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      08-13-2019, 08:39 PM   #1
Llep64
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Need advice

Hello!! So I have a 2017 320 with 225/45/18, I have the chance to get some 235/40/18 and 255/40/18 back , would this work? I lowered tha car with sport springs and not sure ...
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      08-13-2019, 09:59 PM   #2
alohasurftoad
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Quote:
Originally Posted by Llep64 View Post
Hello!! So I have a 2017 320 with 225/45/18, I have the chance to get some 235/40/18 and 255/40/18 back , would this work? I lowered tha car with sport springs and not sure ...
are your 397's staggered widths? or are they 18x8 square and you're planning to put staggered tire sizes on 8"? if it's the latter, 255 is not recommended on 8" wide.

also, 255/40/18(26") is oem size but 235/40/18 is 25.4" so it'll have a bit of forward rake to have even wheel gaps, which is not necessarily bad thing and much better than a reverse rake scenario.

i prefer tire sizes closer to oem diameter.
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      08-13-2019, 10:46 PM   #3
Llep64
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Quote:
Originally Posted by alohasurftoad View Post
Quote:
Originally Posted by Llep64 View Post
Hello!! So I have a 2017 320 with 225/45/18, I have the chance to get some 235/40/18 and 255/40/18 back , would this work? I lowered tha car with sport springs and not sure ...
are your 397's staggered widths? or are they 18x8 square and you're planning to put staggered tire sizes on 8"? if it's the latter, 255 is not recommended on 8" wide.

also, 255/40/18(26") is oem size but 235/40/18 is 25.4" so it'll have a bit of forward rake to have even wheel gaps, which is not necessarily bad thing and much better than a reverse rake scenario.

i prefer tire sizes closer to oem diameter.
Quote:
Originally Posted by alohasurftoad View Post
Quote:
Originally Posted by Llep64 View Post
Hello!! So I have a 2017 320 with 225/45/18, I have the chance to get some 235/40/18 and 255/40/18 back , would this work? I lowered tha car with sport springs and not sure ...
are your 397's staggered widths? or are they 18x8 square and you're planning to put staggered tire sizes on 8"? if it's the latter, 255 is not recommended on 8" wide.

also, 255/40/18(26") is oem size but 235/40/18 is 25.4" so it'll have a bit of forward rake to have even wheel gaps, which is not necessarily bad thing and much better than a reverse rake scenario.

i prefer tire sizes closer to oem diameter.
Is 18*8 square... so you wouldn't recommend it? Should I stick with the 225/45/18?
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      08-13-2019, 11:20 PM   #4
alohasurftoad
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Yes oem 225/45/18

or 235/45/18, slightly wider and taller

or 245/40/18, slightly shorter and 20mm wider
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      08-14-2019, 06:33 AM   #5
Llep64
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Quote:
Originally Posted by alohasurftoad View Post
Yes oem 225/45/18

or 235/45/18, slightly wider and taller

or 245/40/18, slightly shorter and 20mm wider
Thanks so much.. so 245/40/18 would work?
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      08-14-2019, 08:25 AM   #6
alohasurftoad
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https://f30.bimmerpost.com/forums/sh...Mmmm+new+tires

See link above for 245/40/18 on style 397
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      08-14-2019, 08:40 AM   #7
Llep64
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Quote:
Originally Posted by alohasurftoad View Post
https://f30.bimmerpost.com/forums/sh...Mmmm+new+tires

See link above for 245/40/18 on style 397
Thanks!! It looks like 245/40/18 it is!
I have sport springs in mine, but think I have enough clearance.
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