Puma row crops right or wrong

[Elliott]

Case Puma 230 cvx row crops. How do I know if the rolling radius is correct?

I’m fairly sure they will be right but want to be certain!
I’ve asked the dealer but the are taking a while to get back to me.
380/90r46
380/85r30

thanks!

 

[e3120]

Here's the first principles way. Mark both front and rear tyres. Drive a distance on soft ground in 4wd and count the number of revolutions of front and rears. Repeat on hard ground in 2wd. Divide the 2 numbers in each case. Answers should be within 5% of each other.

Other methods are available.

 

[Nearly]