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49 thoughts on “Stop over inflating your tires!”
  1. Avataaar/Circle Created with python_avatars Michael Fallis says:

    I strongly disagree with this policy. Let me cite the Ford explorer issue of 20 years ago. The rated air pressure on the door is 26 psi. Ford did this to give it a smoother ride. Trouble was running on under inflated tires caused a lot of rollovers. Wears out the shoulders of the tires. And lowers MPG. I have a 2001 explorer and I run my tires at 34 psi. I have no stability problems, the ride is comfortable and I get a couple of more mpg's than running at 26 psi. Plus a longer tire life.

  2. Avataaar/Circle Created with python_avatars FMChimera says:

    EXCEPT! That inflation tag is for stock tires of the time period of the car. The older the car, or the more radical the custom tire, the less relevant is the factory tire pressure spec. That 'stang, for instance, isn't close to stock and is probably around 20 years old. The data tag has zero relevance to the shoes it is currently running. On older vehicles, or non-stock packages, the tire maker is the source because their tires are designed for certain pressure ranges. I mean, really, imagine running 24psi in your modern low-profile radial…

  3. Avataaar/Circle Created with python_avatars David Homen says:

    My jeep doesn't have a sticker in it. Should I go by the tire?

  4. Avataaar/Circle Created with python_avatars BV 86 says:

    My Charger lists 30 psi but I typically keep 32 in them. Every single time I get it back from an oil change or tire service I have to adjust the pressure because they always fill them to 36-38 psi cold and sometimes I've seen up to 42. This last time I complained to the tire shop and he said they set them 2-3 psi higher for our altitude, so I asked him to explain the math to me when the car lists 30 pounds and they inflated to 38. Too many morons in the service industry.

  5. Avataaar/Circle Created with python_avatars Rocky Denney says:

    ok… my stock FJ's 16s say 35.(door panel) My 295/70/17 terra grapplers call for 55 cold. I run about 42 empty because thats where the tread rides correctly. So as much as I really like your show, I'm calling bull$#!t on the door stickers. Ive had to scratch out the door pressure and add an "ask me". Because 35psi is enough to kill someone when you hit a rut on underinflated tires.

  6. Avataaar/Circle Created with python_avatars Nathan Stretch says:

    The other thing to do is, assuming you're not using the OEM tires for your car, check the treadwear after you've been running them for a season or so. If it's more worn in the middle than on the edges, it's over-inflated and could go down a couple PSI, and vice-versa. Start with the pressures on the door, but different tires sometimes like slightly different pressures, so this helps you fine-tune.

  7. Avataaar/Circle Created with python_avatars Bob Dyar says:

    Had a customer who could not understand why the light stayed on after he filled the front tires. Both rears were 10psi UNDER while both fronts were at 90psi.

  8. Avataaar/Circle Created with python_avatars John Craig says:

    uh, no, not when I have 10 ply tires on my truck and need 80 psi to tow my trailer., the door says 35 psi, and Walmart put 35 psi in brand new 10 ply tires, I did not check and when I hit the higghway thhe triler wobbled.

  9. Avataaar/Circle Created with python_avatars Justin Ferguson says:

    That’s interesting I didn’t know that. I have always heard to run max tire pressure due to less rolling resistance and better fuel economy and to prevent uneven tire wear keep them rotated

  10. Avataaar/Circle Created with python_avatars Dustin Taylor says:

    50 psi on a stang which has a tendency to do a dance and crash when leaving car shows explains alot.

  11. Avataaar/Circle Created with python_avatars Mike Mchaney says:

    This only works if you have the stock tires that the vehicle comes with. It even says what size the tire is on the sticker. If the tires have been changed from factory, then the sticker is useless. And the majority of vehicles on the road have aftermarket tires on them after 60,000 miles. The best option is to call the tire manufacturer of the tire that is on the vehicle and they will give you their recommended specs. The sticker is not always the best option for the vehicle as proven by ford, firestone and the explorer roll overs and blow outs. Ford called for 32 psi, and the tire was not rated to go that low on that weight of a vehicle which caused major blow outs and roll overs. Also to note that if you go to an e rated tire on a 3/4 ton truck in the off road sizes, they will not allow a max tire pressure over 65 psi and those trucks sticker says 80 for the rear. So the sticker needs to be changed to match the tire that is installed.

  12. Avataaar/Circle Created with python_avatars My Nintendo Gaming Feed says:

    PSI specs at the door is child's play. Our 2017 Hyundai Tucson had a new set of tires installed, and thanks to Michigan's climate (we feel all 4 weather seasons), the tire pressure varies. For our safety's sake, if I had to inflate our tires, I'd be giving all 4 tires and our Spare tire the maximum 40.0 PSI in it, or put in Nitrogen for the tires.

  13. Avataaar/Circle Created with python_avatars Davos Kazooga says:

    1. Everything that "First Last" said in his comment. That said: what do you expect from people in a country that hands out driver's licences for 25 bucks and not thousands of dollars with many months of training? the door sticker, at least on older cars, shows an outdated value…you usually go 0,2bar above that (whatever that is in psi)…of course, depending on road condition……slippery roads etc… and you SHOULD put more pressure in it when you load your car to the limits, whether that's luggage or people….as important as not overinflating is not to underinflate which might be a little more dangerous due the overheating and instability of the tire and handling (we disregard the fuel waste for a minute and focus on a possible tire burst). Then, people should also be aware / get educated on how to read the production date of a tire….and the recommendation period for a tire change even if the thread is still very good (it actually is 6-7 years even if the tire might last another 10 years not parked in the sun all day)….smooth surface on a long drive with higher pressure, great for fuel consumption unless it wears out the middle part of your surface significantly more than towards the sides…that would make it more costly in the long run (because new tires needed)…lowered stiff suspension and bad streets with too hard tires, not good. underinflated tires for driving or just sitting parked , not good and potentially damaging which you often can't see from the outside of a tire. One more thing: don't pressure- wash your tires from a close distance. It can destroy the fibre of the side wall on the inside, you will not necessarily see it anything on the outside….

  14. Avataaar/Circle Created with python_avatars marks411war says:

    Rainman Ray — Great videos and content except for this one .. Sorry bud – but – Wrong , and your gonna get somebody hurt with that advice . Seriously !! . Door stickers are only for that specific factory size. Changing it to something else will require different air pressure and im betting you already know this… I have 3 vehicles with aftermarket wheels and tires… The best rule of thumb I have discovered over the years to get the best tire wear comfort combo is to read the max tire inflation and on cars back it down (COOL TIRE TEMP ) 1/2 lb for every ten the tire calls for and 1 lb for every 10 on light duty truck .. This will vary obviously from tire to tire and one vehicle and the next and needs refining but this is the basis to start with NOT the door sticker numbers unless you are running factory wheels and tires or some very close to what came on the car … Think about that Ray.. Otherwise good job on the videos.. Nice work

  15. Avataaar/Circle Created with python_avatars Fred says:

    I use to work with a guy that would do the same thing you said not to. I told him the same thing he would never listen to me. Use to piss me off to no end. Once a week I had to deflate the tires so glad i don't work with that dumbass anymore.

  16. Avataaar/Circle Created with python_avatars moneytruth org says:

    My car has the tire inflation card inside the diesel hatch flap, with different pressures for occupancy and load. But I learned that those pressures (32 front and back for me) were too low and were wearing my tires around the outsides. I was throwing them away with deep, new looking tread around the middle. I run them now at 42 front and 38 back to keep them flat on the road – a pretty big difference. They also seem to keep their pressure better there.

  17. Avataaar/Circle Created with python_avatars Jon Biloff says:

    The amount of time I have run into over inflated tires is mind boggling and scary at that.

  18. Avataaar/Circle Created with python_avatars SEKAF says:

    Learn something new everyday. Hmmmm

  19. Avataaar/Circle Created with python_avatars I Cant Snipe says:

    Had a guy come in yesterday because he thought his tires were low….sticker called for 36 psi, he had 50psi+ in all of them.

  20. Avataaar/Circle Created with python_avatars Katana says:

    Idiots at oil change fill tires without looking at PSI

  21. Avataaar/Circle Created with python_avatars Beast from the East says:

    Lol, I made that mistake when I was a teenager.

  22. Avataaar/Circle Created with python_avatars NiiMRoD BeatZ says:

    Too many numbers!!! I’ll just wait til it explodes 💀😭🥴

  23. Avataaar/Circle Created with python_avatars John Urbanek says:

    Don't stress too much on that number either. Not only will the pressure change a little with temperature, but tire gauges themselves will vary a couple degrees here and there. Ballpark is just fine. I've had customers complain because their dash says the tire pressures are off by a couple degrees, then show them my pneumatic gauge that shows they're dead on because that's what I used, then get an old school spring loaded gauge to show them it's also off by a couple PSI and try to explain to them how real life works. lol

  24. Avataaar/Circle Created with python_avatars Mikey says:

    Running higher psi than what is on the door sticker is perfectly valid, Toyota Prius front tires are a perfect example of requiring higher psi than what the door sticker says.

  25. Avataaar/Circle Created with python_avatars Jani Koskimies says:

    @Rainman Ray's Repairs how about this; your car door says " for tires that are 205/50/17 you should have 2,3bar" <– but you actually have "275/30/19" tires on you, therefore you dont know what your car wants the tire pressure to be, right? So my question is: do you just wing it?

  26. Avataaar/Circle Created with python_avatars NeXuS says:

    I've been doing the same always because I thought that the pressure rate is for that tire specifically and what is on the sticker in the car is only for the original tires it came with so if I put on any other new tire I should follow what the tire says because that pressure is for that tire and thus that tire will perform at it's best with the pressure written on it.
    I guess then no matter what tire I put on, I should always follow the car's pressure guide.

  27. Avataaar/Circle Created with python_avatars Throne Walker says:

    I feel sorry for the folks that don’t know this information.

  28. Avataaar/Circle Created with python_avatars Ross W says:

    I usually go about 6 or 8 under because my cars don’t have door tags

  29. Avataaar/Circle Created with python_avatars Abraham Awad says:

    The guiltiest offenders are tire shops. I can’t tell you how many cars we get with new tires that are severely over inflated.

    Saddest part is most drivers don’t even notice.

  30. Avataaar/Circle Created with python_avatars jorge fernandez says:

    Thanks for this lesson. The pressure on the tire also says Max Pressure cold. The tire can take more pressure than the car maker wants you to put in. This is in case you are fully loaded and the tire needs more air. When you drive, it also heats up and the pressure goes up as well. So do as our man Ray says and look at the placard on the door to properly inflate your tire. Over inflate and then hit a large pothole and you will be buying a new tire and maybe rim.

  31. Avataaar/Circle Created with python_avatars TotheSoundOfThunderingEngine says:

    Not to mention if you put in the max according to the tire the second that tire gets hot your over.

  32. Avataaar/Circle Created with python_avatars Austin Harmon says:

    Don't forget that is also for when the tire is under its maximum load capacity.

  33. Avataaar/Circle Created with python_avatars shoreline armor llc says:

    I kept em around 80 on my 2500hd cuz I thought they towed better 65 changed my life.

  34. Avataaar/Circle Created with python_avatars Forever Computing says:

    I was doing a spare wheel change for a work colleague and got my tools and torque wrench. When checking the pressure on the donut, I saw it was about 28, so I inflated to 50.

    An observer suggest it should be higher because that's what the tyre says. I had to explain what you did.

    They did learn that impacts are not for running in wheel bolts while I used mine to quickly run them down. Followed by a final torquing by going round in sequence, then in order about 3 times.

    The lads asked me how I know the torque setting. I have a friend who has a similar vehicle and uses the same torque rating as my own car 110 newton metres.

    Whomever did those wheels before I got there was a bloody ape! They were tight! My battery ugga duggs were ugging and dugging a while.

  35. Avataaar/Circle Created with python_avatars Aiak is back says:

    the tire says max pressure. its not the "optimal pressure for your tire" more like when you put more in you are going to visit god soon

  36. Avataaar/Circle Created with python_avatars sledgenwedge says:

    Even though I disagree with your summation on this still give you a video alike. Tires are expensive I would inflate them where you can get the most out of them as far as gas prices because thanks to certain policies that's going up also

  37. Avataaar/Circle Created with python_avatars sledgenwedge says:

    Yeah that would be absolutely big hell no 5lb under maximum pressure is where the tire should be inflated anywhere else is wrong. Y 5 lb under? Because you must leave room for heat expansion. If the tires maximum pressure is 51 the actual pressure should be 46 at 35 PSI that tire will be pushing not rolling and you'll be wasting all sorts of gas and putting more stress on the vehicle than necessary.

  38. Avataaar/Circle Created with python_avatars Mike Fatty says:

    Ray you always find the best topics to start a comment war! you are the king of the trolls. they just don't realize it yet. it's fascinating how many people start bashing their keyboards and light up the comments so quickly on your videos. I pop the popcorn and just watch the keyboard warriors fight.

  39. Avataaar/Circle Created with python_avatars Henri D. aka RKD says:

    Had an elderly Asian man who barely spoke English come into the Jiffy Lube I was working at wanting his tires pumped up on his Corolla.
    They were all dangerously overfilled, but he was worried they were low based off of how they looked. One tire was over 100psi, one was around 90, the others were in the 70s. I was surprised they hadn't exploded from over pressure. Thankfully, I set his tires to the manufacturer set PSI, explained that it might look low but is fine, and sent him on his way.
    Our Jiffy Lube was known for fixing problems other Jiffy Lubes caused. We did the right job and we did our best not to be that one shop who scams customers.

  40. Avataaar/Circle Created with python_avatars N.B says:

    This comment section is terrifying

  41. Avataaar/Circle Created with python_avatars EpicMelons says:

    Anytime I go to a tire shop for a tire leak they always inflate way over the recommended amount and I have to release some air when I get home. Like come is it that hard to check a sticker

  42. Avataaar/Circle Created with python_avatars Jonathan Rees says:

    Check with a tyre expert. Manufacturer recommended tyre pressure is always a compromise. Chewed up tyres at recommended pressure driving winding hills roads (as a commute). Tyre shop told me to use higher pressure – and told me what to run – doubled tyre life and worked better – and improved safety. Never run at tyre max pressure – this is just a safety/construction pressure.

  43. Avataaar/Circle Created with python_avatars Bruce Carbon Lakeriver says:

    I don't get the ignorance of many ppl about their cars… yes the tire has a MAX preassure rating for a reason. But it doesn't (not even remotely) mean to be the target preassure. This is common sense logic. WTF are you learning in the driving schools :S

  44. Avataaar/Circle Created with python_avatars John Rees says:

    I am NOT going to run my 80 lb tires at 44 lbs Ray. NOT doing it.

  45. Avataaar/Circle Created with python_avatars Matt D says:

    Ok, so, one thing that I've never figured out – and maybe someone can explain it. I've literally never gotten an answer to anybody that I've asked over the years (though, I'm sure someone knows). This is my understanding – it's going to be a little choppy, try to bare with me lol.

    One scenario: tires have weight and speed ratings. If I'm using a tire with a higher load rating than the vehicle specifies aren't I under-inflating if I go by the door?
    That said, how the heck can a tire manufacturer design a contact patch that heavily depends upon the weight of the load and pressure of the tire be expected to meet optimal specifications universally at a pressure determined by the auto manufacturer when there's a 99% chance that the tires used during the handling tests to determine tire pressure aren't the same ones being installed?

    I get that if a tire is over or under-inflated it will wear unevenly and in a decipherable pattern that one could determine the reason for the uneven wear. I had a van awhile back that handled noticeably better at 40psi than 35psi. I don't recall ever going beyond that on purpose, but anyway.

    If someone can explain to me why it makes perfect sense from an engineering standpoint to use a number completely unaffiliated with the tire manufacturer, I'm all ears. Thanks!

  46. Avataaar/Circle Created with python_avatars L T says:

    I like your videos but I think this video should be more specific. If you are using the factory rims and tires then yes you should be good with the door tag info. But I’m going to be dramatic here just as an example. Say you have two F250 super duty’s and one truck has 22” rims with low profile tires on it and the other truck has 15” rims with 37” mud tires. I’m pretty sure those two trucks aren’t going to be using the same exact tire pressure that is based on the door tag. If it were me I would go by the tire manufacturers recommendations before assuming the tire pressure recommended by the auto maker can be used as a blanket pressure to cover all wheel and tire combinations that might end up being installed on that vehicle.