Tire Pressure? We don’t need no stinking tire pressure

Just a quick note here. Long time ago I, like many of us have always stuck to the general tire manufacturer’s inflation recommendation. Typically for a 13 inch tire they’ll say anywhere’s from 28 to 32 psi, correct? That’s based on a car weighing in at around 2,000 pounds. Believe it or not, if you’re running a modern tire of just about any size on a Spridget, you actually want to be running about 18-20 psi cold on the side-curtain cars, and 20-22 psi on the roll-up window cars since they weigh a bit more. Aside from riding more smoothly at the lower pressure, you most likely find it to be less “darty” over bumps and will stick to the road so much better. Give it a try, if you don’t agree with the results, the worst-case scenario is that you’ll have that painstaking task of putting air back into the tires! Also, if you’re really adventurous, try setting your toe-in at zero instead of the BMC called for 1/16″ toe-in. I’d love to hear from any and all of you about your findings if you try it. I might even post views telling me I’m full of horse-hockey, too!

About Tom Colby

Gearhead.
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5 Responses to Tire Pressure? We don’t need no stinking tire pressure

  1. Joel Young says:

    I was reluctant to try this, especially with the ‘battle zone’ pavement conditions in New Mexico. However, emboldened by the razor-like tracking yielded by my Speedwell tapered wheel bearing kit, I reduced the pressure in my 165/70 R13 radials to 22 psi and headed up the ramp onto I-40. There is a rain-grooved stretch that used to yank my ’67 Midget around like a politician facing a runoff election. As it approached, I notched it up to 70 mph, took my hands off the wheel, and… Shazam! Tom’s right! Drifting around the on-ramps is a little less skittish, too. Whaddya know!

  2. Ron says:

    well I am running 13″ x 8.5 wide tred @ 32 PSI and just had a spin out taking a left turn on slightly wet city street.
    I travel this road regularly. I will take your suggestion of 22PSI and will let you know what happens @ this same turn at a similar speed and condition.

    • Ron says:

      WEll I dropped my tire pressure to 22 p.s.i. and travelled the same road on yet another rainy day here in CAL. winter seems to have grabbed a hold on what is supposed to be spring. Car felt much smoother over bumps and railroad tracks. I was a bit hesitent at the turn where I had previously spun out, but the car held its own. thanks for the sugustion. I was supprised to notice that the tire walls bulged only slightly wider and the tred did not cup as I expected it to.
      Thanks again Ron

  3. Pingback: Tyre Pressure | Sprite Club of South Australia

  4. Tom Colby says:

    NO ONE yet has commented to the contrary yet. Try low pressure. It truly does solve many evil problems!

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