Ipoffsets are in MM, btw.
You're also missing absolute values before poke or shock interference. These are what I use but they are "arrived at" numbers and may not be precise. They also don't account for tire bulge and intended for wheel lip positioning.
Assume 19" wheels
(inch) outer inner
S550 F 4.0-2 7.1-2
S550 R ? 8
I converted mm to inches for offset. These are wheels the manufacturers say will fit with appropriate tires installed so I didn’t consider poke or shock interference for this. This was done only for my own considerations, guess I should have stated that.offsets are in MM, btw.
You're also missing absolute values before poke or shock interference. These are what I use but they are "arrived at" numbers and may not be precise. They also don't account for tire bulge and intended for wheel lip positioning.
Assume 19" wheels
(inch) outer inner
S550 F 4.0-2 7.1-2
S550 R ? 8
Not much, really. I was looking at some after market wheels and was using it to compare with my OEM PP wheels. I am also using it to calculate the effect of using some spacers.Not sure what the spreadsheet exactly offers. So far, I have been happy with this online tire calc for most of my needs :https://www.tire-size-calculator.info/
It can also take into account the use of spacers.