BMW X3 Forum
BMW X3 Forum
Welcome to the ultimate BMW X3 community.
BMW Garage BMW Meets Register Search Today's Posts Mark Forums Read
Post Reply
 
Thread Tools Search this Thread
      05-07-2018, 11:46 AM   #1
arkow
Private First Class
33
Rep
167
Posts

Drives: 2012 X3 35i, 2019 M2 Comp
Join Date: Sep 2015
Location: US

iTrader: (1)

Tire size

Hi,

I am looking to replace my tires on a 2012 X3 35I (19inch wheels). Currently i have non-run flats as i like them better then the run flats that came with the car. They are Yokohama Advan Sport A/S and i really like them, but they installed the same size on all 4 wheels (245 /45 R19), is this ok? as i think original equipment was 245 /45 R19 for the front and 275 /40 R19 for the rear? should i get the wider tires in the rear or keep all 4 the same?

Thank you
Appreciate 0
      05-08-2018, 01:25 AM   #2
Cpt.K
Private First Class
24
Rep
116
Posts

Drives: E91, E82, F80, F85, F87
Join Date: Jun 2017
Location: Huntington Beach, CA

iTrader: (1)

I don't think they all came with a staggered set up. Remember reading something about 275s in the rear as standard for M-package in EU. In US we got 245s all around from the factory, so you should be fine.
Appreciate 0
      05-08-2018, 05:29 AM   #3
BIG_KID
Second Lieutenant
BIG_KID's Avatar
67
Rep
285
Posts

Drives: 2011 X3 28i
Join Date: Dec 2017
Location: Northern indiana

iTrader: (0)

Quote:
Originally Posted by Cpt.K View Post
I don't think they all came with a staggered set up. Remember reading something about 275s in the rear as standard for M-package in EU. In US we got 245s all around from the factory, so you should be fine.
Correct.
Staggered in Europe
Square in US
Appreciate 0
      05-08-2018, 08:08 AM   #4
64-bit
Major
64-bit's Avatar
United_States
309
Rep
1,086
Posts

Drives: 19 Ford Raptor - On Order
Join Date: Mar 2013
Location: Boston, MA

iTrader: (1)

What is the max tires sizes you can install in a square setup like ours in the usa? or you better of buying a new set of tires and rims all together?
__________________
2016 M3, Mineral White, SO Leather, MANUAL - ED 11/26/2015
2013 335i, Blue, M-Sport, Auto w/Sport Trans - ED 06/10/2013
Appreciate 0
      05-08-2018, 06:14 PM   #5
arkow
Private First Class
33
Rep
167
Posts

Drives: 2012 X3 35i, 2019 M2 Comp
Join Date: Sep 2015
Location: US

iTrader: (1)

yep, i confirmed the wheel size with the tire shop, they are all 245 /45 R19 all around, its a good thing as you can rotate them..
Appreciate 0
      05-08-2018, 10:35 PM   #6
tracer bullet
Brigadier General
tracer bullet's Avatar
United_States
2276
Rep
3,460
Posts

Drives: '11 135i , '15 X3 35i
Join Date: May 2011
Location: Saint Paul, MN

iTrader: (1)

Quote:
Originally Posted by arkow View Post
... i think original equipment was 245 /45 R19 for the front and 275 /40 R19 for the rear ...
This is what is on my 2015 M-sport with Style 622 wheels, bought and sold in USA. I think there's some confusion on what is and isn't standard and it just gets repeated. Let's all agree to stop doing that.

Anyhow, are your wheels staggered, that is are the fronts and rears different widths? If so staggered tires is fine too. If the wheels are all the same width you'll want the tires to be as well. You could do some changes but it's a less compelling case for doing so.
Appreciate 0
      05-09-2018, 03:50 PM   #7
arkow
Private First Class
33
Rep
167
Posts

Drives: 2012 X3 35i, 2019 M2 Comp
Join Date: Sep 2015
Location: US

iTrader: (1)

Quote:
Originally Posted by tracer bullet View Post
This is what is on my 2015 M-sport with Style 622 wheels, bought and sold in USA. I think there's some confusion on what is and isn't standard and it just gets repeated. Let's all agree to stop doing that.

Anyhow, are your wheels staggered, that is are the fronts and rears different widths? If so staggered tires is fine too. If the wheels are all the same width you'll want the tires to be as well. You could do some changes but it's a less compelling case for doing so.
The wheels are all the same widths, i had the shop check on this. I am installing all the same tire size on all 4 wheels.

Thanks
Appreciate 0
      05-16-2018, 05:28 PM   #8
Shepherd81
New Member
7
Rep
11
Posts

Drives: X3 F25
Join Date: May 2018
Location: Carinthia

iTrader: (0)

Hi, how does one check if the new rims are 100% fitting?
I didnt change my rims on my cars for decade and stayed with the original ones for a long time.
Now that I have bought an X3 and want to upgrade from 17 inch to 19 inch I am wondering how does one find out if the new rims will fit 100% if they havent been mounted on an X3 before?

For instance my rims are 225/60R17 ; 7.5 ET32

The ones I am looking for are just announced with 245/45/19 in the front and 285/40/19 in the rear.
They were installed on an e65 (BMW 7) before. (If I check BMW 7 infos they can only have following dimensions: 19x9 24 245/45R19 19x10 24 275/40R19 BMW 7)

How do I know if they fit?

I tried that page: https://www.willtheyfit.com
But I want a second opinion.

-Thanks in advance cause I cant create a new thread at this moment.
Appreciate 0
      05-17-2018, 04:08 PM   #9
tracer bullet
Brigadier General
tracer bullet's Avatar
United_States
2276
Rep
3,460
Posts

Drives: '11 135i , '15 X3 35i
Join Date: May 2011
Location: Saint Paul, MN

iTrader: (1)

Width, center bore, and offset are the main things.

Width is a range to suit the tires, for 245 tires it's going to be about 8.5 or 9" (245mm = 9.6 inches, ideally you want the wheel to be a little less than that). For 275 tires it's going to be about 9.5 or 10".

Center bore needs to match. If it's a lot bigger you can use a ring that has the correct inner and outer diameters. If it's slightly bigger you shoudl avoid the wheels as there won't be enough room for a ring. If new wheels are smaller bore, things won't fit to begin with.

245 and 275 tires are fine for width, I have them from the factory. Your aspect ration (45 and 40 are sidewall height as a % of tire width. Again yours match the factory.

So it really comes down to offset. What is it for the new wheels? Too high and they might rub the suspension, too low and they might rub the fender sheet metal. Mine are 38 front and 48 rear, but there is an acceptable range they can be changed within.
Appreciate 0
      05-18-2018, 05:48 AM   #10
Shepherd81
New Member
7
Rep
11
Posts

Drives: X3 F25
Join Date: May 2018
Location: Carinthia

iTrader: (0)

Quote:
Originally Posted by tracer bullet View Post
Width, center bore, and offset are the main things.

Width is a range to suit the tires, for 245 tires it's going to be about 8.5 or 9" (245mm = 9.6 inches, ideally you want the wheel to be a little less than that). For 275 tires it's going to be about 9.5 or 10".

Center bore needs to match. If it's a lot bigger you can use a ring that has the correct inner and outer diameters. If it's slightly bigger you shoudl avoid the wheels as there won't be enough room for a ring. If new wheels are smaller bore, things won't fit to begin with.

245 and 275 tires are fine for width, I have them from the factory. Your aspect ration (45 and 40 are sidewall height as a % of tire width. Again yours match the factory.

So it really comes down to offset. What is it for the new wheels? Too high and they might rub the suspension, too low and they might rub the fender sheet metal. Mine are 38 front and 48 rear, but there is an acceptable range they can be changed within.
Hi tracer bullet,
Thanks for trying to explain it to me. It's not as easy as it might be
So far my X3 has 225/60 R17, 7.5Jx17 ET32 dimensions on all 4 tires (because of All-whee-drive)
I have put eyes on these rims though: https://www.shpock.com/i/WuQ24rF4Zk-Le2Jr/
They were on an e65 (BMW 7) ! I cant tell if they will fit or cause any problems like you mentioned.
Appreciate 0
      05-18-2018, 04:00 PM   #11
tracer bullet
Brigadier General
tracer bullet's Avatar
United_States
2276
Rep
3,460
Posts

Drives: '11 135i , '15 X3 35i
Join Date: May 2011
Location: Saint Paul, MN

iTrader: (1)

Quote:
Originally Posted by Shepherd81 View Post
Hi tracer bullet,
Thanks for trying to explain it to me. It's not as easy as it might be
So far my X3 has 225/60 R17, 7.5Jx17 ET32 dimensions on all 4 tires (because of All-whee-drive)
I have put eyes on these rims though: https://www.shpock.com/i/WuQ24rF4Zk-Le2Jr/
They were on an e65 (BMW 7) ! I cant tell if they will fit or cause any problems like you mentioned.
I'm seeing E65 center bore listed as 72.6mm, same as our X3's, so that is one question out of the way (assuming my research here is correct). This is the size of the hole in the middle of the wheel.

For offset, you will have to ask the seller what kind of wheels they are to find out. I don't recognize them and if I google E65 wheels it doesn't look like a factory option.

Also note that it looks like their rear tire is 285 wide, meaning your offset really needs to be correct to be sure that tire still fits.

My offsets are 38mm F, 48mm rear, stock. If I am correct, it appears factory offset for the E65 7-Series is 24mm front and back. That is a big change (distance in mm). The lower offset would push the wheels further away from the car. My guess is that they will rub and you will not be happy.

Sorry.
Appreciate 0
      05-18-2018, 04:12 PM   #12
Shepherd81
New Member
7
Rep
11
Posts

Drives: X3 F25
Join Date: May 2018
Location: Carinthia

iTrader: (0)

Quote:
Originally Posted by tracer bullet View Post
I'm seeing E65 center bore listed as 72.6mm, same as our X3's, so that is one question out of the way (assuming my research here is correct). This is the size of the hole in the middle of the wheel.

For offset, you will have to ask the seller what kind of wheels they are to find out. I don't recognize them and if I google E65 wheels it doesn't look like a factory option.

Also note that it looks like their rear tire is 285 wide, meaning your offset really needs to be correct to be sure that tire still fits.

My offsets are 38mm F, 48mm rear, stock. If I am correct, it appears factory offset for the E65 7-Series is 24mm front and back. That is a big change (distance in mm). The lower offset would push the wheels further away from the car. My guess is that they will rub and you will not be happy.

Sorry.
OK that is really interesting. I assumed that the further away the tires are from the car the saver it would be not to rub on something

So I was looking for rims with a low offset like > 20mm. I noticed that a lot of original X3 rims have a even higher offset of 42mm though.
So regarding this site: http://www.reifenrechner.at/
the wheels I want to put on are going to stand out on the inner side a bit more......
I am still confused what offset is better for bigger rims cause I want to go from 17 inch to 19 inch that's for sure.
I guess I will continue looking for other rims I am 100% sure they fit on an X3 before I buy something I will regret.
Appreciate 0
      05-19-2018, 10:16 AM   #13
tracer bullet
Brigadier General
tracer bullet's Avatar
United_States
2276
Rep
3,460
Posts

Drives: '11 135i , '15 X3 35i
Join Date: May 2011
Location: Saint Paul, MN

iTrader: (1)

Well, too far in and they will rub the suspension. Too far out and they will rub the metal part of the wheel well (the body of the car).

Stock is 38 front & 48 rear for the M-Sport, we know that works with the wider wheels and tires. I'm sure you could go a little bit different either way, but I don't know how much. Maybe 5mm? Maybe 10? I'm sure that going more than 20 and almost 30 would be too much.

You will have to do some research on what wheels people use and if they had a problem or not. Pay attention to their tire size when you gather information. The best thing to do is have a shop that sells the wheels do a test fitment first, and only sell you something that will work. If you buy online you take a risk of it not working. Unless you stick around the 38 / 48 numbers and don't go too far off of that.

Again, you can vary from 38 / 48, but how far is unknown.

By the way, offset does not matter for 17, 18, 19, or even 20" wheels. It's not the diameter that is important, it's the width of the wheel and the offset that determines if you will rub on something. Assuming of course that you have the right size tires!
Appreciate 0
      05-20-2018, 12:52 PM   #14
Llarry
///M driver
Llarry's Avatar
14478
Rep
486
Posts

Drives: 2022 M3 6-speed
Join Date: Jun 2006
Location: Oregon

iTrader: (0)

Garage List
Quote:
Originally Posted by 64-bit View Post
What is the max tires sizes you can install in a square setup like ours in the usa?
I don't know the max width, but I replaced my 245/45R-19 with 255/45R-19 with no issues.
Appreciate 0
      05-21-2018, 08:34 AM   #15
Opie55
Colonel
1174
Rep
2,892
Posts

Drives: '15 650i Convertible
Join Date: Apr 2018
Location: US

iTrader: (0)

Just to make sure you understand, if you replace wheels with the same width as you have, then you want ones with an offset that is more or less the same as your old wheels. But if you are getting wider wheels, then you need to take that into account, but only HALF of the new width. Offset is the measurement between the mounting flange of the wheel and the center line of the wheel. So if you buy new wheels one inch wider (25mm), half of that inch is on each side of the center line. So you need to consider half of that (12-13mm) when figuring offset. So if your offset now is 30, and you buy wheels one inch wider, the offset on your new wheels should be about 18 or so. As another poster said, you have a range to play with, so 20 would probably be fine.
Appreciate 0
      05-21-2018, 10:33 AM   #16
arkow
Private First Class
33
Rep
167
Posts

Drives: 2012 X3 35i, 2019 M2 Comp
Join Date: Sep 2015
Location: US

iTrader: (1)

Thanks for all the responses, i went with the stock sizes:
245 45 R19 as this was the stock setup, reason i was asking is because these cars came with different wheels and i wasn't sure if mine was wider in the rear..
Appreciate 0
Post Reply

Bookmarks

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off



All times are GMT -5. The time now is 09:40 AM.




xbimmers
Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.
1Addicts.com, BIMMERPOST.com, E90Post.com, F30Post.com, M3Post.com, ZPost.com, 5Post.com, 6Post.com, 7Post.com, XBimmers.com logo and trademark are properties of BIMMERPOST