How stupid is this? Tires..

["Royal,Paul" <royal@bos.msmail.idx.com>]

Hi Folks,

 Here's the problem....

 The '90 90Q20v I'm driving has a bent rim which contributed to "bad"   
tire wear on the inside edge of  1 tire particularly.....as you know,   
this couldn't be stopped even with proper rotation.  The tire became   
dangerously worn a short time ago and I DO endeavor to have this rim   
fixed with my next set of tires (I purchased the car knowing about the   
rim..and the tires are still the ones that came with it (Pirelli 600s)).

 In order to drive on the Pirelli's for another month or two before going   
to snows I put on a used Goodyear GA of the exact same size (well, I   
hope).
All tires are indeed now 195/60 14s but I'm wondering if even a very   
slight difference in tire sizing will put undue strain or the center   
diff.  I was thinking no, since a person could drive with different rates   
of infaltion on same make tires and get a similar result (NO?).

 Question: Is this right thinking..or am I being a cheap
     bastard and ruining my center diff on the way home
   tonight?

Thanks,

 Paul Royal
 90 90Q20v
 87 5Ks (Pronounced Junk)
 67 SS/RS 350 Camaro (Capri Cream, Power Slide, Loaded, Slow)
 90 Suzuki VX800 (Wear a Helmet)

 "IS THAT A RUINED TORSEN IN YOUR POCKET OR ARE
 YOU JUST HAPPY TO SEE ME?"