Slick size differences?

[Ed Wright]

Did it all the time in my sprint car days. Works on bias tires, doubt it would work with radials. Out in the sun for a few hours with 30 psi will certainly stretch one. Measure it after airing it up, and keep checking. 1/2" is no problem.

[Jeff Lee]

Art,
I had this problem once and M/T offered to replace them free even though they were 1/2 used. Try it. All they can say is no.

[rod]

last summer i bought a pair of Phoenix F/X tires from jegs. i was told they were a matched pair. however when they arrived [and that was one on one day the second on the second day -i had to wonder if that was on purpose] anyway there were, in fact, not matched. when i called jegs, the guy was that was normal and well within what they call matched. it was summer here, so i did the roundy round deal, put the small tire out in the sun. man i did not take long. now the small tire is bigger than the 'big' tire. just by a little, point is if you do that, keep close watch. i have been using a tape and measuring the loaded radius. footprint seems to be only a bit different.
this is a case of becoming smart as you age. i bought my first set in 1967, and i have no idea how many i have bought since. i never ever checked any of those for circumference. point is didn't know, didn't worry. nowadays, you worry about everything and it drives you crazy.
rod in AZ

[Ed Wright]

I found if I stretched one a little too far I could completely deflate it over night, and air it back up to the correct pressure and usually get some of it back.