[Christ]

the 3% difference is negligible... The speedo and such are only that accurate to begin with... (+/- 3-5% nominally, some are even worse.)

You should start running the 13's and sell the 14's... tires sell better when they're close to new. Also, if you plan on getting good cheap tires for the 13's, you should probably find a good source of used ones that are still in good condition. They're entirely too expensive new, and you can usually get great condition used ones from salvage yards for a few bucks a tire... I pay $10 for any size tire I want, if they have it.

By buying used tires, I also feel that I'm "helping out" as it were... the more used tires I "finish up", the less "OK to use" tires end up in land fills being chopped up for rubber filler material.