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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Technical Forums > Wheels and Tires Forum Sponsored by The Tire Rack > Bought Wheels...Tire Size Debate?



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Wheel offset calculator courtesy of BimmerPost.com. You may use this calculator to calculate what tire sizes you might need if you upgrade your tires, or what wheel sizes/offsets are compatible with your car.
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         New Wheel Width  inches                  New Wheel Offset  mm.
 
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ORIGINAL TIRES
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NEW TIRES
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Based on your stock wheel setup, your new wheel will have:
Original Tires Diameter (in.)
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  Difference in diameter (in.)
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      11-09-2013, 03:43 PM   #1
surf2727
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Bought Wheels...Tire Size Debate?

Hey, so I just bought a set of wheels for my car and looking to buy some tires now, however, so far I've heard two different recommendations on the best sizes. Anyone have any experience with this setup or similar that can offer some guidance? Right now I have the OEM 189s and OEM tires on the car.

Car:
2010 335i E90 LCI (Sport Package)

Wheels:
Avant Garde M359
Front: 18" x 8.5" et35
Rear: 18" 9.5" et33

Tire Recommendations So Far:
Front: 235/40/18
Rear: 265/35/18

OR

Front: 225/40/18
Rear: 255/35/18
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      11-09-2013, 06:04 PM   #2
floydarogers
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The bottom (225/40 Front, 255/35 Rear) is the OEM size. The other sizes are slightly over-size.
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      11-09-2013, 06:34 PM   #3
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      11-09-2013, 08:06 PM   #4
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you can even fit 245 and 275 thats what i have... but most people go with the 235/265 setup when getting new tires.
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      11-11-2013, 09:27 AM   #5
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Thanks for the feedback. I was just a little concerned that the 255 might be a little stretched in the rear, but several vendors sell packages with this size tire on these exact wheels.
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      11-11-2013, 09:39 AM   #6
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225/40/18 on 8.5 rim / will that be OK or stretched also?...
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      11-11-2013, 09:41 AM   #7
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225/40/18 on 8.5 rim / will that be OK or stretched also?...
same scenario I believe
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      11-11-2013, 11:00 AM   #8
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Quote:
Originally Posted by abhishriv View Post
you can even fit 245 and 275 thats what i have... but most people go with the 235/265 setup when getting new tires.

245/40 or 245/35? Do you have any pictures?
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      11-11-2013, 11:10 AM   #9
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Quote:
Originally Posted by surf2727 View Post
Hey, so I just bought a set of wheels for my car and looking to buy some tires now, however, so far I've heard two different recommendations on the best sizes. Anyone have any experience with this setup or similar that can offer some guidance? Right now I have the OEM 189s and OEM tires on the car.

Car:
2010 335i E90 LCI (Sport Package)

Wheels:
Avant Garde M359
Front: 18" x 8.5" et35
Rear: 18" 9.5" et33

Tire Recommendations So Far:
Front: 235/40/18
Rear: 265/35/18

OR

Front: 225/40/18
Rear: 255/35/18
You should be okay with a Front: 235/40/18 Rear: 265/35/18. Have you checked out the AG M310s? They make a better offset rear for your E90 LCI.
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      11-11-2013, 01:09 PM   #10
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Quote:
Originally Posted by Nitrous Garage View Post
You should be okay with a Front: 235/40/18 Rear: 265/35/18. Have you checked out the AG M310s? They make a better offset rear for your E90 LCI.
I've already purchased the M359s so I'm just looking for the best tire fitment and I know one company's tire may actually not be the same size as another's even though they state the same dimensions. Would running the 265s in the back with 225s up front not be a great idea? Haven't really seen anyone do that so I'm assuming there's a reason for it.
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      11-11-2013, 01:33 PM   #11
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Quote:
Originally Posted by surf2727 View Post
I've already purchased the M359s so I'm just looking for the best tire fitment and I know one company's tire may actually not be the same size as another's even though they state the same dimensions. Would running the 265s in the back with 225s up front not be a great idea? Haven't really seen anyone do that so I'm assuming there's a reason for it.
There is just no reason to go that staggered. A 235/40 and 265/35 should be fine. You might have to roll your fenders though. If you don't want to go that aggressive stick to a 255/35 in the rear

Yes some tires run wide and some narrow.
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      11-11-2013, 03:09 PM   #12
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235/265 is perfect.

245/40/18 and 275/35/18 would also work, but there is a small chance that you'll rub in the rear.
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      11-15-2013, 11:22 PM   #13
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Quote:
Originally Posted by cbecker33 View Post
245/40 or 245/35? Do you have any pictures?
oh shoot.. i missed that you are running 18" wheels.. im running 19s so i have 245/35/19 and 275/30/19
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      11-15-2013, 11:38 PM   #14
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Plug in stock size and proposed size in this calculator to see all the dimensional differences between the two sizes, to include the effect on the speedometer. It's a great tool!

http://www.tacomaworld.com/forum/tirecalc.php
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      11-15-2013, 11:53 PM   #15
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great link!
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      11-24-2013, 06:42 AM   #16
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feedback on 225 tyre on 8.5 rim - fits fine.
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