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Tire & Wheel Forum
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Old 09-13-2013, 07:25 AM   #1
badger84
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Arrow Tire-Size-Calculator.info | Compare tires and wheels + graphical demonstration

Hello Forum!

I want to introduce you to my newly released tire size calculator:

www.tire-size-calculator.info

You can compare your existing and future tires and / or wheels of your vehicle. You also get a nice graphical demonstration of how the tires and / or wheels look like in comparison.

You can calculate values such as circumference, speedometer difference, changes relevant to the ride height or the effect of wheel spacers and learn which tires or wheels fit best for your car.

I hope the tire size calculator can help you with your calculations and helps you in deciding on which tires and / or wheels to choose!

Would be nice if you have any suggestions or requests how to make the tire size calculator even more better.

Greetings Mike!



PS: Admins or mods are welcome to make this thread sticky to help also new members of the forum who could need this tire size calculator._a_

Last edited by Solidjake; 09-27-2013 at 09:48 AM. Reason: Auto-save 1380289705
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Old 09-27-2013, 09:48 AM   #2
Solidjake
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Wow, very very useful man and it shows clearly what the differences would be. Stickied.
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Old 04-14-2014, 05:57 PM   #3
timshady
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Holy ****. Where has this been all my life. Thank you, very helpful!
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Old 07-29-2014, 03:59 AM   #4
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This is great. Thank you for sharing it.



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Old 08-24-2015, 03:50 PM   #5
Azrojan
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This is very cool. Can save $$$ by going with a slightly taller tire 205/50 vs current 225/45. hardly a difference. Thanks for the info!
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Old 12-08-2015, 10:13 PM   #6
tonysalib
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Nice tool. Just a question though, why doesn't the "Outset difference per side" change when you change the new tyre width?

I.e these 265 wide tyres are showing the same "Outset difference per side" value as those 235 wide ones (with all other figures being the same).

Does it only work out the difference between the 2 "rim faces", as opposed to entire package including the tyre? If so, it would be a nice addition to have a figure that does take the tyre width into consideration, so you can see the real difference with respect to your guards

Cheers.

Last edited by tonysalib; 12-08-2015 at 10:15 PM.
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Old 12-09-2015, 12:13 AM   #7
Geo31
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Quote:
Originally Posted by tonysalib View Post
Nice tool. Just a question though, why doesn't the "Outset difference per side" change when you change the new tyre width?

I.e these 265 wide tyres are showing the same "Outset difference per side" value as those 235 wide ones (with all other figures being the same).

Does it only work out the difference between the 2 "rim faces", as opposed to entire package including the tyre? If so, it would be a nice addition to have a figure that does take the tyre width into consideration, so you can see the real difference with respect to your guards

Cheers.
I'd have to sit down with Excel (not happening tonight) to verify, but it appears on the surface your assumption is correct (inset/outset) is for the wheel.

The problem with getting accurate tire info is that all tires are different and any calculation would be purely theoretical. YMMV
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Old 12-09-2015, 12:47 AM   #8
tonysalib
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Have a look at this tool (http://www.rimsntires.com/specspro.jsp) it does seem to take into consideration tyre width, so may help you as a guide.
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Old 02-10-2016, 03:15 PM   #9
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Old 05-09-2016, 12:31 AM   #10
hadzray
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hi guys thanks for the script.
BTW im planning to downsize my rims from 18 inch to 15 or 16 inch due to the really, really bad roads of malaysia.

is this possible? whats the minimum size of rims for 2004 e46 325i sports package?
Refer the image below

Thanks,
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Old 07-22-2016, 07:45 PM   #11
ralf
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For a 325 I think you can go to 16 inch, no less.

The 320 came from factory with 16 inch wheels.

For a 330 you cannot have less than 17 because of the larger calipers and brake discs.

Quote:
Originally Posted by hadzray View Post
hi guys thanks for the script.
BTW im planning to downsize my rims from 18 inch to 15 or 16 inch due to the really, really bad roads of malaysia.

is this possible? whats the minimum size of rims for 2004 e46 325i sports package?
Refer the image below

Thanks,
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Old 07-23-2016, 09:42 AM   #12
TerraPhantm
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*Some* 16 inch wheels fit the 330i. I used to run 16 inch winter wheels on my old ZHP with ASA JH3s

Also very nice website! Can you add an option see metric units in English?
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Last edited by TerraPhantm; 07-23-2016 at 09:47 AM.
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Old 07-29-2016, 01:21 PM   #13
RegularGuy
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Well, here goes nothing! I picked up a pristine set of 2012 335Ci (conv) ///M 18" wheels from a friend for next to nothing (Not M3 mind you, just ///M badged wheels). Let's see if they fit my 2001 325Ci (coupe). By the info gathered from numerous wheel manufactures that is also supported by your wonderful calculator, they should fit with room to spare (admittedly not much though). Special attention was given to the backspacing of individual wheel packages that were available on each year/model where I found there is overlap. If they don't, I'll have a set of pristine ///M badged wheels from a 2012 335Ci with brand new Michelin Pilot Sports for sale

Thank you for the calculator!!!
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Old 11-24-2016, 11:48 AM   #14
such00
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16" wheels on 330i

TerraPhanthm, you mention some 16" will fit a 330i I have a set 16" style 282 off a 2009 328xi. Trying to determine if they will fi my 2003 330i
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Old 07-15-2018, 12:31 PM   #15
Cordtus
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Damn this is the best tool I have seen for this purpose. Most of them are nowhere near as well laid out and none of them will do all of these measurements at once!
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