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Discussion Starter #1
How wide of tires can i put on a 9 wide rims, im wanna put 245 45's on da front what would be good to put on the back?
 

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I would have said 275s, I don't think 315s would even fit, would they?
245 is probably the skinniest for a safe road worthy 9" rim. 275 is common for rear, but you could put a 315mm tire out back, but it will be about 3" wider than the rim is... i would go with a 275 or a 305 tops.
 

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haha, do they have to be nittos? why not bfg ta dr2?
ya on a 9" rim they would have to be nittos. the 315 nitto drags are narrower and can fit 9" wide rims. the termi guys do it all the time
 

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ya on a 9" rim they would have to be nittos. the 315 nitto drags are narrower and can fit 9" wide rims. the termi guys do it all the time
good deal. i just wondered because i had 315/35/17 bfgoodrich t/a drag radial 2's on my 17x10.5 AFS Bullits
 

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Discussion Starter #8
what profile would i go wit on da 275 tires to match my 245 45's in da front
 

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245 45 up front
then 275 45 in back 45 is your height (profile)
 

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Discussion Starter #10
i thought it is a different hieght if the tire is wider, someone told me that the profile number is a % of the width.
 

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i thought it is a different hieght if the tire is wider, someone told me that the profile number is a % of the width.
you are correct. go with a 40% sidewall height to a 275mm width
 

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so that will match my 245 45's in da front
do the math:

.45*245=110.25mm
.40*275=110.00mm

.25mm is negligible on a total height of 2*110+wheel height in mm
 

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e.g. 17"=431.79999999999995mm

so 431.79999999999995+220=651.8mm as opposed to 652.05mm.

thats a difference of 0.00984251968503937"

(1 psi tire pressure can account for a greater difference than that)
 

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haha, well thats what im here for! i love math, especially if it has practical uses...
 

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haha, do they have to be nittos? why not bfg ta dr2?
Yes the do. For some reason on another the nitto555 315s seem a little "smaller". Aren't the nittos more friendly too(water/treadwear)? I'm not sure on that one.
 

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well on about 2 dozen track passes and 4k miles, my bfg's were garbage
 

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Discussion Starter #19
Yea I don't know what kinda tires i wanna put on yet, I am a big mich fan, but i just want sumthing that will get me good traction in wet n dry conditions.
 

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if u want wet traction then DR's r out
 
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