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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 > Stock E90 325i to 18 M3 Wheels



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      12-01-2005, 03:07 PM   #1
macknificent
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2006 325i  [0.00]
Stock E90 325i to 18 M3 Wheels

I know my stock wheels/tires on my E90 are as follows:

205-55-16 [34mm offset]

and I'm going to get the 18" E46 M3 Staggered Setup which is:

225-45-18 [47mm offset?]
255-40-18 [26mm offset?]

I used the calculator and it says that my speedo will read 63mph @ 60mph. I already know that BMWs tend to have inaccurate speedos to begin with. I'm leasing, so obviously I have a concern if there is a 1.05-1.08% difference (it adds up).

Anyone else have speedo/odometer problems when switching to bigger wheels (especially if you have the M3 setup)?
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      12-01-2005, 05:10 PM   #2
Mark
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Quote:
Originally Posted by macknificent
I know my stock wheels/tires on my E90 are as follows:

205-55-16 [34mm offset]

and I'm going to get the 18" E46 M3 Staggered Setup which is:

225-45-18 [47mm offset?]
255-40-18 [26mm offset?]

I used the calculator and it says that my speedo will read 63mph @ 60mph. I already know that BMWs tend to have inaccurate speedos to begin with. I'm leasing, so obviously I have a concern if there is a 1.05-1.08% difference (it adds up).

Anyone else have speedo/odometer problems when switching to bigger wheels (especially if you have the M3 setup)?
I wouldnt really worry about it since a 1% difference isnt anything statistically significant, you'd probably see more variance on how much air you put in the tires.
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