Tire Pressure – Follow The Car’s Manual Or Discount Tire’s Recommendation?

The car’s handbook and also the label in the door jamb both say 29 psi, whereas Discount Tire says “no, it really should be 35 psi”.
Who should I listen to?
(The tire is almost exactly the OEM size – 235/75/15 rather than 225/75/15 – so I don’t think that’s the issue.)

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7 Responses to “Tire Pressure – Follow The Car’s Manual Or Discount Tire’s Recommendation?”

  1. schoolbus gal says:

    Discount tire.

  2. twindrag says:

    that’s all speculation that is what they recommend. try different pressures do not go over the side wall max pressure and you will be able to tell what your car likes either for fuel economy or handling

  3. Ron says:

    I would definitely follow the tire dealer. Remember the big lawsuit between Ford and Firestone. Lot of overturned SUV’S. Ford wanted the pressure low to give a better ride. Firestone wanted it higher for safety.

  4. Humveete says:

    You got to be kidding me at the other moron’s post!!!!! @RON, first off, have you ever driven a big SUV & had a blowout?? It wouldnt matter what tires were on it & the pressure was at. They still will roll due to the driver over correcting & jerking the steering wheel. They are having the same issue with other SUV’s rolling over & it isnt from the tires. From the people yanking the steering wheel & causing it to flip
    Since when did the discount tire store know anything, they only push tires, a monkey could do their job if you can get them to stop throwing crap at the customers.
    You go by the tire placard on your car or in your manual. If it says 29 PSI, you go with 29psi.
    So if GM/Ford or what your car brand is, it says in the owners manual to put in 5 quarts of oil but Jiffy Lube or some other hole in the wall oil change joint says, no. You should put in 9 quarts to help it out. Who are you gong to go with?? The people that actually MADE YOUR CAR or some idiot working at a discount oil change/tire store???
    You go with your owners manual!!!!
    That Firestone/Ford crap to be honest was niether their fault. The blame was on the driver of the vehicle just like the Toyota & the out of control racing of the engine which was also the driver’s fault. Increasing the tire pressure does nothing for your MPG but it will lower the life of your tires if you over inflate them. Since I am 100% ASE, GM & Subaru certified technician, I’m pretty sure I know a little bit more than those other clowns that post nonsense that they pulled out of their butts

  5. Anonymous says:

    Do you want comfort or fuel mileage? The more pressure in the tire the stiffer the ride and better mileage. The less air in the tire the softer the ride and lower fuel mileage. It is up to you.

  6. Michael S says:

    Who knows exactly how your car handles.
    Answer: The car manufacturer not the high school drop-out working at Discount tire. The only difference you have with the tires is the ones you are using are 10mm wider.

  7. Shane A says:

    First of all, Discount tire couldn’t, or wouldn’t sell you the correct size of tire for your car, for what ever reason. That is the first clue that they don’t know what they are doing. The second clue that they don’t know, is they are telling you something totally different than the manufacture. Go with who designed your car, not some idiot trying to make money selling you stuff.

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