185 60 14 tire psi | Ford Escort Owners Association (FEOA)

185 60 14 tire psi

Discussion in 'Wheels/Tires/Brakes' started by gabepanoussi, May 15, 2018.

  1. gabepanoussi

    gabepanoussi FEOA Member

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    I just switched my tires over to 185 60 14 vs the 185 65 14 that are stock for my 97 sedan. My question is since this tire is smaller should i inflate to a higher psi than before say 40 psi. My reasoning is that there is less air space under the vehicle with this smaller tire like a doughnut you know.

    Also, I know my millage will be off and so will my speedometer but how will this affect the tranny. I should be ok since all 4 are the same size right? Here is a neat site https://tiresize.com/comparison/
  2. FordMan59

    FordMan59 FEOA Member

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    Changing the tire size a minimum like you're doing won't hurt a thing. Increasing the tire pressure will stiffen the ride if you do it. If you go to 40 PSI be sure to watch the tires closely for the first few thousand miles. Over inflation can cause the center tread to wear faster than the shoulders. Personally I'd just run them at about 35 PSI and if the sidewall recommended pressure is higher than that you should be fine running them at sidewall recommended pressure. The difference in these tire sizes only makes 3.4% difference in the speedometer/odometer so you'll be showing 103.4 miles for each actual 100 miles driven. This only amounts to an additional 3400 miles each 100,000 miles driven. The speedometer will be showing 3.4% faster than you're actually traveling so if you stay close to the speed limit this is a little extra buffer to help prevent speeding tickets.

    In the past I've ran tires as large as 185/75/14's and as small as 155/70/13's on my '88 Pony that came from the factory with 165/80/13. When I quit driving it it had over 500,000 miles.
  3. gabepanoussi

    gabepanoussi FEOA Member

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    Thanks that puts things in perspective. I thought the change was bigger than I imagined. I can live with a false 3400 a year on the od. Tranny fine so i'm fine. I will play with the psi to see what I like. Sidewall is rated to 50 or 60 psi I think thats max.
  4. madmatt2024

    madmatt2024 FEOA Member

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    A tire load inflation table will tell you what pressure to run them at. Just look up the OE size and pressure, note the carrying capacity it gives for that pressure, look up the new size and find a pressure that closely matches the carrying capacity you noted earlier. If the carrying capacity you need exceeds that maximum carrying capacity of the new tire then its dangerous to use that tire.

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