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The Tire Rack's Tire & Wheel Forum
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Old 09-05-2009, 09:33 PM   #1
JaTe
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My Ride: '05 M3 ZCP
235/40r19 and 265/35r19 contisportcontact 3 tires

does anyone know if this size combo will work fine on my M3?

235/40r19 and 265/35r19 on a stock zcp m3. I will be lowering it eventually with the eibach pro-kit.

any feedback on the contisportcontact3 tires?

thanks.
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Old 09-05-2009, 09:58 PM   #2
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You should be OK with the fitment on the OEM suspension, but you're most likely going to rub with the Eibach pro-kit installed. You'd do best with a good set of coilover's like the Bilstein PSS10 or better yet the Bilstein B16 kit, because you'll need to either keep that room for suspension travel, or stiffen it up with a drop.

I personally wouldn't go too nuts with a ZCP that had just a spring kit, and such sticky rubber... Those Conti SC3's are great, but they'll quickly overload a suspension with a binding set up after a few heat cycles...

Not sure under what conditions you're planning to use the car for in the coming months, but Tire Rack has a pretty decent deal on those Michelin Pilot Sport A/S Plus all-season's right now... Those Conti SC3's are going to be pretty unforgiving if the temps drop near the freezing mark in Maryland... I know my SC2's weren't happy at all come late November...
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Old 09-06-2009, 12:43 PM   #3
JaTe
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thanks...i looked at the michelins a/s as it will let me drive the car year long. I am not too worried about winter time as I only drive the M3 about once a week right now. Come winter...it will rarely come out if it comes out at all.
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Old 09-06-2009, 12:52 PM   #4
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Quote:
Originally Posted by jerseyfresh View Post
You should be OK with the fitment on the OEM suspension, but you're most likely going to rub with the Eibach pro-kit installed. You'd do best with a good set of coilover's like the Bilstein PSS10 or better yet the Bilstein B16 kit, because you'll need to either keep that room for suspension travel, or stiffen it up with a drop.

I personally wouldn't go too nuts with a ZCP that had just a spring kit, and such sticky rubber... Those Conti SC3's are great, but they'll quickly overload a suspension with a binding set up after a few heat cycles...

Not sure under what conditions you're planning to use the car for in the coming months, but Tire Rack has a pretty decent deal on those Michelin Pilot Sport A/S Plus all-season's right now... Those Conti SC3's are going to be pretty unforgiving if the temps drop near the freezing mark in Maryland... I know my SC2's weren't happy at all come late November...
Not sure where you are getting your info from, but that 235/40/19 front and 265/35/19 rear will not rub on his CSL wheels, even on a KW-slammed M3. People run 275's and are low as hell with plenty of room.
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Old 09-06-2009, 05:22 PM   #5
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I think it's gonna look like a tractor. These tires are one inch taller than stock
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Old 09-06-2009, 06:04 PM   #6
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EDIT: incorrect info
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Old 09-06-2009, 06:10 PM   #7
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Those are the wrong sized tires by a big amount. Expect rubbing and inaccurate speedo readings, as well as possibly problems with your ABS and DSC.
+1


u need to run thinner sidewalls
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Old 09-06-2009, 06:42 PM   #8
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ie. a 235/35/19 and 265/30/19. The OP was trying to keep factory sidewalls. M3's aren't very low and OEM is always one step up on sidwall %

Jate most M3 owners upgrade to a 245/35/19 front and 275/30/19 rear. Thought about doing that?
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Old 09-06-2009, 10:57 PM   #9
JaTe
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Quote:
Originally Posted by CRXnut
I think it's gonna look like a tractor. These tires are one inch taller than stock
Quote:
Originally Posted by mkodama View Post
Those are the wrong sized tires by a big amount. Expect rubbing and inaccurate speedo readings, as well as possibly problems with your ABS and DSC.
Quote:
Originally Posted by w0w
+1


u need to run thinner sidewalls
according to the m3 tire size spreadsheet i found in my search

225/40r19 is 26.09" overall diameter (OEM)
235/40r19 is 26.40" overall diameter
Diameter difference of 0.31"

255/35r19 is 26.03" overall diameter (OEM)
265/35r19 is 26.30" overall diameter
Diameter difference of 0.27"

If I go with the more common 245/35/19 front and 275/30/19 rear...differences are -0.34" and -0.53" respectively.

IMO...the size i chose should provide less of a problem with abs and dsc. only issue i should be concerned about is rubbing since the diameter is slightly bigger and not smaller as the common replacement size. Id like to avoid going with a smaller diameter tire.

thanks for the input everyone.
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Old 09-07-2009, 02:21 AM   #10
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I'm totally sorry for my previous post. I never knew M3's ran larger circumference tires. I looked up data from both tirerack.com and realoem.com and the data you have is correct.

You shouldn't have problems with 235/40-19 and 265/35-19 tires.
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Old 09-07-2009, 11:27 PM   #11
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Sorry about my misleading post. I made the same mistake as mkodama.
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