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BMW 5-Series (G30) Forum Wheels | Tires | Suspension | Brakes | Chassis 245/35R20 with 285/30R20 ?

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      05-21-2019, 01:32 PM   #1
RDTeam
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245/35R20 with 285/30R20 ?

Hi!
Just interested. Why stock tyre size 245/35 pairs with 275/30? In that case diameter and sidewall of front tires is bigger than rears.
But if we compare 245/35 with 285/30 in tyre calc we will see that this size is more closer to each other. Why so?)

I was using 245/40R20 with 275/35R20 on 7er F01. And bigger sidewall of front wheels are always annoying me. I dont want to repeat that story on my G30 so i'm thinking to use 245/35 pair with 285/30 to make same look for front and rear wheels. Any opinions?

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Last edited by RDTeam; 05-21-2019 at 01:38 PM.. Reason: Title mistake
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      05-21-2019, 03:17 PM   #2
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It depends which wheel you're talking about and how wide it is.

You can only run so wide of a tire based upon how wide your wheel is. So BMW probably didn't go with the 285/30/20 because the width of that is over 11" (11.2" to be exact) whereas the 275/30/20 is only 10.8" wide. Unless your wheels are over 9" wide then I'd stick with the 275s, IMO.

For example: My BMW M Sport 664M wheels are 19x9 (9" wide) and the widest tire you'd ideally want to run is a 275. You could probably fit a 285 but it wouldn't look and fit as good as the 275.

Hopefully that makes sense and helps you out.
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Last edited by CLABRO; 05-21-2019 at 03:34 PM..
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      05-21-2019, 06:12 PM   #3
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I am actually planning to try square 275s 👌even cooler!
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      05-21-2019, 11:17 PM   #4
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Quote:
Originally Posted by Superjackson View Post
I am actually planning to try square 275s 👌even cooler!
what are the sizes of your front rims?
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