The tire difference isn't a problem for those you've chosen.
Where you're going to have a possible concern regardless of tire size is when cornering with 4x4 engaged, when traction happens to be better than "poor". The torque wind-up in the drivetrain will get as high as it needs to be to force the tires to slip, so as to accommodate the different turning radius of the front wheels vs. the rears. You'll notice it when it happens... hear it and feel it. At least, I did.
Some of our GMT400s had selectable "on demand" 4x4 as well as "locked" 4x4; the former engaged under conditions of wheel slip (presumably as a function of the ABS wheel speed sensors). It effectively eliminates torque wind-up in good traction conditions.
I've got this feature on my Suburban but rarely (once) used it.
I'll run "locked" 4x4 under traction conditions that will allow the tires to slip easily during cornering, i.e., gravel, loose dirt / farm field, snow,... not on clear, hard surfaced roads.
Where you're going to have a possible concern regardless of tire size is when cornering with 4x4 engaged, when traction happens to be better than "poor". The torque wind-up in the drivetrain will get as high as it needs to be to force the tires to slip, so as to accommodate the different turning radius of the front wheels vs. the rears. You'll notice it when it happens... hear it and feel it. At least, I did.
Axle Wind Up – A Potentially Damaging Phenomenon
With the rainy season upon us in force – I expect a lot of people with off-road vehicles have been selecting their 4wd. Especially those who live on the outskirts of Kampala and upcountry wh…
pitstop.oncourse4wd.com
Some of our GMT400s had selectable "on demand" 4x4 as well as "locked" 4x4; the former engaged under conditions of wheel slip (presumably as a function of the ABS wheel speed sensors). It effectively eliminates torque wind-up in good traction conditions.
I've got this feature on my Suburban but rarely (once) used it.
I'll run "locked" 4x4 under traction conditions that will allow the tires to slip easily during cornering, i.e., gravel, loose dirt / farm field, snow,... not on clear, hard surfaced roads.
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