245/45/18 tire size help

Xsalfior · 09-13-2011, 04:39 PM

Hi Guys,

I own a 2007 Z4M Coupe and although I know that my speedo will be off I just want to know if they will fit without having rubbing issues. The only reason I ask is because I can get the tires for free.

Tires 245/45/18 Dunlop Winter Sport
Rims
VMR V7101
18x8.5 all around
Fronts ET 35
Rears ET 20

Will these work? I looked thru the tire calculator and it looks like my speedo will be off by about 4km.

BTM · 09-14-2011, 11:00 AM

Fronts will rub under full lock at stock ride height. If you are lowered, they will rub all the time. I had this size snow tire on my car last year, and got anxious had put coilovers on it before winter was over. My fender liners are destroyed. I'm selling mine and going with a 17" setup this year, though I plan to drive this car little in the winter since I have a truck now.

Xsalfior · 09-14-2011, 02:20 PM

Quote:

Originally Posted by BTM

Fronts will rub under full lock at stock ride height. If you are lowered, they will rub all the time. I had this size snow tire on my car last year, and got anxious had put coilovers on it before winter was over. My fender liners are destroyed. I'm selling mine and going with a 17" setup this year, though I plan to drive this car little in the winter since I have a truck now.

Thanks for the response BTM, I really appreciate it. So do you think your in fender liners were destroyed because you switched to coilovers but at stock height you probably just rubbed them a bit here and there?

BTM · 09-14-2011, 04:13 PM

Definitely since I got it lowered, since it would rub an almost any medium/larger size bump, even more so with 2 people in the car. Before, it wouldn't rub at all, except under full lock, which I learned to avoid pretty easily. Since the wheel you are looking at will stick out 13mm more (according to http://www.1010tires.com/WheelOffsetCalculator.asp), I would think they would rub a little more than stock fronts, which are 18x8ET42. (To me the fact they would only rub on full lock says that it was the outside edge that was rubbing). By how much I don't know though.

09-13-2011, 04:39 PM	#1
Xsalfior Private First Class 11 Rep 193 Posts Drives: E92 IB M3 Join Date: Jan 2009 Location: Calgary, Alberta iTrader: (2)	245/45/18 tire size help Hi Guys, I own a 2007 Z4M Coupe and although I know that my speedo will be off I just want to know if they will fit without having rubbing issues. The only reason I ask is because I can get the tires for free. Tires 245/45/18 Dunlop Winter Sport Rims VMR V7101 18x8.5 all around Fronts ET 35 Rears ET 20 Will these work? I looked thru the tire calculator and it looks like my speedo will be off by about 4km. Last edited by Xsalfior; 09-13-2011 at 05:14 PM..
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09-14-2011, 11:00 AM	#2
BTM Banned 483 Rep 10,309 Posts Drives: A///MERICAN!!! Join Date: Mar 2010 Location: A///MERICA!!! iTrader: (11) Garage List 2007 BMW Z4 M Coupe [7.20]	Fronts will rub under full lock at stock ride height. If you are lowered, they will rub all the time. I had this size snow tire on my car last year, and got anxious had put coilovers on it before winter was over. My fender liners are destroyed. I'm selling mine and going with a 17" setup this year, though I plan to drive this car little in the winter since I have a truck now. Last edited by BTM; 09-14-2011 at 11:06 AM..
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09-14-2011, 04:13 PM	#4
BTM Banned 483 Rep 10,309 Posts Drives: A///MERICAN!!! Join Date: Mar 2010 Location: A///MERICA!!! iTrader: (11) Garage List 2007 BMW Z4 M Coupe [7.20]	Definitely since I got it lowered, since it would rub an almost any medium/larger size bump, even more so with 2 people in the car. Before, it wouldn't rub at all, except under full lock, which I learned to avoid pretty easily. Since the wheel you are looking at will stick out 13mm more (according to http://www.1010tires.com/WheelOffsetCalculator.asp), I would think they would rub a little more than stock fronts, which are 18x8ET42. (To me the fact they would only rub on full lock says that it was the outside edge that was rubbing). By how much I don't know though.
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