How accurate is the 1010tires offset calc?

[Adz2332]

Hey all

Has anyone used the 1010tires offset calc?

https://www.1010tires.com/Tools/Wheel-Offset-Calculator#

How accurate are they? 

Im currently trying to work out sizes for a set of rims for my torana. All the old guys use backspace this and backspace that. But im looking at a modern set of work emotion T7R -2P.

Ive test fit my RPF1s on the rear (pics below) they are 10.5 +15. so by using the above calc and my tape measure how accurate would it be? the T7Rs can be made to any offset to which helps and the largest 11.5 width with around a -20 offset could work... if the calc is right

 

cheers

[Hadouken]

Many people use the multitude of offset calculators online.

They are accurate in the sense that they are only doing simple maths with wheel offset and width calculations that you yourself can do to the same degree.

The accuracy of the matter comes when you have to measure guard clearances to see if you can accommodate the wheel. Then we talk caliper clearance, strut clearance, camber, full lock clearance blah blah blah

[Adz2332]

yer this is true. going to be a pain i can tell