245mm tires in front of the e89 (18 or 19")?

Squddie · 05-11-2015, 11:13 AM

I'm having second thoughts about going 19". Plan was:
19x8.5 + 245/35r19 square.

Thinking 18" now, but I see conflicting information about whether 245/40r18 fits in the front of the e89?

Some people say you need to go 19" for the 245s to clear the strut and 18" 245s will not work. But occasionally somebody runs like that. If you do, what offset do you have?

aznoo1 · 05-11-2015, 01:10 PM

i think it really have to do with the width of the rim and offset. im running 235mm with no problems on 8.5in et35.

Squddie · 05-11-2015, 01:17 PM

Yeah. Correct me if I'm wrong but a 8.0 width 18" with 35mm offset would create more of a problem than a 8.5 wide 18" with 35mm offset, right?

If I want the 245s on 18" with 35mm offset I better get 8.5s if I understand that correctly?

That's too bad because it rules out the BBS SRs with are 18x8.

Squddie · 05-11-2015, 01:38 PM

Actually the SR has 32mm offset, tirerack just has an incorrect warning message saying it is 35mm. Maybe I should just get it over with and try the 245s. If the front doesn't fit I can order some 235s and use the 245s in the rear after the first pair is gone. Can't take that long

instantfob · 05-11-2015, 02:51 PM

I don't remember the exact offset but my buddy bought two pairs of E9x M3 rear wheels and ran 245 all around on his 2011 35is.

Squddie · 05-11-2015, 08:46 PM

Quote:

Originally Posted by instantfob

I don't remember the exact offset but my buddy bought two pairs of E9x M3 rear wheels and ran 245 all around on his 2011 35is.

Sorry, are those 18 or 19s?

nicknaz · 05-12-2015, 01:20 PM

235/40/18 front and 265/35/18 rear is a "no issues" sizing.

If you went 245 front my understanding is you need to measure the offset and actually tire width

instantfob · 05-13-2015, 09:33 AM

Quote:

Originally Posted by Squddie

Sorry, are those 18 or 19s?

Sorry.

I messaged him and he said those where E46 M3 rears. 18"
See the picture below.

nicknaz · 05-13-2015, 03:23 PM

OP sorry to thread jack but I have a complete set of wheels, tires, TPMS for sale

OEM 18" style 325, with dunlop zii (lots of tread left) and tmps.

Great street tire setup for HPDE and autox

http://e89.zpost.com/forums/showthread.php?t=1106348

I need these gone (And have priced accordingly) because my F80 is ready for pickup and my E89 is going away...

Squddie · 05-13-2015, 05:13 PM

I'm afraid those aren't quite what I am looking for.

Really want to try a square setup.

instantfob · 05-13-2015, 08:46 PM

Quote:

Originally Posted by nicknaz

OP sorry to thread jack but I have a complete set of wheels, tires, TPMS for sale

OEM 18" style 325, with dunlop zii (lots of tread left) and tmps.

Great street tire setup for HPDE and autox

http://e89.zpost.com/forums/showthread.php?t=1106348

I need these gone (And have priced accordingly) because my F80 is ready for pickup and my E89 is going away...

Great for track day. Let me unload my 19" tires and I'll PM you.
If it all works out I'll make a trip to SD.

Squddie · 05-14-2015, 07:31 PM

Mostly narrowed it down to O.Z. Ultraleggera in 18x8 (they don't have 18x8.5 but 18x9 in case I end up staggered).

Now, question

They comes in two offsets:

18x8 +34mm
18x8 +40mm

Which one gives me the better chance to get away with 245mm 18" in the front of the e89?

I poked around in the wheel arch with full locked steering. I think inside is probably more critical.

I guess going /35 instead of /40 is advised either way given this stunt?

05-11-2015, 11:13 AM	#1
Squddie Second Lieutenant 39 Rep 290 Posts Drives: E89 Z4 Join Date: Apr 2014 Location: Bahston iTrader: (0)	245mm tires in front of the e89 (18 or 19")? I'm having second thoughts about going 19". Plan was: 19x8.5 + 245/35r19 square. Thinking 18" now, but I see conflicting information about whether 245/40r18 fits in the front of the e89? Some people say you need to go 19" for the 245s to clear the strut and 18" 245s will not work. But occasionally somebody runs like that. If you do, what offset do you have?
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05-11-2015, 01:10 PM	#2
aznoo1 Private 2 Rep 56 Posts Drives: z4 Join Date: Nov 2011 Location: toronto iTrader: (0)	i think it really have to do with the width of the rim and offset. im running 235mm with no problems on 8.5in et35.
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05-11-2015, 01:17 PM	#3
Squddie Second Lieutenant 39 Rep 290 Posts Drives: E89 Z4 Join Date: Apr 2014 Location: Bahston iTrader: (0)	Yeah. Correct me if I'm wrong but a 8.0 width 18" with 35mm offset would create more of a problem than a 8.5 wide 18" with 35mm offset, right? If I want the 245s on 18" with 35mm offset I better get 8.5s if I understand that correctly? That's too bad because it rules out the BBS SRs with are 18x8.
	Appreciate 0 Quote

05-11-2015, 01:38 PM	#4
Squddie Second Lieutenant 39 Rep 290 Posts Drives: E89 Z4 Join Date: Apr 2014 Location: Bahston iTrader: (0)	Actually the SR has 32mm offset, tirerack just has an incorrect warning message saying it is 35mm. Maybe I should just get it over with and try the 245s. If the front doesn't fit I can order some 235s and use the 245s in the rear after the first pair is gone. Can't take that long
	Appreciate 0 Quote

05-11-2015, 02:51 PM	#5
instantfob Car ADD 0 Rep 43 Posts Drives: G30 530e PHEV Join Date: Oct 2010 Location: Los Angeles iTrader: (0)	I don't remember the exact offset but my buddy bought two pairs of E9x M3 rear wheels and ran 245 all around on his 2011 35is. __________________ Now: 18 BMW 530e / 18 LR Disco V Past: 85 Corolla GT-S / 98 MB ML320 / 06 S2000 / 08 EVO X MR / 11 G37S 6MT / 12 MBZ E350 Bluetec / 13 BMW ActiveHybrid5 / 14 MBZ E350 / 14 Smart Electric Drive / 15 BMW i3 BEV / 16 MB GLE350 / 15 Z4 35is / 17 BMW 330e / 18 Jag E-Pace
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05-12-2015, 01:20 PM	#7
nicknaz Lieutenant General 3187 Rep 10,509 Posts Drives: C6Z Join Date: May 2008 Location: NorCal iTrader: (0)	235/40/18 front and 265/35/18 rear is a "no issues" sizing. If you went 245 front my understanding is you need to measure the offset and actually tire width
	Appreciate 0 Quote

05-13-2015, 03:23 PM	#9
nicknaz Lieutenant General 3187 Rep 10,509 Posts Drives: C6Z Join Date: May 2008 Location: NorCal iTrader: (0)	OP sorry to thread jack but I have a complete set of wheels, tires, TPMS for sale OEM 18" style 325, with dunlop zii (lots of tread left) and tmps. Great street tire setup for HPDE and autox http://e89.zpost.com/forums/showthread.php?t=1106348 I need these gone (And have priced accordingly) because my F80 is ready for pickup and my E89 is going away...
	Appreciate 0 Quote

05-13-2015, 05:13 PM	#10
Squddie Second Lieutenant 39 Rep 290 Posts Drives: E89 Z4 Join Date: Apr 2014 Location: Bahston iTrader: (0)	I'm afraid those aren't quite what I am looking for. Really want to try a square setup.
	Appreciate 0 Quote

05-14-2015, 07:31 PM	#12
Squddie Second Lieutenant 39 Rep 290 Posts Drives: E89 Z4 Join Date: Apr 2014 Location: Bahston iTrader: (0)	Mostly narrowed it down to O.Z. Ultraleggera in 18x8 (they don't have 18x8.5 but 18x9 in case I end up staggered). Now, question They comes in two offsets: 18x8 +34mm 18x8 +40mm Which one gives me the better chance to get away with 245mm 18" in the front of the e89? I poked around in the wheel arch with full locked steering. I think inside is probably more critical. I guess going /35 instead of /40 is advised either way given this stunt?
	Appreciate 0 Quote

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