[Reelhavoc]

Can’t mix tire sizes on 4wd vehicles.
even with all 4 the exact same , they are not exactly same from factory
have to set air pressures with a stager guage so the circumference truly match . A 1/4” diff can destroy
Especially anything AWD .
Same thing applies to 2wd on drive axle/transaxle. Different circumference ‘s melt the diff spider gears , burns up limited slip clutches
Using donut spare on AWD is death
Using donut spare on drive axle kills diffs in axle or transaxle

 

[Reelhavoc]

Old farts are the smartest! Young turds got to learn the hard way !

 

[Reelhavoc]

Then you should know better for sure !
Call Rockland standard 0r ATRA or ATSG ask their tech line . Get some education