Wheel and Tire Fitment calculator

[morbidgorilla]

found this SUPER USEFULL tool for modifying the wheel and tire size to other than OEM
http://www.rimsntires.com/specs.jsp

Have fun!!

[morbidgorilla]

theres also this Oldie but goodie I've used for a long time
http://www.miata.net/garage/tirecalc.html

[Robk0000]

no list of subies under the list. thats because they figured almost all subaru owners know somehting about their own cars.

[RCKSTR]

found this SUPER USEFULL tool for modifying the wheel and tire size to other than OEM
http://www.rims-n-tires.com/info_specs.jsp?text2=Sample%202:%20Honda%20Civic%2 0wheel&sw2=185&ar2=65&bd2=15&rd2=15&rw2=6&et2=35&text1=Sample%201:%20Hummer%20H2%20wheel&sw1=315&ar1=70&bd1=17&rd1=17&rw1=8.0&et1=10

Have fun!!

nice find, thats really cool:)

[kgj996]

Cool, thanks!

[Instanced]

http://www.legacygt.com/forums/showthread.php?t=4426
For all you legacy owners... might be some info about other subi's though :)
Edit: Just saw that this same info was stickied... Somewhere in that post I made an excel file that will calculate overall diameter of a tire... so you punch in your oem, and then start changing the numbers to try and get close to the same size... it was pretty neat... no one appreciated it but w/e, I enjoyed making it.

[SubyChick88]

the first link says internal server error

[I8UR911]

great find.....very usefull!

[Bu11dogg2]

Stuck!

[SubyChick88]

But now the real question is can anyone give me a calculator or tell me how to calculate if my speedometer will affected by choosing a different tire size? Or what dimensions will affect your miles per hour by how much? STi's run 225/45/17's and RS body styles run 215/45/16's so I put 215/45/17's on my car and now I feel like my speedo isn't correct. Can anyone tell me if it is likely that it is off? I have a 99 RS with a full STi swap, so I have the gauges and ECU which are programed for an STi in the RS body style so I'm not sure what speed I'm really going!

[GC4-RS]

so the RS's can run 215/45 or 205/55 ?

[axis]

found this SUPER USEFULL tool for modifying the wheel and tire size to other than OEM
http://www.rims-n-tires.com/info_specs.jsp?text2=Sample%202:%20Honda%20Civic%2 0wheel&sw2=185&ar2=65&bd2=15&rd2=15&rw2=6&et2=35&text1=Sample%201:%20Hummer%20H2%20wheel&sw1=315&ar1=70&bd1=17&rd1=17&rw1=8.0&et1=10

Have fun!!

Says internal server error.:(

[Bu11dogg2]

werked fine fer me

[etaks99rs]

Says internal server error.:(

Ditto. and it was bookmarked. I've used it so many times. :unamused:

[HamSocks]

Doesn't work for me either.

[SubyChick88]

I'm not impressed. With the website that is. Why would you take away such a sweet tool????

[etaks99rs]

It works again!

[Pulski]

But now the real question is can anyone give me a calculator or tell me how to calculate if my speedometer will affected by choosing a different tire size? Or what dimensions will affect your miles per hour by how much? STi's run 225/45/17's and RS body styles run 215/45/16's so I put 215/45/17's on my car and now I feel like my speedo isn't correct. Can anyone tell me if it is likely that it is off? I have a 99 RS with a full STi swap, so I have the gauges and ECU which are programed for an STi in the RS body style so I'm not sure what speed I'm really going!

The Miata.net link will tell you EXACTLY how much of a change there will be to your speedo. ;)

(Yes I realize this is an old post)

[jonny-rockets]

also,

regarding offsets - here is some info i found on nasioc. did a lot of reading wrt offsets & rim width. i was thinking +- 10mm would be no big deal at first, but after reading a few horror stories im sold on these numbers.

tl;dr - use this as an offset fitment guide if you want your wheel bearings to last. just because the wheels fit doesn't mean they are the right wheels.

they are all +- 3mm

6.5" ....... +53 to +55
7.0" ....... +50 to +53
7.5" ....... +47 to +50
8.0" ....... +43 to +47

[Bu11dogg2]

link won't load for me :(

[AExiOn]

If there is a need, i started a thread on another subaru club site

COPY PASTA!!!

http://www.1010tires.com/TireSizeCalculator.asp?action=submit <-- site is down for maintancence, should be up by 4:30 (as stated on thier front page)



hopefully... then I wont look like a dumbass lol

[Bu11dogg2]

I fixed the link