formula (internet calculators suck): First number * second number / 1270 + rim size. No one pays attention when I post this stuff -- they all want it done for them.
245x75x16
First number: 245
Second number: 75
Rim size: 16
245 * 75 = 18375
18375 / 1270 = 14.5 (rounded)
14.5 + 16 = 30.5
So your orignal tires were about 31" tall.
Get 31x10.5x15 tires as your closest fit, and get 15x8 rims. You will end up with a rim with more backspacing (that's just how they come standard now) and so your tires will stick out a bit more, but not so much that you'll mind, and it looks good.
245x75x16
First number: 245
Second number: 75
Rim size: 16
245 * 75 = 18375
18375 / 1270 = 14.5 (rounded)
14.5 + 16 = 30.5
So your orignal tires were about 31" tall.
Get 31x10.5x15 tires as your closest fit, and get 15x8 rims. You will end up with a rim with more backspacing (that's just how they come standard now) and so your tires will stick out a bit more, but not so much that you'll mind, and it looks good.
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