STICKY: Offset and tire/rim charts (Somebody check my math)

[badass3000]

This thread is to give guidelines for rim and tire fitment.
It aint the Bible!! As read in this link the numbers on tires and rims are NOT exact measurments.

Meaurements taken from first gen TT front

[badass3000]

These charts will show what tires I have calculated to fit on what size rims
borrowed from The Tirerack.



*I need to change these illistrations cus I thought an 8" wide rim actualy was 8" wide, instead of 8" + 2lips

[badass3000]

and these charts will show what I have calculated to fit a 3S's suspention with a max overall tire height of 675mm..

[Alan92RTTT]

Please add this to the 3S Wiki(link upper left of page)

[badass3000]

Actualy Alan, I am finding new flaws in my logic every hour it seems.
I wanted to hear from others first before I posed this as truth.
example, I have 225/35 tires stretched over my 8.5" (216mm) wide rims.
Why are 225mm wide tires thinner than 8.5" (216mm) rims?
Isnt 225>216?

[Alan92RTTT]

Thats fine, if you could post the final version to the wiki that would be great.

[badass3000]

Sure, no problem, once its all sorted out we should get a "Sticky" so people wont have to create new threads about rim/tire fitments.

[*GT]

Originally Posted by badass3000

Actualy Alan, I am finding new flaws in my logic every hour it seems.
I wanted to hear from others first before I posed this as truth.
example, I have 225/35 tires stretched over my 8.5" (216mm) wide rims.
Why are 225mm wide tires thinner than 8.5" (216mm) rims?
Isnt 225>216?

Probably because there is a surprising amount of variation in actual treadwidth on rated tire width. For example a firestone "275" is nearly 2" narrower than say a "275" ES 100, or a kuhmo MX. It would also be helpful to include what offset is ecessary to clear the strut. Most of the tire/wheel sizes listed would not clear the struts anyway, it should be easy enough to make another table listing what offsets will clear the struts.