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will 245/30/20" tires fit my 20"x8.5" rims

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Old 02-10-2010, 11:59 AM
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08blackoutstang
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Default will 245/30/20" tires fit my 20"x8.5" rims

I am trying to figure out if my 20"x8.5" rims will work with 245/30/20's? thanks guys!
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Old 02-10-2010, 04:55 PM
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Avalanch3
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Yes it will fit, but that is the wrong tire size for the car. It is two inches smaller in diameter than OEM. A more ideal size would be 245 or 255/35r20.
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Old 02-10-2010, 05:19 PM
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pascal
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I run 275/30 on 20s up front (8.5 wide) and the diameter is 26'.
I think it's more than the factory specs...
I'm not sure that 245s will get a whole lot smaller diameter.
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Old 02-10-2010, 09:48 PM
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08blackoutstang
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Originally Posted by pascal
I run 275/30 on 20s up front (8.5 wide) and the diameter is 26'.
I think it's more than the factory specs...
I'm not sure that 245s will get a whole lot smaller diameter.
so you are saying dont go with these tires? and go with 255-275?
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Old 02-10-2010, 09:50 PM
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Originally Posted by Avalanch3
Yes it will fit, but that is the wrong tire size for the car. It is two inches smaller in diameter than OEM. A more ideal size would be 245 or 255/35r20.
thats what they are 245/30/20
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Old 02-10-2010, 10:27 PM
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Avalanch3
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Originally Posted by 08blackoutstang
thats what they are 245/30/20
Having 30 profile with that width and rim size is too low. You need a higher profile tire for that size.
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Old 02-11-2010, 12:15 AM
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08blackoutstang
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Originally Posted by Avalanch3
Having 30 profile with that width and rim size is too low. You need a higher profile tire for that size.
so what would be ideal? for an all around tire... sorry i am super super new to tires.... i dont know what all the numbers mean, all i know is the last two numbers on the end is your rim size.... can someone educate me?
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Old 02-11-2010, 12:50 AM
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Here is an example: 235/55r17

235 = width of tire
55 = profile of tire (how tall the sidewalls are)
17 = the size of the rim you have.

Our stock tire diameter for our cars is 27 inches. You should try and aim to get a tire within about an inch of that size.

Check this tire size calculator, and see if what size is ideal for you.
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Old 02-11-2010, 12:52 AM
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Originally Posted by Avalanch3
Here is an example: 235/55r17

235 = width of tire
55 = profile of tire (how tall the sidewalls are)
17 = the size of the rim you have.

Our stock tire diameter for our cars is 27 inches. You should try and aim to get a tire within about an inch of that size.

Check this tire size calculator, and see if what size is ideal for you.
o o o o o that makes sense, so for my 20x8.5 i should do 245/35/20, or for more tread 245/45/20...
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Old 02-11-2010, 12:58 AM
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Kona6Stang10
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the first number of the tire...is it's width in mm
the second is a percent of the first so say you have 255/35's that means that the sidewall will be 35 percent of the width of the tire....45 will be too much tire....40 may be pushing it.....idealy u want 255/35/20's
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