255/35/18 Fit?

Punko · 10-09-2012, 07:56 PM

Would a Michelin PS2 255/35/18 fit on our OEM wheel?

Recommended fit is 8.5 to 10 wheel. I believe our front wheels are only 8"

I currently have 245/40/18 which is the limit for 8" wide rim.

Finnegan · 10-09-2012, 08:06 PM

Front wheel is only 8". No, it won't fit. I'd recommend a 9.5" wheel or at least 9" for a tire that size. Why? See what my experience was recently with a 245/40 on a stock 8" wheel. Spark Notes version is that really wide tires at the absolute edge of what will fit (e.g. 245 on an 8" wheel) perform much worse than a narrower tire on the same size wheel.

You can fit those size tires on wider wheel, and then it's going to require the right offset (probably about ET38 - ET35) and considerable negative camber to get it to tuck in under the fenders.

Better question is why do you want all that rubber? Look? Performance? (I thought the 245s looked a bit overstuffed on stock wheels myself--subjective of course.)

inTgr8r · 10-09-2012, 08:42 PM

IMO 235 fr / 265 rr is the best fitment on OE wheels

JeffchaPz · 10-09-2012, 10:08 PM

I'm thinking of getting new tires and I was planning on on getting 235/40 Front and 265/40 for the back.... any thoughts ???

or should I stay with 225 and 255 and get spacers for a flush/cleaner look on stock wells?

3002 tii · 10-09-2012, 10:26 PM

Quote:

Originally Posted by inTgr8r

IMO 235 fr / 255 rr is the best fitment on OE wheels

But the heights are then mismatched...

Quote:

Originally Posted by JeffchaPz

I'm thinking of getting new tires and I was planning on on getting 235/40 Front and 265/40 for the back.... any thoughts ???

or should I stay with 225 and 255 and get spacers for a flush/cleaner look on stock wells?

Curious why you'd go with a 40 profile on a 265.

JeffchaPz · 10-09-2012, 10:36 PM

No particular reason, I don't understand why the front tires are a bit taller than the ones in the back.

I also like the way 40 look in the back.... looks like the prefect fit on stock suspension... IMO.

What do you recommend.

Finnegan · 10-09-2012, 11:20 PM

235/40 and 265/35. Keeps ratio front/rear pretty much same as stock. Smaller overall diameter, bit more effective wheel torque (about 2.5%). That comes at the expense of a smoother ride though (less rubber cushion).

Also, square stiffer sidewall tires--if going 235/265--work better with this 10mm wider size on stock wheels IMO than more rounded softer sidewalls. (Square e.g. Star Spec, RS3, NT05.)

Kgolf31 · 10-09-2012, 11:33 PM

I personally run 235/45 and 265/40. It matched overall diameter on OEM versus 235/40 and 265/35

XMetal · 10-09-2012, 11:34 PM

Quote:

Originally Posted by JeffchaPz

No particular reason, I don't understand why the front tires are a bit taller than the ones in the back.

I also like the way 40 look in the back.... looks like the prefect fit on stock suspension... IMO.

What do you recommend.

The OE fronts (45% of 225mm = 101.25mm) are actually a bit shorter than the OE rears (40% of 255mm = 102mm).

If you like the look of the 255/40, then I'm pretty sure you would hate the taller look of the 265/40.

XMetal · 10-09-2012, 11:36 PM

Quote:

Originally Posted by Kgolf31

I personally run 235/45 and 265/40. It matched overall diameter on OEM versus 235/40 and 265/35

I'm liking this 235/45 and 265/40 combo as well. Do you know of any website that will let me look up what tires (brand/type) are available in that combo? I usually can find a tire in one of the size, but then can't find a matching pair for the other size.

Kgolf31 · 10-09-2012, 11:37 PM

Quote:

Originally Posted by XMetal

I'm liking this 235/45 and 265/40 combo as well. Do you know of any website that will let me look up what tires (brand/type) are available in that combo? I usually can find a tire in one of the size, but then can't find a matching pair for the other size.

I just used Tirerack and go to the spec page and it lists all the details of each size.

XMetal · 10-09-2012, 11:39 PM

Thanks for the tips

inTgr8r · 10-10-2012, 06:13 AM

Quote:

Originally Posted by DSC_OFF

But the heights are then mismatched...

.

oops... brain cramp. ....fixed, meant 265

Punko · 10-10-2012, 05:02 PM

245/40 and 265/40 has been my choice because they were M3 OEM size....lots were available.....$ was good.

I asked the question because there were a set 255/30 for sale.

Lots of great info, thanks for the posts.

10-09-2012, 07:56 PM	#1
Punko Second Lieutenant 20 Rep 250 Posts Drives: 07 Z4 M Coupe Join Date: Feb 2011 Location: Hamilton, ON iTrader: (2)	255/35/18 Fit? Would a Michelin PS2 255/35/18 fit on our OEM wheel? Recommended fit is 8.5 to 10 wheel. I believe our front wheels are only 8" I currently have 245/40/18 which is the limit for 8" wide rim.
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10-09-2012, 08:06 PM	#2
Finnegan Dog Listener 701 Rep 7,850 Posts Drives: Z4M/. Z3M, E36/46 M3 Join Date: Oct 2008 Location: Teaching the dog to slalom iTrader: (22)	Front wheel is only 8". No, it won't fit. I'd recommend a 9.5" wheel or at least 9" for a tire that size. Why? See what my experience was recently with a 245/40 on a stock 8" wheel. Spark Notes version is that really wide tires at the absolute edge of what will fit (e.g. 245 on an 8" wheel) perform much worse than a narrower tire on the same size wheel. You can fit those size tires on wider wheel, and then it's going to require the right offset (probably about ET38 - ET35) and considerable negative camber to get it to tuck in under the fenders. Better question is why do you want all that rubber? Look? Performance? (I thought the 245s looked a bit overstuffed on stock wheels myself--subjective of course.)
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10-09-2012, 08:42 PM	#3
inTgr8r Lieutenant General 2426 Rep 11,667 Posts Drives: M2 Comp Join Date: Mar 2006 Location: Toronto iTrader: (10)	IMO 235 fr / 265 rr is the best fitment on OE wheels __________________ '21 M2C Hockenheim Silver '18 718 Cayman S Lava Orange (sold) '13 E92 M3 Santorini Blue (sold) '07 Z4 M Coupe Alpine White (sold) Last edited by inTgr8r; 10-10-2012 at 06:11 AM..
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10-09-2012, 10:08 PM	#4
JeffchaPz Second Lieutenant 16 Rep 251 Posts Drives: 2007 Z4M Join Date: Sep 2011 Location: Austin, TX iTrader: (0)	I'm thinking of getting new tires and I was planning on on getting 235/40 Front and 265/40 for the back.... any thoughts ??? or should I stay with 225 and 255 and get spacers for a flush/cleaner look on stock wells?
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10-09-2012, 10:36 PM	#6
JeffchaPz Second Lieutenant 16 Rep 251 Posts Drives: 2007 Z4M Join Date: Sep 2011 Location: Austin, TX iTrader: (0)	No particular reason, I don't understand why the front tires are a bit taller than the ones in the back. I also like the way 40 look in the back.... looks like the prefect fit on stock suspension... IMO. What do you recommend.
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10-09-2012, 11:20 PM	#7
Finnegan Dog Listener 701 Rep 7,850 Posts Drives: Z4M/. Z3M, E36/46 M3 Join Date: Oct 2008 Location: Teaching the dog to slalom iTrader: (22)	235/40 and 265/35. Keeps ratio front/rear pretty much same as stock. Smaller overall diameter, bit more effective wheel torque (about 2.5%). That comes at the expense of a smoother ride though (less rubber cushion). Also, square stiffer sidewall tires--if going 235/265--work better with this 10mm wider size on stock wheels IMO than more rounded softer sidewalls. (Square e.g. Star Spec, RS3, NT05.)
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10-09-2012, 11:33 PM	#8
Kgolf31 Brigadier General 459 Rep 4,531 Posts Drives: 2007 Z4MC, 2012 128i Join Date: Sep 2008 Location: Ohio iTrader: (4)	I personally run 235/45 and 265/40. It matched overall diameter on OEM versus 235/40 and 265/35
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10-09-2012, 11:39 PM	#12
XMetal Colonel 1125 Rep 2,860 Posts Drives: Anything Join Date: Apr 2010 Location: SoCal iTrader: (0) Garage List 2008 Z4M Coupe [10.00] 2018 Audi S3 [0.00] 2004 X5 [8.50]	Thanks for the tips
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10-10-2012, 05:02 PM	#14
Punko Second Lieutenant 20 Rep 250 Posts Drives: 07 Z4 M Coupe Join Date: Feb 2011 Location: Hamilton, ON iTrader: (2)	245/40 and 265/40 has been my choice because they were M3 OEM size....lots were available.....$ was good. I asked the question because there were a set 255/30 for sale. Lots of great info, thanks for the posts.
	Appreciate 0 Quote

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