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-   -   Tires**225/40R18 on 18x8.5 possible? (http://forum.e46fanatics.com/showthread.php?t=658778)

spd992 03-19-2009 01:24 PM

Tires**225/40R18 on 18x8.5 possible?
 
I obtained some new rims. They are 18x8.5 (all 4) with a 40mm offset.

I have a year 2000 328i

Purchased 225/40r18 tires, went to dealer and they won't mount them. They say the rim is way to wide for a 225 and they say the proper size would be more like a 255, but that would cause them to rub.

I have called tire-rack and another local tire company, and they both say the tire is capable of fitted a 8.5 wide rim and there is no safety risk.

Has anyone else done mounted a 225/40R18 on a 18x8.5 rim.

I just am worried since the dealer won't mount it for me.

Any advice would be helpful.

Thanks

alphaquhp 03-19-2009 02:00 PM

My rears are 18x8.5 with 225/40/R18 tires. Its common enough.

kevinterkelsen 03-19-2009 02:04 PM

Yeah, I had 225/40/18's on 8.5" Hartge rims - standard setup - no problems what so ever! a 255 will also fit on the rim (255/35/18 was my setup in the back), but just go ahead. I also had the same off-set and no problems with rubbing what so ever - just find a shop where they have more sense!

Nate2046 03-19-2009 02:22 PM

I've been running a 225/40/18 on my 9.0" rears all winter. Don't go to a dealer just take it to a tire store.

sunydude 03-19-2009 02:27 PM

+1 my 18x8.5 OZ were running with 225/40/R18 tires all around in winter mode

jdog0411 03-19-2009 03:07 PM

I've got 225/40/18's on 8 inch rims in the front and they fit the rim perfectly. I'm sure a 8.5 would not be a problem though.

mkodama 03-19-2009 03:15 PM

I've got 235's on 8.5" rims, plenty of extra room.

If you want verification, you can often go to the tire manufacturer's website, and they provide a range of wheel widths for the tire you want to intall.

Chris-TK 03-19-2009 03:18 PM

For sure. Slight stretch, but will work great.

sprintman 03-19-2009 03:18 PM

For once the dealer is correct. OEM 18 x 8.5" came with 255/35 18 tyres from BMW. You should have at least purchased 235/40 18, can you trade them back?

http://www.carbibles.com/tyre_bible.html

Chris-TK 03-19-2009 03:26 PM

Quote:

Originally Posted by sprintman (Post 9616949)
For once the dealer is correct. OEM 18 x 8.5" came with 255/35 18 tyres from BMW. You should have at least purchased 235/40 18, can you trade them back?

http://www.carbibles.com/tyre_bible.html

That's for a staggered rear. 18x8.5 square should run either 225 or 235

ZHPEE 03-19-2009 03:43 PM

just goto a tire shop.... get them mounted elsewhere. The dealer is just going by the book, they hate going outside the realm or possibility.....they always play it safe. Atlease the ones here do. If other guys are running 225 on the 18x8.5, and they've had no trouble......then obviously it can work. Just go somewhere else.

Len013091 03-19-2009 04:16 PM

I have 225/40/18 on my front 8.5" CSLs

VMRWheels 03-19-2009 05:16 PM

Quote:

Originally Posted by ChrisTKHarris (Post 9616948)
For sure. Slight stretch, but will work great.

Yup! or a 235/40/18 per a square fit.

-Charles@VMRWheels
www.vmrwheels.com


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