Found this pic of a 235 tire on 8" torque.
I guarantee that no 235 tire on the planet is supposed to be stretched like that on an 8 wheel. Looks more like a 205.
Here is what a 235 is supposed
to look like (and in 99% of cases, will
look like) on an 8" rim. Perfect fit, not stretched, just enough sidewall bulge so you won't curb your wheel, but plenty of sidewall support.