Wheel Offset Calculator

InvisiBill

InvisiBill

Active member
http://syclone.invisibill.net/tirecalc.html has some general tire calculators that are useful as well. There are cross section width, section height, overall height, and revs/mile calculators, as well as the Java applet from the old SyTy.org that lets you compare overall height and revs/mile on two different tire sizes.
 
S

SY480

www.gothamracing.com
A helpful post I found while searching the forum:

Use these two links and make sure you stay below 1% difference f/b.
You should be fine then.

http://www.miata.net/garage/tirecalc.html
http://www.1010tires.com/tiresizecalculator.asp

These are the proven SyTy combos:

245/45R17 - 275/40R17 - 315/35R17 (Vette Style)
245/40R18 - 275/35 R18 or 285/35 R18
235/35R19 - 275/30R19 (also possible 245/35R19 - 285/30R19)
245/30R20 - 295/25R20 (av. only in Europe / alt. for US 255/30R20 Pirellis on all 4 wheels)
Stay away from all the 255/35R20 combos!

225/55 R16 for winter tires - way better handling

You can interchange all of them f. ex.:
245/45R17 in front and 275/35R18 in the back
or even 295/25R20 in the back...
 
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InvisiBill

InvisiBill

Active member
This comes up a lot so...

The offset on the front wheels is 41mm and the rear is 13mm. That means you need a 28mm (1.1") spacer in the rear to make them even with the front. If you have any 4 of the same wheel, you need 28mm spacers in the rear to make them even.
 
T

t-top

New member
Re: Wheel Offset Calculator

whats up everybody new guy here, my name is antonio, just wanted to ask if i can run 255/50/16 rear and 245/50/16 on the front? also im using gta rims and the front rim sticks out a lil more than the stock ty rim, and yes i have front on front and rear on rear. i have all four with 255/50/16 rite now, thanks.
 
Syclone#2960

Syclone#2960

What ever it takes!!
Re: Wheel Offset Calculator

t-top said:
whats up everybody new guy here, my name is antonio, just wanted to ask if i can run 255/50/16 rear and 245/50/16 on the front? also im using gta rims and the front rim sticks out a lil more than the stock ty rim, and yes i have front on front and rear on rear. i have all four with 255/50/16 rite now, thanks.
Click to expand...


Use this formula to determine the size diffreance bewtween the two.

http://www.miata.net/garage/tirecalc.html

the tire sizes are very close...
 
T

t-top

New member
Re: Wheel Offset Calculator

thanks for the info and web site Syclone#2960, very helpful. and yes they are very close. wow!
 
T

t-top

New member
Re: Wheel Offset Calculator

whats up everybody i just got a set of 20 x 8 1/2" and 20 x 10'' rims, thinking about putting this tire size 275/35/20 all around. i checked with the tire calculator and it seems to look ok but wondering if anybody has tried it on a typhoon. any info will help thanks......
 
88GTZ

88GTZ

Donating Member
Re: Wheel Offset Calculator

I'm looking at getting some ZO6 rims, 54mm offset just wondering if anyone else is running this. I'm thinking abt getting a 1.25 spacer for the rear. 17x9.5 all the way around.
 
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