Here are some tools that are handy, I figured I would sticky them so they will be handy.

Offsets calculator
http://www.1010tires.com/WheelOffsetCalculator.asp

http://www.gtsparkplugs.com/WheelOffsetCalc.html
This one has some basic information that explains what offset means and how it is measured

Tire size calculator
http://www.miata.net/garage/tirecalc.html
This is good for making sure your tire specs are similar to oem so that your vdc does not go crazy.

Tire stretch
http://www.tyrestretch.com/index.php
good visual examples of what size tire vs what size rim (note different brands will stretch differently)

Rimtuck
http://www.rimtuck.com/
Examples of fitment with all specs of wheels and tires.

 

Awesome! Thanks

 

http://www.wheelsmaster.com/rt_specs.jsp

 

Same calculator as above, on a different web site - just in case their service is down.

http://www.rims-n-tires.com/rt_specs.jsp

 

thats the same calculator as the one i posted before you .. lol..

i like it alot ..

 

Amazing information!

 

i was told by a tire place that if i go 285/30/19 in the rear of my 2006 coupe, it'll ruin my traction control...they also said the recommended was 275/35/19 or 285/35/19....285/30/19 seems the ideal size for me, but supposedly its not recommended......any help???

 

subscribed

 

I have VS-XXs that are 18x9 offset +38 for 2008 g sedan. I wanna put 255 / 45 - R18. I wanna know how that would look.

 

good info

 

Depends on your front tire, if you run a 245/35 with your 285/30 then you're fine, but if you do 245/30 then you won't be within the 3% difference in tire dimameter, this will cause an issue with the VDC. Find a new tire shop, they're idiots.

That will be fine, but I suggest a different tire size, 255 is not only rare, but ghey.

265/40 is what I would run you could also stagger if you'd like and do a 245/35 in the front. You can stagger tires even if the wheels aren't staggered.

You might actually feel you need spacers once the wheels are on the car, maybe 5 or 10mm just to get a little closer to the fender.

 

how would a 18x8.5 +30 with a 235/40/18
18x9.5 +25 with a 265/35/18 look on my 05 awd sedan..the tire sizes should be fine to not mess up my awd..but would i need spacers to make it more flush??

 

If anyone wants an offset calculator on the go I use "Wheel Matching" by Maverick Software for the iPhone. Its a free app and I just started using it because the offset calculator I was using on the web (http://marksink.com/cgi-sys/suspendedpage.cgi) is no longer being hosted online.

 

Don't want to bump a thread that is too too old but this is a nice wheel offset calculator that I've been using for a while now. It shows a visual of the wheels. My only gripe is that it doesn't have widths larger than 10".

http://www.motormann.no/felg/

 

www.WillTheyFit.com