Anyone with xDrive running a setup?

retroviol3t · 05-21-2022, 01:48 PM

I was looking at running..

20x10.0 +12 - 275/30/20
20x11.0 +14 - 295/30/20

But the rep at BC Forged was saying since I'm AWD the heights should be within 2% of each other and I don't understand. They're both 30 series so the heights are identical?

What setup are y'all running?

I'll be lowered on MSS just trying not to rub.

tooshay · 05-21-2022, 02:24 PM

According to most, it should be under 1%

somer · 05-21-2022, 05:47 PM

Width's also play a role in rolling diameter

255/30/20 is way different than say 305/30/20

Here's a calculator to play around with: https://www.tacomaworld.com/tirecalc

Ideally the best setup is probably 285/30/20 and 295/30/20 which is within .3% of stock sizes.

bmw noob · 05-21-2022, 09:50 PM

The sidewall height is essentially the width TIMES the profile %...meaning 295/30 has a sidewall height of 295mm * .3

That's why a wider tire with a smaller profile % is the same rolling circumference as a narrower tire with higher profile %.

Google tire size calculator, there are tons out there so you can compare width and profile options.

Also, most manufacturers require rolling circumference to be within 1% front to rear for AWD cars to protect the differential. Go beyond at your own risk.

retroviol3t · 05-21-2022, 09:52 PM

Quote:

Originally Posted by somer

Width's also play a role in rolling diameter

255/30/20 is way different than say 305/30/20

Here's a calculator to play around with: https://www.tacomaworld.com/tirecalc

Ideally the best setup is probably 285/30/20 and 295/30/20 which is within .3% of stock sizes.

Okay so that's what BC said and suggested but they said a 285/30 runs a higher risk of rubbing on turns in front. Sigh.

CadHater · 05-22-2022, 02:59 AM

285/30 in front and 295/30 in back with 20" all around.
10.5 in front and 11.0 in back, lowered on H&R Springs.
Had to push back front fender, was rubbing bad in reverse.

exmowner · 05-22-2022, 08:48 AM

Quote:

Originally Posted by CadHater

285/30 in front and 295/30 in back with 20" all around.
10.5 in front and 11.0 in back, lowered on H&R Springs.
Had to push back front fender, was rubbing bad in reverse.

Wow

tooshay · 05-24-2022, 09:32 AM

According to the guys on the f90 forum, they can run up to a 2% difference and be fine. All M5s have xdrive and stock tires are at 1% difference already.

Hendo741 · 05-24-2022, 02:38 PM

Quote:

Originally Posted by tooshay

According to the guys on the f90 forum, they can run up to a 2% difference and be fine. All M5s have xdrive and stock tires are at 1% difference already.

If you want to risk your 5 figure transmission on information from random ppl on an internet forum, feel free. I'm running tires within tolerance.

BulkBen · 05-26-2022, 01:18 AM

Quote:

Originally Posted by Hendo741

If you want to risk your 5 figure transmission on information from random ppl on an internet forum, feel free. I'm running tires within tolerance.

Also, take note of this thread when a member tried 285's and 305's at the track: https://g80.bimmerpost.com/forums/sh....php?t=1901031
Clear evidence the G series X drive's don't like it running outside 1% - his setup was 1.8% apart in diameter and it seemed like a disaster.

Until we see others get away with it I'd be very cautious.

The M5 setup may well be different enough to allow up to 2%, that does not mean the G series AWD's will.

Widebetty · 12-20-2022, 10:05 PM

I was thinking of running 20 all around does anyone know if I would run
275/30/20
295/30/20

Michelin pilot sports

retroviol3t · 12-20-2022, 10:44 PM

Quote:

Originally Posted by Widebetty

I was thinking of running 20 all around does anyone know if I would run
275/30/20
295/30/20

Michelin pilot sports

Are you RWD?

Widebetty · 12-20-2022, 11:46 PM

X drive g80

VDMTom · 12-21-2022, 12:10 AM

Quote:

Originally Posted by Widebetty

I was thinking of running 20 all around does anyone know if I would run
275/30/20
295/30/20

Michelin pilot sports

You should run 285/30/20 and 295/30/20, esp if you're buying a new set of tires

Widebetty · 12-21-2022, 12:12 AM

Quote:

Originally Posted by VDMTom

You should run 285/30/20 and 295/30/20, esp if you're buying a new set of tires

It shouldn’t mess up my x drive system?

VDMTom · 12-21-2022, 12:14 AM

Quote:

Originally Posted by Widebetty

It shouldn’t mess up my x drive system?

No, you'll be good,

What widths/offsets are you gonna use the tires on?

Widebetty · 12-22-2022, 06:03 PM

Quote:

Originally Posted by VDMTom

No, you'll be good,

What widths/offsets are you gonna use the tires on?

I was think 10 front and 11 for the widths

Limegrntaln · 12-22-2022, 09:15 PM

Quote:

Originally Posted by Widebetty

It shouldn’t mess up my x drive system?

1.1% is about the max you want to go with xDrive. 1.9% is way too far off.

05-21-2022, 01:48 PM	#1
retroviol3t First Lieutenant 516 Rep 352 Posts Drives: 2023 Jahre - Techno Violet Join Date: Sep 2021 Location: Only Ten I See iTrader: (0)	Anyone with xDrive running a setup? I was looking at running.. 20x10.0 +12 - 275/30/20 20x11.0 +14 - 295/30/20 But the rep at BC Forged was saying since I'm AWD the heights should be within 2% of each other and I don't understand. They're both 30 series so the heights are identical? What setup are y'all running? I'll be lowered on MSS just trying not to rub. __________________ ig: retroviol3t
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05-21-2022, 02:24 PM	#2
tooshay Captain 313 Rep 757 Posts Drives: G20+M3 badge Join Date: Dec 2007 Location: Temecula iTrader: (6)	According to most, it should be under 1% __________________ G20 with some ///M3 stuff = G80
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05-21-2022, 05:47 PM	#3
somer Major 972 Rep 1,064 Posts Drives: F10 M5 CP Join Date: Oct 2013 Location: FL iTrader: (0)	Width's also play a role in rolling diameter 255/30/20 is way different than say 305/30/20 Here's a calculator to play around with: https://www.tacomaworld.com/tirecalc Ideally the best setup is probably 285/30/20 and 295/30/20 which is within .3% of stock sizes.
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05-21-2022, 09:50 PM	#4
bmw noob Captain 1460 Rep 911 Posts Drives: 2022 G80 Comp x-drive Join Date: Feb 2008 Location: Miami iTrader: (0) Garage List 2022 BMW M3 COMP XD ... [0.00]	The sidewall height is essentially the width TIMES the profile %...meaning 295/30 has a sidewall height of 295mm * .3 That's why a wider tire with a smaller profile % is the same rolling circumference as a narrower tire with higher profile %. Google tire size calculator, there are tons out there so you can compare width and profile options. Also, most manufacturers require rolling circumference to be within 1% front to rear for AWD cars to protect the differential. Go beyond at your own risk. __________________ 2022 G80 comp X-drive:San Marino Blue/ Silverstone, 826 bicolor, cf roof; exec pkg; shadow lasers; carbon pack; MSS HAS; spacers (15/12); Burger intakes; Unit17 front lip/CS Style spoiler; TLG flappies; full xpel ppf + 15% tint; AWE switchpath exhaust w/mid-pipes; csl strut brace; Eventuri cf engine cover Gone: 2020 M340i; 2017 F30 340i; 2008 e92 335
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05-22-2022, 02:59 AM	#6
CadHater Lieutenant 768 Rep 430 Posts Drives: M3 Comp AWD Join Date: Jan 2021 Location: Germany iTrader: (0)	285/30 in front and 295/30 in back with 20" all around. 10.5 in front and 11.0 in back, lowered on H&R Springs. Had to push back front fender, was rubbing bad in reverse. Attached Images __________________ 2022 M3 xDrive - BSM/Tartufo
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05-24-2022, 09:32 AM	#8
tooshay Captain 313 Rep 757 Posts Drives: G20+M3 badge Join Date: Dec 2007 Location: Temecula iTrader: (6)	According to the guys on the f90 forum, they can run up to a 2% difference and be fine. All M5s have xdrive and stock tires are at 1% difference already.
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12-20-2022, 10:05 PM	#11
Widebetty New Member 9 Rep 19 Posts Drives: 2022 Bmw M3 Competition Xdrive Join Date: Aug 2022 Location: United states iTrader: (0) Garage List 2022 Bmw M3 Competi ... [0.00]	I was thinking of running 20 all around does anyone know if I would run 275/30/20 295/30/20 Michelin pilot sports
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12-20-2022, 11:46 PM	#13
Widebetty New Member 9 Rep 19 Posts Drives: 2022 Bmw M3 Competition Xdrive Join Date: Aug 2022 Location: United states iTrader: (0) Garage List 2022 Bmw M3 Competi ... [0.00]	X drive g80
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