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Old 12-09-2014, 10:38 AM
A Talent for Obfuscation
Join Date: Feb 2013
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Self-Inflating Tires

This weekend, I took out the tire guage and checked out the tires on three vehicles on which I foot the tire replacement bill. All twelve tires were low, some by as much as 5 PSI. If I had to replace all of these tires tomorrow, the bill would easily be $2,750 - $3,000. The low pressure warning systems were quiet as mice, as apparently the low pressure thresholds were never hit, but surely the lower pressures were impacting tire wear and rolling resistance.

I was reading an article earlier this week about Goodyear fleet-testing an internal system that could be mounted in a tire that would maintain air pressure to the desired level. Seems like a nice companion to TPMS systems, and would probably pay for itself over the life of the vehicle in terms of preventing fuel economy and tire life degradation.

Would you pay a price premium, say $200 per vehicle (my WAG on cost) for such a system?

Goodyear self-inflating tire technology | Official specs, pictures | Digital Trends

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Old 12-09-2014, 11:26 AM
t walgamuth's Avatar
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Location: Lafayette Indiana
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no....course I don't expect to ever own a car with tires that cost 700 ea.
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Old 12-09-2014, 12:49 PM
A Talent for Obfuscation
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Originally Posted by t walgamuth View Post
no....course I don't expect to ever own a car with tires that cost 700 ea.
If you were referring to my numbers, that $2,750 - $3,000 is for 3 cars/12 tires.
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Old 12-09-2014, 12:58 PM
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Nope. But I'd pay for a TPMS with software that reports actual tire pressures on an MFD vs just showing an idiot light.
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Old 12-09-2014, 01:07 PM
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How much at replacement time? Say it is a $200 option but it costs $1000 more than a set of regular tires, probably not. OTOH, if I am doing a fleet thing, it could make sense.
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Old 12-10-2014, 05:37 PM
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CTIS like the MTVR and FMTV have would have been nice when I was transitioning between dirt, mud, and pavement on a frequent basis. Now that almost all of my driving and riding are on pavement, I have no use for such a thing. I can tell when my tire pressures are off just from how the vehicle feels. I also find the manufacturer recommendations for most cars to be way low. For example, my 300D has recommended pressures of 28 front/32 rear. I air up to 40 front 38 rear and get considerably improved handling as a result.

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