07-29-2020, 10:42 AM | #1 |
Second Lieutenant
104
Rep 223
Posts |
Confusion about Rim width and Tire sizes - help?
Hey guys,
I'm looking to purchase a set of full winter tires and rims for my x6. My factory set up sticker shows: 275/35 R22 XL 315/30 R22 XL According to willtheyfit.com, rims should be at least 12inches wide to fit 315 tires. The largest rims I've found are 11inchs. Some at 10.5 as well. Willtheyfit also indicates a rim width of 10.5 for 275 tires, but the factory set up is 9.5 on 275's. I'm confused.... Can anyone shed light or educate me on this? Is it safe to run tire and rims in that setup? |
07-29-2020, 10:57 AM | #2 | |
Brigadier General
4360
Rep 4,246
Posts |
Quote:
It's most likely showing you max rim widths for the OEM tire widths. You need at minimum the OEM factory rim widths for the OEM tire sizes. For example, you wouldn't want select a rim width size larger than 10.5 for 275 since this will stretch the sidewalls. You can do it but it isn't ideal. Likewise for the rear, you wouldn't a rim width smaller than 10.5 for 315 which could pinch sidewalls. Link to OEM Wheel-size
__________________
Current BMWs - '20 X5 xDrive40i M Sport, '20 BMW M550i | Past BMWs - '03 E39 540iT M Sport, '06 E53 4.8is, '11 E70 M Sport LCI
Last edited by Auricom; 11-24-2021 at 04:52 PM.. |
|
Appreciate
1
CT335xi684.00 |
07-29-2020, 11:27 AM | #3 | |
Captain
720
Rep 704
Posts |
Quote:
A 315/30R22 tire will fit a 10.5" wide wheel perfectly fine, and a 275/35R22 tire will fit a 9.5" wide wheel perfectly fine, as many 742M wheel owners can attest to. BMW wouldn't select these sizes as stock if they weren't appropriate. IMO, you can even get away with one size down (305 and 265 respectively) if you don't want as much of an outward stretch. I probably wouldn't go a size up in tire width, however. Last edited by bforbrian; 08-23-2020 at 12:11 PM.. |
|
Appreciate
0
|
07-29-2020, 12:40 PM | #4 |
Major
1340
Rep 1,240
Posts |
Yea..... you are looking at "max" rim width for 315 rear and 275 front.
Those are oem tire sizes, and oem widths are 10.5 and 9.5 respectively. 315 on a 12" wide rim will be very stretched. If you are looking for tires for the oem rims, get oem sized tires. I did a TONNNNNNN of research on different wheel/tire setups before I bought mine (335/25/22 rear on 22x12, 285/30/22 on 22x10.5 front)..... but I researched appropriate wheel/tire combos that work together, and are all within an acceptable overall diameter from eachother..... from 9 inches to 12, and everything in between. I have it all written down in my office. If you're interested, I'll post it all up. If you're just interested in replacing oem tires.... just go with oem size. Best, safest bet. |
Appreciate
1
aug0211167.50 |
07-29-2020, 01:07 PM | #5 | |
Second Lieutenant
104
Rep 223
Posts |
Quote:
Would really appreciate if you could post your research! |
|
Appreciate
0
|
07-29-2020, 01:43 PM | #6 | |
Captain
720
Rep 704
Posts |
Quote:
|
|
Appreciate
0
|
07-29-2020, 11:37 PM | #7 | |
Major
1340
Rep 1,240
Posts |
Quote:
I bought my car with 21s, and had a set of oem-sized all-seasons waiting in the garage to replace the crappy Continental summer tires. The OEM 21s are now my "winter" tires for the same reason as you. I'll tell you when they arrive. I made the conscious decision not to make a choice from limited online forums, but rather to let the experts at Vossen decide what the appropriate offset for my car is, with the widths I wanted. |
|
Appreciate
0
|
07-30-2020, 08:26 AM | #8 | |
Captain
720
Rep 704
Posts |
Quote:
|
|
Appreciate
0
|
07-30-2020, 01:16 PM | #9 |
Second Lieutenant
110
Rep 236
Posts |
Trouble is there is very limited choice on 22 inch winters. I have the 22 for the summer and put 20 on for the winter with all squared up so 4 of the same. These AEZ also fit the Porsche Cayenne. Have just got the bmw centre caps to finish them off. Not fitted yet.
|
Appreciate
0
|
08-22-2020, 06:18 PM | #10 | |
New Member
0
Rep 10
Posts |
hub centric rings?
Hey there, just wondering when you guys go to after market wheels, did you add hub centric rings of the bore was different?
I have a 2019 X5, and looking to place on 20's for winter (Asanti ABL-11 - 20x9, 72.6 / +35 mm offset). The BMW centre bore is 66.6. Thanks, SG Quote:
|
|
Appreciate
0
|
08-25-2020, 11:16 AM | #11 | |
Second Lieutenant
104
Rep 223
Posts |
Quote:
__________________
|
|
Appreciate
0
|
08-25-2020, 12:59 PM | #12 | ||
Colonel
1698
Rep 2,609
Posts |
Quote:
__________________
G05 X5 x40i (04/2019 mfg, Canada) on S18A-19-11-540
|
||
Appreciate
0
|
08-25-2020, 01:53 PM | #13 | |
Second Lieutenant
104
Rep 223
Posts |
Quote:
Would I still need an adapter or could I get away with that?
__________________
|
|
Appreciate
0
|
08-25-2020, 02:05 PM | #14 | ||
Colonel
1698
Rep 2,609
Posts |
Quote:
__________________
G05 X5 x40i (04/2019 mfg, Canada) on S18A-19-11-540
|
||
Appreciate
0
|
08-25-2020, 02:11 PM | #15 | |
Second Lieutenant
104
Rep 223
Posts |
Quote:
275/45/20 with 9inch rims 72.6 bore (will use an 8mm ring) 305/40/20 with 10.5 rims on the rear (ring again) Screen shot attached!
__________________
|
|
Appreciate
0
|
08-25-2020, 02:16 PM | #16 | ||
Colonel
1698
Rep 2,609
Posts |
Quote:
Update: you posted full specs now, I would have to do some calcs on the offsets to see if that works, don't quite have time right now. About fitting over brakes and length of bolts, that either requires input from a pro or manufacturer, or test fitting. By the way, thanks for quoting quickly and capturing my stupid brain glitch about hub rings for wheels with smaller hub centres than the car. LOL.
__________________
G05 X5 x40i (04/2019 mfg, Canada) on S18A-19-11-540
|
||
Appreciate
1
Pumxee104.00 |
08-25-2020, 02:40 PM | #17 | ||
Colonel
1698
Rep 2,609
Posts |
Quote:
For hub rings, yes you would need 72.6 OD to 66.6 ID adapter rings (so that's a 6mm adapter ring, but they are usually spec'd OD/ID rather than thickness since thickness is insufficient spec). These definitely exist, but can sometimes be tricky to find (a wheel shop should be able to find for you). I would go with aluminum alloy rather than plastic rings on an SUV. Bolt lengths and fit over brakes requires more info or test fitment (because your offsets match so closely, there is a good chance that your stock bolts will be fine as well). I noticed that your order page says "nuts" and that you're paying extra for those. German cars don't use lug nuts, but rather bolts, so the nuts are useless to you.
__________________
G05 X5 x40i (04/2019 mfg, Canada) on S18A-19-11-540
|
||
Appreciate
0
|
08-25-2020, 03:00 PM | #18 | |
Second Lieutenant
104
Rep 223
Posts |
Quote:
Going to pull the trigger on this I think!
__________________
|
|
Appreciate
0
|
08-25-2020, 03:19 PM | #19 | ||
Colonel
1698
Rep 2,609
Posts |
Quote:
__________________
G05 X5 x40i (04/2019 mfg, Canada) on S18A-19-11-540
|
||
Appreciate
0
|
08-25-2020, 03:25 PM | #20 | |
Second Lieutenant
104
Rep 223
Posts |
Quote:
__________________
|
|
Appreciate
0
|
08-25-2020, 06:03 PM | #21 | ||
Colonel
1698
Rep 2,609
Posts |
Quote:
__________________
G05 X5 x40i (04/2019 mfg, Canada) on S18A-19-11-540
|
||
Appreciate
0
|
08-26-2020, 09:35 PM | #22 | |
Second Lieutenant
104
Rep 223
Posts |
Quote:
Wanted to get your opinion on them before pulling the trigger on either. Both will cost about $3000. Option 1: 20inch rims on Michellin Alipne Pa5 winter tires 275/45/20 on the front 305/40/20 on the rear Option 2: 21inch rims on Continental ContiWinterContact Tires 275/40/21 on the front 305/35/21 on the rear Guess my question is regarding which would be a better winter setup? The 20inch rims on the alpin 5's or the 21inch rims on the conti's (I can also get these on the alpin 5s? So really it's just a question about wether 20's are better or 21's for the winter? Is there a big difference between a 275/45/20 and a 275/40/21 in terms or ride quality, comfort, grip, damage from packed snow/ice?
__________________
Last edited by Pumxee; 08-26-2020 at 09:40 PM.. |
|
Appreciate
0
|
Post Reply |
Bookmarks |
|
|