11-08-2021, 01:36 AM | #1 |
Enlisted Member
9
Rep 34
Posts |
M40i squared setup question, cant find a definite answer.
I'm sure this have been answered somewhere, but just want to make super sure before ordering the tires.
Can I order 4x 245/45 R20 winter tires instead of staggered ones? Will 245/45 fit on the back rims that have 275/40 OEMs? |
11-08-2021, 04:02 AM | #3 |
Enlisted Member
9
Rep 34
Posts |
Rik the car will come with summer tires, I want to buy a square winter set, same size as the front for all four wheels (245/45 r20). The rear rims are wider (9.5in) so I'm not sure if the front tire size will fit or not.
|
Appreciate
0
|
11-08-2021, 05:07 AM | #4 |
A family of bimmers
2796
Rep 7,755
Posts |
They will fit but because of the stretch they will be shorter in diameter potentially causing issues with the AWD system.
__________________
2018 PB/Black G01 X3M40i | 699M | ZDA | ZPP | ZPX | Maxton front lip | X3M vents | 15mm Spacers | Diamond G20 style grills |
Appreciate
0
|
11-08-2021, 12:13 PM | #5 |
Second Lieutenant
230
Rep 290
Posts
Drives: '22 X4 M40i / '24 X5 M60i
Join Date: Jun 2009
Location: Vancouver, BC
|
Look what is BMW approved cold weather winter set: 20" Double Spoke 699M, Orbit Grey P/N 36110003064
Pirelli® Scorpion Winter 245/45R20 103V XL It is a square setup. I do not think there will be any issues with AWD system. |
Appreciate
0
|
11-08-2021, 12:19 PM | #6 | |
Enlisted Member
9
Rep 34
Posts |
Quote:
Staggered set is just $75 more so pretty much negligible, might go for it after all just for peace of mind. |
|
Appreciate
0
|
11-08-2021, 12:27 PM | #7 | |
Captain
519
Rep 916
Posts |
Quote:
You would need 36112472751 on the rears, i.e. 275/40 R20 106V XL |
|
Appreciate
0
|
11-08-2021, 12:50 PM | #8 |
Brigadier General
744
Rep 3,281
Posts |
No, the recommended range for 20 x 9.5 inch wheels is such that 245's are too narrow and you will have to stretch them to fit. They will probably go on, but will have noticeable stretch to the sidewalls, the handling and grip will be compromised. Just spend the $75.
__________________
2022 X4 M40i - 2008 135i - 2015 F700GS On Order - 2024 i4 M50 Scruffy's gonna die the way he lived... Mmhm. |
Appreciate
0
|
11-08-2021, 01:32 PM | #9 | |
Lieutenant General
6545
Rep 15,857
Posts |
Quote:
If you are getting new rims and tires then you have a choice of going square. |
|
Appreciate
0
|
11-08-2021, 03:02 PM | #10 | |
Second Lieutenant
230
Rep 290
Posts
Drives: '22 X4 M40i / '24 X5 M60i
Join Date: Jun 2009
Location: Vancouver, BC
|
Quote:
This is square winter setup BMW offers in Canada for G01 (incl. M40i) winter set under P/N 36110003064: Last edited by Treeboy; 11-08-2021 at 03:24 PM.. |
|
Appreciate
0
|
11-08-2021, 07:37 PM | #11 | |
Private First Class
89
Rep 127
Posts |
Quote:
OP has a staggered setup with: --Front: 20x8" ET27 with 245/45-20 --Rear : 20x9.5" ET43 with 275/40-20 Agree with others, not advised due to the fact the tire will be stretched. Some shops may decline to mount the 245/45-20 on the rears because many tire manufacturers specify 9" as the maximum wheel width for this size. |
|
Appreciate
1
Treeboy230.00 |
11-08-2021, 09:10 PM | #12 | |
A family of bimmers
2796
Rep 7,755
Posts |
Quote:
__________________
2018 PB/Black G01 X3M40i | 699M | ZDA | ZPP | ZPX | Maxton front lip | X3M vents | 15mm Spacers | Diamond G20 style grills |
|
Appreciate
0
|
11-09-2021, 03:35 AM | #13 | |
Lieutenant General
6545
Rep 15,857
Posts |
Quote:
Simply put, the rear rims are too wide for what the OP would like to do. |
|
Appreciate
0
|
11-09-2021, 07:12 AM | #14 | ||
A family of bimmers
2796
Rep 7,755
Posts |
Quote:
__________________
2018 PB/Black G01 X3M40i | 699M | ZDA | ZPP | ZPX | Maxton front lip | X3M vents | 15mm Spacers | Diamond G20 style grills |
||
Appreciate
0
|
11-09-2021, 08:21 AM | #15 | |
Lieutenant General
6545
Rep 15,857
Posts |
Quote:
OP really needs a couple of extra 'front' sized rims, to go square, even if changing tires seasonally. Two could stay mounted, just swap the other two. |
|
Appreciate
0
|
11-09-2021, 09:18 AM | #16 | |
Captain
519
Rep 916
Posts |
Quote:
|
|
Appreciate
0
|
11-09-2021, 09:36 AM | #17 |
Lieutenant General
6545
Rep 15,857
Posts |
|
Appreciate
0
|
11-09-2021, 05:25 PM | #18 |
Captain
564
Rep 770
Posts |
You can usually get both square and staggered setups here in Europe on either the 695 or 699 rim directly from BMW. But at the moment the square setups are out of stock.
Mounting a 245 tire on the 9,5 rim is no option to considder. But related to the initial question of this thread if the goal is to keep the budget low I would get some decent aftermarket rims and have a set of wintertires instead of swapping tires on one set of rims. Or if you want to stay with OEM rims instead of paying a fortune for two spare 699 8x20 rims I would recommend to have a 19" set for the winter. Thats what I did and quite happy with it. Also the 19" are not so easyly damaged in potholes or curbs hidden in the snow |
Appreciate
0
|
11-09-2021, 11:35 PM | #19 |
Enlisted Member
9
Rep 34
Posts |
Thanks for all the replies.
I found a good deal on Bridgestone Blizzak LM005 in 275/40 20 size, so I just went with OEM sizes: 2x 245/45 for the front and 2x 275/40 for the rear, all made in 2021. Turned out to be like $25 more over 4x 245/45. |
Post Reply |
Bookmarks |
|
|