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BMW 3-Series (E90 E92) Forum
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225/45/17 with 245/40/17
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| 12-06-2017, 06:46 AM | #1 |
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Second Lieutenant
 
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Drives: F30 320iA M Sport
Join Date: Nov 2015
Location: Bucharest
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225/45/17 with 245/40/17
Hello people,
I am running this setup on 17" wheels on my e92 325xi. I am using these wheels only for today and tomorrow( roughly 15-20 miles driven on them total). My question is: will this damage the x-drive system? I know these aren't the recommended wheel specs for AWD. Will 20 ~ ish miles damage my X-drive system if i keep driving with them on?
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Bmw e46 320d '04 - Sold
Bmw e46 330ci '01 - Sold Bmw 3-er e90 325i '06 - Sold Bmw 3-er e92 325xi '08 - Sold |
| 12-13-2017, 12:45 PM | #2 |
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Banned
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Drives: Ferrari F430, E92 M3, 335xi
Join Date: Apr 2014
Location: Newton, MA
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Rolling diameter has to be identical on Xdrive, so a square setup is recommended.
In your case, you have .3 " diameter less on one than the other. https://tiresize.com/calculator/ One is also wider than the other, so grip differs also. You also have 9 complete revolutions per mile difference between them, which has to be compensated by the xdrive system somehow.... Not recommended. |
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| 12-19-2017, 03:18 AM | #3 |
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Second Lieutenant
41
Rep 210
Posts
Drives: F30 320iA M Sport
Join Date: Nov 2015
Location: Bucharest
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Yup, that i knew, i was wondering if it would hurt for a day.
It didn't, but the car was jerky so i would not recommend it.
__________________
Bmw e46 320d '04 - Sold
Bmw e46 330ci '01 - Sold Bmw 3-er e90 325i '06 - Sold Bmw 3-er e92 325xi '08 - Sold |
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Appreciate
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