Why do my 31 inch tires measure 29 inches.
#1
Join Date: Feb 2006
Location: Dyersburg, TN
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Why do my 31 inch tires measure 29 inches.
Alright so I was bored and I decided to measure how much room 33's will take up in the wheel well so after that I measured my tires from top to bottom and they are only 29inches and they are 31's so is this just because they arent fully inflated and have the trucks weight on them? This may be a stupid question.
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#11
Originally Posted by Mr. Special
^ I run my tires at 50PSI for gas milage and then air down when i go off-roading... on a 65psi max tire whats the problem with 50?
#14
#15
Originally Posted by Trigger01
The MFR rating is for the stock tires, not our after market tires that require more.
#17
well the contact loss is obvious, but at an 11" wide tire thats not much (especially on the street). Plus the fact that 360 days of the year the roads are bone dry here, traction isnt a problem. I just run them at 50 to get the best MPG i can, since all my driving is the 240mile trip from home to school, and the occasional errand run up here.
#18
Originally Posted by anthony84_2004
It shouldnt make a difference might be a couple of psi dif, but u don't wanna run 50. I have seen it happen too many times at work, people want us to warranty tires for problems like this because they thought they were supposed to run what it says on the tire,
Originally Posted by anthony84_2004
Keep an eye on the center part of the tire it will start wearing quicker, best thing is to use the mfr ratings in the door panel.
I also think that if the tire place wont honor the warranty for tires that were inflated according to the tire manufacturer then I think Id get my shoes else where. Sounds like some BS scam.
#20
Originally Posted by anthony84_2004
Max psi!! my tire says 60psi on it but im not gonna run that, my moms f-150 says 80 but not gonna run that either > any body else wanna back me up on this.
#21
Originally Posted by anthony84_2004
Max psi!! my tire says 60psi on it but im not gonna run that, my moms f-150 says 80 but not gonna run that either > any body else wanna back me up on this.
#22
Originally Posted by Mr. Special
yes maxing out your tire's PSI is retarded, but we are saying that on a Max 65psi, 50 is ok for good weather conditions. If i lived somewhere where it rained/snowed i would likely be running 45psi. And when off-roading i am down to 40 (12 at Pismo)
#25
Join Date: Oct 2004
Location: Coal Region, MTC to be exact...heart of the coal region.
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Originally Posted by Kanoeking
So then what would your tire shop say if I brought in a tire that says MAX PSI 65 and I told them that I was running at my vehicles manufacturers reccomended 35psi? They would probably look at it and say WTF mate! What the duece is wrong with you!
wanna know the best way to get good contact patch? mark 6" of ur tire on the tread with chalk and fill up to a desired PSI. then move the truck so the chalk leaves a mrk on ground and u can see how the contact patch is...adjust is nesseccary...