Overinflation - Is there a tire mileage penalty?
Is there any penalty to be paid in the total miles traveled on a tire that has been overinflated all its life? With the vehicle weight on a smaller patch, do they still get 30-60k miles?
Sure, the MPG driver isn't going to do much tire squealing, but surely it would affect the life span, wouldn't it? |
I've been running mine at max sidewall for over a year now and my tires still look barely warn
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I'd think that as long as the over inflation isn't causing abnormal wear, then there is no mileage-of-tire penalty.
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Mr Incredible -
I think the tire sellers will tell you that the center of the tire wears out more quickly. This was true before steel-belted tires came along. Today, the steel belt won't allow the tire to deform. I think other people on this site have gotten 80K miles on their overinflated tires without any problems. I like this website for learning about tires : The wheel and tyre Bible https://www.carbibles.com/tyre_bible.html Quote:
New shoes (aka tires) https://www.gassavers.org/showthread.php?t=3699 I am running these at max tire pressure of 51 PSI. I know I could easily go to 60, but it's bumpy enough as it is. CarloSW2 |
Perhaps I'm not saying what I'm thinking...(as my wife always says)...
Over the years I've put many different size tires on many different sized rims...car/truck/motorcycle. The key to getting total wear out of those tires was to find the sweet spot pressure for that combination. I've seen many tires wear out on the edges faster (pressure too low) and others wear out in the middle first (pressure too high). But I've never put in high pressure for extended spans. You can easily see now on my tires where the edges of the tread have no contact with the road. Thus, obviously, the tires are wearing in the middle rather than all the way across in a uniform fashion. Tires that are highly inflated will deform less, thus creating less heat and frictional losses. But they will wear in the middle first, garonteed. Is this tradeoff equal? Or is there a penalty I'm not thinking of? |
^^^ what size/brand/psi are you running now? IIRC something in a 175/60/13 correct?
If the tires are in fact wearing out the center of the tread more so than the outer tread, then you might try lowing psi just until the outer tread is touching the ground. This way, due to cornering weight forces, your tires should wear more evenly. I think I got the gist of what you were thinking now. |
Interesting. I need to put more air in my F-150 tires to get better mpgs out of that beast.
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TomO, thanks for your thinking on this. And thanks to you all.
I currently am using 175/70/13s. Front/rear is 40/38 psi. I would think that any tire would wear evenly across the tread at PSI-X. Anything more or less would make it wear at the center or at the edges. I would think that every single tire of every single forum member that overinflates their tires here would wear not evenly across the tread, but more in the middle. It is the nature of the beast of overinflation. At least, that is how all the tires I've ever had until now have worn, and I fully expect that out of these. Has anyone here been highly over inflating long enough to see this happen, and did you get reasonable mileage out of your tires? |
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Personally, I've put ~23K miles on over inflated tires.... No abnormal tread wear. Given the wear rate thus far, I have no intentions of replacing my current tires early on account of tread wear :thumbup: I'm inflating 55/50 (front/rear) cold. Quote:
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For those of us driving older cars who have problems trying to find the narrower tires that were the OEM tire sizes for these car, overinflation is a way to reduce that overwide tire's footprint down to the size of the OEM tire's footprint. If they wear out faster in the center, that's fine, since that worn area is close to the width of the OEM tire's tread.
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