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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Technical Forums > Wheels and Tires Forum Sponsored by The Tire Rack > Idk if i went to aggressive



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Wheel offset calculator courtesy of BimmerPost.com. You may use this calculator to calculate what tire sizes you might need if you upgrade your tires, or what wheel sizes/offsets are compatible with your car.
    Current Wheel Width  inches             Current Wheel Offset  mm.
         New Wheel Width  inches                  New Wheel Offset  mm.
 
TIRE WIDTH
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ORIGINAL TIRES
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NEW TIRES
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Based on your stock wheel setup, your new wheel will have:
Original Tires Diameter (in.)
      New Tires Diameter (in.)
  Difference in diameter (in.)
           Percent Difference %
                     
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      07-12-2013, 09:52 PM   #1
Sb335i
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Idk if i went to aggressive

So heres the problem i made a set of bbs rs wheels. Originally they were 16x8 et 11. I ordered new barrels and lips, a 4.5 inch rear lip and a 6.5 inch barrel. So now the wheels are 18x11 i wanted to fit that on my e90 sedan. But having trouble what tire i should run, i tried a 245/40/18 and it was way too chunky for how much poke i had. What would be a good tire i should run nxt. Im trying to fit a 225/35/18 on it now but nobody can bead it. I don't know the offset so cause I'm an idiot. But if u want to do the math feel free. If any one can shine some light in my dilemma please feel free.
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      07-13-2013, 10:30 AM   #2
hawaiianeze
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Quote:
Originally Posted by Sb328i View Post
So heres the problem i made a set of bbs rs wheels. Originally they were 16x8 et 11. I ordered new barrels and lips, a 4.5 inch rear lip and a 6.5 inch barrel. So now the wheels are 18x11 i wanted to fit that on my e90 sedan. But having trouble what tire i should run, i tried a 245/40/18 and it was way too chunky for how much poke i had. What would be a good tire i should run nxt. Im trying to fit a 225/35/18 on it now but nobody can bead it. I don't know the offset so cause I'm an idiot. But if u want to do the math feel free. If any one can shine some light in my dilemma please feel free.
I'm better with 19's than 18's but I'd try 265/35/18, im not going to try to calculate the offset but unless its really low it shouldn't be too hard to fit
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      07-14-2013, 08:57 AM   #3
CombatNinja
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If any one can shine some light in my dilemma please feel free.

Here is some light to shine on your dilemma: trying to fit a 225mm tire on an 11" wide wheel is retarded. Take your cool stance bro car and throw it in a dumpster.
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      07-14-2013, 09:18 AM   #4
Timujin
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18X11 dayum that is wide.
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      07-14-2013, 09:56 AM   #5
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Here is some light to shine on your dilemma: trying to fit a 225mm tire on an 11" wide wheel is retarded. Take your cool stance bro car and throw it in a dumpster.
You're a douche, just thought you should know.

Edit: Actually, you probably already know.
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      07-15-2013, 01:54 PM   #6
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Measure the backspacing and convert it to wheel offset. You can plug in all your measurements on this calculator and it will tell you what offset your wheels are.
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      07-16-2013, 01:49 PM   #7
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225 on an 11" wheel is dangerous. Well outside recommended wheel width of a 225/35.
That is 2" outside the suggested width. There is no wonder why you can't get it to bead.
I surprised any reputable tire shop would even try.

An 11" wheel is wide and you should be looking at a 275. On an 11" wheel a 275 will show stretch.
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      07-16-2013, 01:53 PM   #8
Snaggletooth
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Here is some light to shine on your dilemma: trying to fit a 225mm tire on an 11" wide wheel is retarded. Take your cool stance bro car and throw it in a dumpster.
LOL LOL I don't care if what he said was douchy, you're trying to do something incredibly unsafe that puts other drivers at risk due to your vanity. If you didn't make dumb suggestions, you wouldn't get flamed haha.
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      07-18-2013, 07:15 AM   #9
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Your gonna have to measure the back spacing, and convert it to offset as stated above. then most likely run 4deg of camber and shave/roll the crap out of the fenders. 245/35 is the smallest tire ive been able to fit on an 11" wide wheel. 225/35s are hard to get on a 10" wide wheel. pics would help.

Also if you really need a 225 to go on try going to a taller sidewall(225/40), its makes the stretch a little easier while still providing similar clearances
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