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Maintenance & Repair Hybrid Vehicle Maintenance, Repair and Concerns
133 messages, Last post on Nov 16, 2009 at 3:58 PM
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My 08 Civic Hybrid with 35K miles has burned through the OEM Dunlop tires averaging just over 50mpg (calculated using overflow fill-ups). Mileage was increasing with tire wear--the last 4K miles on them averaged just over 53mpg. I have replaced with the Dunlops with an 80K mi.Yokohama tire running at a little higher pressure and my mileage has gone in the tank--averaging 46mpg over first thousand miles. Is it these tires, new tires, or can someone offer some other arcane explanation? dber |
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Yes. I replaced the stock dunlops with costco michelin x radials, my mpg dropped from 40~ to 32~ overnight. With 3000 miles break in I have no improvement running 32psi, then 40psi. Run the dunlops |
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Replying to: dber (Apr 08, 2009 9:20 am) Watch after 5000 miles.
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Replying to: kdhspyder (Apr 08, 2009 3:09 pm) I would expect that loss to be permanent. If the replacements are less efficient, then I would fully expect the drop to be permanent. By less efficient, I mean in terms of rolling resistance. I have seen estimates of from 2%, up to 25% of total fuel economy. That indeed seems like a very wide varience. |
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Replying to: kdhspyder (Apr 08, 2009 3:09 pm) I have now over 5000 miles on my costco michelin x radials. MPG when pulling in to replace tires, average 40-43mpg, straight highway driving at 60-65mph 43 constant, one trip to san diego from los angeles doing 60mph was 58mpg, 118 miles traveled about 2 gallons of gas. The next tank 30mpg, now 4 months later over 5000 miles at 32mpg~. On a 3000 lbs car the actual tire losing less than an ounce or two of weight has no scientific or practical reasoning to gain back 10mpg. The costco michelins saved me about $150 over the dunlops. Each tank of gas with the michelins is costing me $8 more, In 4 months I have allready lost my savings on the cheaper tire, and used up non-reusable natural resources. The stock dunlops rock! If I wasn't so broke I would go to americas tire and get the 4 stock dunlops.
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Replying to: xkmail1 (Apr 10, 2009 10:13 am) But live and learn. I guess you could switch back to original tires to prove or disprove the theory. |
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Replying to: george128 (Mar 13, 2009 5:54 pm) The gas shuts off on the Insight only when it comes to a complete stop or when you're rolling downhill. That is the difference b/t a mild hybrid (Insight) and a full hybrid (Prius).
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Replying to: galileo5 (Apr 12, 2009 5:06 am) A cost-saving design. |
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http://www.seattleweekly.com/2009-04-22/news/the-flip-side-of-the-perfect-prius/- 4 Stories from other Prius owners involving unintended acceleration are fairly common, Isn't this a fine Audi-do...? Any one have have personal experiences?
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Replying to: lokki (Apr 27, 2009 8:55 am) But I can't accept that people cannot stop the car by slamming on the brakes. For this to happen would require the simultaneous failure of 2 or 3 systems on the car which are not directly connected to each other. This part doesn't add up. You will note that in the "reporter's story" he did in fact stop the car with the brakes and didn't hit anything. Even that story was kind of fishy, because he depicts himself casually pointing out to the salesman that the car is accelerating on its own. Maybe he's that cool under fire, I don't know. Right now I'm thinking that yes, the cars might have a sticking throttle issue but that the driver's are stomping on the wrong pedal while in panic mode (which I myself might do--it's not a "fault" for the driver to do this). |
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