As long as they are approximately the same size (i.e have the same numbers
on the side) and he doesn't engage 4x4 on a hard surface, I can't see there
being a problem.

Dave Milne, Scotland
'91 Grand Wagoneer, '99 TJ

"Serg" > wrote in message
...
> hey guys-so my cousin runs over a wheel/tire that some jackass drops on
the
> freeway. going about 80 mph, he hits it and flattens both left side
tires.
> got towed to Pep boys (closest place) and gets told he need to change all
4
> tires because he has a 4wd car and only changing 2 could damage his
> drivetrain. what do u think about this?
>
> i say BS. shouldn't the differentials handle the slightly different tire
> sizes ok (new vs old) and in the snow, the tire slipping on the snow would
> take care of that too right? he's in colorado (boulder) so snow is a
> concern.
>
> they are trying to sell him a pep boy-brand tire or something else that
> costs a whole lot more ($95 pepboy tire vs $150 other brand (can't
remember
> which). no, they don't carry bfg's
>
> thanks!
>
>