what tire size for big car

what tire size guys with 22's running on a heavey car? i have a 265/35/22 tire. just curious if anyones running smaller and feels comfortable doing it.

I would not run anything smaller. A friend of mine, as well as many others running rubber bands on thier wheels have found out that running such a small tire is bad news... i've seen many broken wheels online and my friend here broke 2 of his, 1 from a nail splitting and the other from a large sharp rock.
Not to mention all the others that have bent or crushed the lips from a lack of sidewall protection.

P275/55R20