It would be nice to see all this info made up in a spreadsheet, rather than having to read every post, or trying to remember where we saw a particular tire and measurements. I understand your logic in over inflating a bit but my BFG KM3's have a max pressure of 44lbs so i don't think that thought would apply to many of the utv tires. however our little 110-186 hp units probably aren't capable of stretching the tires like that. On a vehicle needing slicks those have enough power to stretch the tires like that when doing the burnouts. I am not sure if your experience with drag slicks would be the same here, but i could be wrong. I agree, that even though there are many variables listing this info is beneficial for those looking for actual measurements. I liked mine at 18 but I just got them and am trying to play around a bit to see what i like for my use. I think 18psi is a good setting point for many. I am used to a lot of tire flex on trucks, so currently that is not a big concern for me but i can understand where that could matter or be life saving. I went from 16psi or so down to 14psi cold, and I saw an 1/8" decrease in height iirc. Just wondering if storing the darn things are 20-25 PSI might sneak in an extra 1/2". Thinking of you rock crawler guys looking for every 1/4"of an inch (and who can blame you) but also normally running 6-8 psi. The things literally stretched, and held same when aired back down. So sure, there is quite a bit of error to be found here just because we're coming at it from different perspectives and different needs, but I think the information is still useful.īTW, has anybody ever checked their tires over time? In drag tires an old trick was to air them up and let them sit in the heat for a week or so. I believe we're talking over 1/2" (in general) between 10 PSI and 18.
![33 inch tires actual size 33 inch tires actual size](https://cimg3.ibsrv.net/gimg/www.f150forum.com-vbulletin/2000x1504/truck_2_07abecc0a019e492ed909227e4c9d468929b4b36.jpg)
I've also noticed significant tire height difference based on tire pressure. Enough I don't think I had much deflection. Why only 1/4"? I don't rock crawl, and for performance cornering and etc I'm much happier at 18-19 psi. What do I care how tall a tire is with no weight on it? I care how tall it is as I will use it. As I recall I only saw 1/4" difference from sitting on the floor vs jacked up load off the tires.
![33 inch tires actual size 33 inch tires actual size](https://i.pinimg.com/originals/2a/d6/56/2ad65616ee2e7e37192c14e414ab5383.jpg)
![33 inch tires actual size 33 inch tires actual size](https://img1.croooober.com/api/v1/photo/ec/dw=700;dh=;/00000/2310/2310223/2310223007433/2310223007433s1.jpg)
I see the "tire not on the floor" comment here from time to time.