Originally Posted by Bouchbri25
how do I know what to inflate my tires to if there's no chart? I bought Roadlux R216 225/70 19.5 last year and I checked the pressure today with a digital tire gauge at roughly 70-72.5 PSI (45 on passenger inside rear wheel and driver front at 82.5). I know I should weight it etc. to get the correct pressures but even if I do, I can't find a chart. I assumed the tire dealer inflated them correctly when they were installed but now that they're so far off from each other I'm not sure where to even begin.
The max load is 95PSI but what should I inflate to if no chart?
Can I get it weighed at my town transfer station? if not, can I get it weighed at a highway truck weigh station or are the troopers there just gonna look at me funny?
What you know from those readings even without a published chart from Sampson is that you have run the passenger inside dual "flat" for an unknown number of miles because you 1. Do not have a TPMS and 2 Have failed to check your air each travel day.
There is a good probability that that tire may fail prematurely. It should be inspected (dismounted and internal inspection included) and the dealer should issue a written statement that tthe tire shows no signs of damage. That is still no guarantee as most damage that cause tire failures is done to the internal structure which can only be reviewed with X-Ray or other specialized inspection
I included links in THIS
post showing the special inspections being done.
Depending on where you live or travel you can get the side to side loads by using a worksheet from THIS
site using the platform weights. CAT scales may have guard rail that prevents one side weights. Here is a post
on getting weights for FREE.
You should check pressure with a gauge the morning of each travel day (tires at ambient i.e. not driven on or in Sun for two hours). A TPMS
will solve this problem and would have saved you the cost of the flat tire if you had had one.